Merge branch 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking fixes from Thomas Gleixner:
"Two fixes to address shortcomings of the rwsem/percpu-rwsem lock
debugging code which emits false positive warnings when the rwsem is
anonymously locked and unlocked"
* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
locking/percpu-rwsem: Annotate rwsem ownership transfer by setting RWSEM_OWNER_UNKNOWN
locking/rwsem: Add a new RWSEM_ANONYMOUSLY_OWNED flag
diff --git a/Documentation/ABI/testing/sysfs-class-cxl b/Documentation/ABI/testing/sysfs-class-cxl
index 640f65e..8e69345 100644
--- a/Documentation/ABI/testing/sysfs-class-cxl
+++ b/Documentation/ABI/testing/sysfs-class-cxl
@@ -244,3 +244,11 @@
Returns 1 if the psl timebase register is synchronized
with the core timebase register, 0 otherwise.
Users: https://github.com/ibm-capi/libcxl
+
+What: /sys/class/cxl/<card>/tunneled_ops_supported
+Date: May 2018
+Contact: linuxppc-dev@lists.ozlabs.org
+Description: read only
+ Returns 1 if tunneled operations are supported in capi mode,
+ 0 otherwise.
+Users: https://github.com/ibm-capi/libcxl
diff --git a/Documentation/devicetree/bindings/net/marvell-pp2.txt b/Documentation/devicetree/bindings/net/marvell-pp2.txt
index 1814fa1..fc019df 100644
--- a/Documentation/devicetree/bindings/net/marvell-pp2.txt
+++ b/Documentation/devicetree/bindings/net/marvell-pp2.txt
@@ -21,9 +21,10 @@
- main controller clock (for both armada-375-pp2 and armada-7k-pp2)
- GOP clock (for both armada-375-pp2 and armada-7k-pp2)
- MG clock (only for armada-7k-pp2)
+ - MG Core clock (only for armada-7k-pp2)
- AXI clock (only for armada-7k-pp2)
-- clock-names: names of used clocks, must be "pp_clk", "gop_clk", "mg_clk"
- and "axi_clk" (the 2 latter only for armada-7k-pp2).
+- clock-names: names of used clocks, must be "pp_clk", "gop_clk", "mg_clk",
+ "mg_core_clk" and "axi_clk" (the 3 latter only for armada-7k-pp2).
The ethernet ports are represented by subnodes. At least one port is
required.
@@ -80,8 +81,8 @@
compatible = "marvell,armada-7k-pp22";
reg = <0x0 0x100000>, <0x129000 0xb000>;
clocks = <&cpm_syscon0 1 3>, <&cpm_syscon0 1 9>,
- <&cpm_syscon0 1 5>, <&cpm_syscon0 1 18>;
- clock-names = "pp_clk", "gop_clk", "gp_clk", "axi_clk";
+ <&cpm_syscon0 1 5>, <&cpm_syscon0 1 6>, <&cpm_syscon0 1 18>;
+ clock-names = "pp_clk", "gop_clk", "mg_clk", "mg_core_clk", "axi_clk";
eth0: eth0 {
interrupts = <ICU_GRP_NSR 39 IRQ_TYPE_LEVEL_HIGH>,
diff --git a/Documentation/virtual/kvm/cpuid.txt b/Documentation/virtual/kvm/cpuid.txt
index d4f33eb8..ab022dc 100644
--- a/Documentation/virtual/kvm/cpuid.txt
+++ b/Documentation/virtual/kvm/cpuid.txt
@@ -72,8 +72,8 @@
flag || value || meaning
==================================================================================
-KVM_HINTS_DEDICATED || 0 || guest checks this feature bit to
- || || determine if there is vCPU pinning
- || || and there is no vCPU over-commitment,
+KVM_HINTS_REALTIME || 0 || guest checks this feature bit to
+ || || determine that vCPUs are never
+ || || preempted for an unlimited time,
|| || allowing optimizations
----------------------------------------------------------------------------------
diff --git a/MAINTAINERS b/MAINTAINERS
index 58b9861..078fd80 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -4309,7 +4309,7 @@
T: git git://anongit.freedesktop.org/drm/drm-misc
DMA GENERIC OFFLOAD ENGINE SUBSYSTEM
-M: Vinod Koul <vinod.koul@intel.com>
+M: Vinod Koul <vkoul@kernel.org>
L: dmaengine@vger.kernel.org
Q: https://patchwork.kernel.org/project/linux-dmaengine/list/
S: Maintained
@@ -7698,6 +7698,7 @@
M: Shuah Khan <shuah@kernel.org>
L: linux-kselftest@vger.kernel.org
T: git git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest.git
+Q: https://patchwork.kernel.org/project/linux-kselftest/list/
S: Maintained
F: tools/testing/selftests/
F: Documentation/dev-tools/kselftest*
@@ -12220,7 +12221,7 @@
F: include/uapi/linux/vfio_ccw.h
S390 ZCRYPT DRIVER
-M: Harald Freudenberger <freude@de.ibm.com>
+M: Harald Freudenberger <freude@linux.ibm.com>
L: linux-s390@vger.kernel.org
W: http://www.ibm.com/developerworks/linux/linux390/
S: Supported
@@ -13264,6 +13265,12 @@
S: Maintained
F: arch/alpha/kernel/srm_env.c
+ST STM32 I2C/SMBUS DRIVER
+M: Pierre-Yves MORDRET <pierre-yves.mordret@st.com>
+L: linux-i2c@vger.kernel.org
+S: Maintained
+F: drivers/i2c/busses/i2c-stm32*
+
STABLE BRANCH
M: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
L: stable@vger.kernel.org
diff --git a/arch/arm/boot/dts/bcm-cygnus.dtsi b/arch/arm/boot/dts/bcm-cygnus.dtsi
index 699fdf9..9fe4f5a 100644
--- a/arch/arm/boot/dts/bcm-cygnus.dtsi
+++ b/arch/arm/boot/dts/bcm-cygnus.dtsi
@@ -69,7 +69,7 @@
timer@20200 {
compatible = "arm,cortex-a9-global-timer";
reg = <0x20200 0x100>;
- interrupts = <GIC_PPI 11 IRQ_TYPE_LEVEL_HIGH>;
+ interrupts = <GIC_PPI 11 IRQ_TYPE_EDGE_RISING>;
clocks = <&periph_clk>;
};
diff --git a/arch/arm/boot/dts/da850-lcdk.dts b/arch/arm/boot/dts/da850-lcdk.dts
index a1f4d6d..0edf769 100644
--- a/arch/arm/boot/dts/da850-lcdk.dts
+++ b/arch/arm/boot/dts/da850-lcdk.dts
@@ -21,8 +21,8 @@
stdout-path = "serial2:115200n8";
};
- memory {
- device_type = "memory";
+ memory@c0000000 {
+ /* 128 MB DDR2 SDRAM @ 0xc0000000 */
reg = <0xc0000000 0x08000000>;
};
diff --git a/arch/arm/boot/dts/da850.dtsi b/arch/arm/boot/dts/da850.dtsi
index c66cf78..1201000 100644
--- a/arch/arm/boot/dts/da850.dtsi
+++ b/arch/arm/boot/dts/da850.dtsi
@@ -7,10 +7,19 @@
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*/
-#include "skeleton.dtsi"
#include <dt-bindings/interrupt-controller/irq.h>
/ {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ chosen { };
+ aliases { };
+
+ memory@c0000000 {
+ device_type = "memory";
+ reg = <0xc0000000 0x0>;
+ };
+
arm {
#address-cells = <1>;
#size-cells = <1>;
@@ -46,8 +55,6 @@
pmx_core: pinmux@14120 {
compatible = "pinctrl-single";
reg = <0x14120 0x50>;
- #address-cells = <1>;
- #size-cells = <0>;
#pinctrl-cells = <2>;
pinctrl-single,bit-per-mux;
pinctrl-single,register-width = <32>;
diff --git a/arch/arm/boot/dts/dm8148-evm.dts b/arch/arm/boot/dts/dm8148-evm.dts
index d6657b3..85d7b51 100644
--- a/arch/arm/boot/dts/dm8148-evm.dts
+++ b/arch/arm/boot/dts/dm8148-evm.dts
@@ -10,7 +10,7 @@
/ {
model = "DM8148 EVM";
- compatible = "ti,dm8148-evm", "ti,dm8148";
+ compatible = "ti,dm8148-evm", "ti,dm8148", "ti,dm814";
memory@80000000 {
device_type = "memory";
diff --git a/arch/arm/boot/dts/dm8148-t410.dts b/arch/arm/boot/dts/dm8148-t410.dts
index 63883b3..6418f9c 100644
--- a/arch/arm/boot/dts/dm8148-t410.dts
+++ b/arch/arm/boot/dts/dm8148-t410.dts
@@ -9,7 +9,7 @@
/ {
model = "HP t410 Smart Zero Client";
- compatible = "hp,t410", "ti,dm8148";
+ compatible = "hp,t410", "ti,dm8148", "ti,dm814";
memory@80000000 {
device_type = "memory";
diff --git a/arch/arm/boot/dts/dm8168-evm.dts b/arch/arm/boot/dts/dm8168-evm.dts
index c72a213..1d030d5 100644
--- a/arch/arm/boot/dts/dm8168-evm.dts
+++ b/arch/arm/boot/dts/dm8168-evm.dts
@@ -10,7 +10,7 @@
/ {
model = "DM8168 EVM";
- compatible = "ti,dm8168-evm", "ti,dm8168";
+ compatible = "ti,dm8168-evm", "ti,dm8168", "ti,dm816";
memory@80000000 {
device_type = "memory";
diff --git a/arch/arm/boot/dts/dra62x-j5eco-evm.dts b/arch/arm/boot/dts/dra62x-j5eco-evm.dts
index fee0547..31b824a 100644
--- a/arch/arm/boot/dts/dra62x-j5eco-evm.dts
+++ b/arch/arm/boot/dts/dra62x-j5eco-evm.dts
@@ -10,7 +10,7 @@
/ {
model = "DRA62x J5 Eco EVM";
- compatible = "ti,dra62x-j5eco-evm", "ti,dra62x", "ti,dm8148";
+ compatible = "ti,dra62x-j5eco-evm", "ti,dra62x", "ti,dm8148", "ti,dm814";
memory@80000000 {
device_type = "memory";
diff --git a/arch/arm/boot/dts/imx51-zii-rdu1.dts b/arch/arm/boot/dts/imx51-zii-rdu1.dts
index 0c99ac0..6464f25 100644
--- a/arch/arm/boot/dts/imx51-zii-rdu1.dts
+++ b/arch/arm/boot/dts/imx51-zii-rdu1.dts
@@ -523,7 +523,7 @@
};
touchscreen@20 {
- compatible = "syna,rmi4_i2c";
+ compatible = "syna,rmi4-i2c";
reg = <0x20>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_ts>;
@@ -541,8 +541,8 @@
rmi4-f11@11 {
reg = <0x11>;
- touch-inverted-y;
- touch-swapped-x-y;
+ touchscreen-inverted-y;
+ touchscreen-swapped-x-y;
syna,sensor-type = <1>;
};
};
diff --git a/arch/arm/boot/dts/imx7s.dtsi b/arch/arm/boot/dts/imx7s.dtsi
index 4d42335..ce85b3c 100644
--- a/arch/arm/boot/dts/imx7s.dtsi
+++ b/arch/arm/boot/dts/imx7s.dtsi
@@ -868,6 +868,7 @@
crypto: caam@30900000 {
compatible = "fsl,sec-v4.0";
+ fsl,sec-era = <8>;
#address-cells = <1>;
#size-cells = <1>;
reg = <0x30900000 0x40000>;
diff --git a/arch/arm/boot/dts/logicpd-som-lv.dtsi b/arch/arm/boot/dts/logicpd-som-lv.dtsi
index b47cac2..6fa7bba 100644
--- a/arch/arm/boot/dts/logicpd-som-lv.dtsi
+++ b/arch/arm/boot/dts/logicpd-som-lv.dtsi
@@ -26,7 +26,7 @@
gpio = <&gpio1 3 0>; /* gpio_3 */
startup-delay-us = <70000>;
enable-active-high;
- vin-supply = <&vmmc2>;
+ vin-supply = <&vaux3>;
};
/* HS USB Host PHY on PORT 1 */
@@ -82,6 +82,7 @@
twl_audio: audio {
compatible = "ti,twl4030-audio";
codec {
+ ti,hs_extmute_gpio = <&gpio2 25 GPIO_ACTIVE_HIGH>;
};
};
};
@@ -199,6 +200,7 @@
pinctrl-single,pins = <
OMAP3_CORE1_IOPAD(0x21ba, PIN_INPUT | MUX_MODE0) /* i2c1_scl.i2c1_scl */
OMAP3_CORE1_IOPAD(0x21bc, PIN_INPUT | MUX_MODE0) /* i2c1_sda.i2c1_sda */
+ OMAP3_CORE1_IOPAD(0x20ba, PIN_OUTPUT | MUX_MODE4) /* gpmc_ncs6.gpio_57 */
>;
};
};
@@ -213,7 +215,7 @@
};
wl127x_gpio: pinmux_wl127x_gpio_pin {
pinctrl-single,pins = <
- OMAP3_WKUP_IOPAD(0x2a0c, PIN_INPUT | MUX_MODE4) /* sys_boot0.gpio_2 */
+ OMAP3_WKUP_IOPAD(0x2a0a, PIN_INPUT | MUX_MODE4) /* sys_boot0.gpio_2 */
OMAP3_WKUP_IOPAD(0x2a0c, PIN_OUTPUT | MUX_MODE4) /* sys_boot1.gpio_3 */
>;
};
@@ -260,6 +262,11 @@
#include "twl4030.dtsi"
#include "twl4030_omap3.dtsi"
+&vaux3 {
+ regulator-min-microvolt = <2800000>;
+ regulator-max-microvolt = <2800000>;
+};
+
&twl {
twl_power: power {
compatible = "ti,twl4030-power-idle-osc-off", "ti,twl4030-power-idle";
diff --git a/arch/arm/boot/dts/r8a7790-lager.dts b/arch/arm/boot/dts/r8a7790-lager.dts
index 063fdb6..f07f9018 100644
--- a/arch/arm/boot/dts/r8a7790-lager.dts
+++ b/arch/arm/boot/dts/r8a7790-lager.dts
@@ -379,7 +379,7 @@
port@0 {
reg = <0>;
adv7511_in: endpoint {
- remote-endpoint = <&du_out_lvds0>;
+ remote-endpoint = <&lvds0_out>;
};
};
@@ -467,10 +467,8 @@
status = "okay";
clocks = <&cpg CPG_MOD 724>, <&cpg CPG_MOD 723>, <&cpg CPG_MOD 722>,
- <&cpg CPG_MOD 726>, <&cpg CPG_MOD 725>,
<&x13_clk>, <&x2_clk>;
- clock-names = "du.0", "du.1", "du.2", "lvds.0", "lvds.1",
- "dclkin.0", "dclkin.1";
+ clock-names = "du.0", "du.1", "du.2", "dclkin.0", "dclkin.1";
ports {
port@0 {
@@ -478,12 +476,26 @@
remote-endpoint = <&adv7123_in>;
};
};
+ };
+};
+
+&lvds0 {
+ status = "okay";
+
+ ports {
port@1 {
endpoint {
remote-endpoint = <&adv7511_in>;
};
};
- port@2 {
+ };
+};
+
+&lvds1 {
+ status = "okay";
+
+ ports {
+ port@1 {
lvds_connector: endpoint {
};
};
diff --git a/arch/arm/boot/dts/r8a7790.dtsi b/arch/arm/boot/dts/r8a7790.dtsi
index e4367ce..05a0fc2 100644
--- a/arch/arm/boot/dts/r8a7790.dtsi
+++ b/arch/arm/boot/dts/r8a7790.dtsi
@@ -1627,18 +1627,13 @@
du: display@feb00000 {
compatible = "renesas,du-r8a7790";
- reg = <0 0xfeb00000 0 0x70000>,
- <0 0xfeb90000 0 0x1c>,
- <0 0xfeb94000 0 0x1c>;
- reg-names = "du", "lvds.0", "lvds.1";
+ reg = <0 0xfeb00000 0 0x70000>;
interrupts = <GIC_SPI 256 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 268 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 269 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&cpg CPG_MOD 724>, <&cpg CPG_MOD 723>,
- <&cpg CPG_MOD 722>, <&cpg CPG_MOD 726>,
- <&cpg CPG_MOD 725>;
- clock-names = "du.0", "du.1", "du.2", "lvds.0",
- "lvds.1";
+ <&cpg CPG_MOD 722>;
+ clock-names = "du.0", "du.1", "du.2";
status = "disabled";
ports {
@@ -1653,11 +1648,65 @@
port@1 {
reg = <1>;
du_out_lvds0: endpoint {
+ remote-endpoint = <&lvds0_in>;
};
};
port@2 {
reg = <2>;
du_out_lvds1: endpoint {
+ remote-endpoint = <&lvds1_in>;
+ };
+ };
+ };
+ };
+
+ lvds0: lvds@feb90000 {
+ compatible = "renesas,r8a7790-lvds";
+ reg = <0 0xfeb90000 0 0x1c>;
+ clocks = <&cpg CPG_MOD 726>;
+ power-domains = <&sysc R8A7790_PD_ALWAYS_ON>;
+ resets = <&cpg 726>;
+ status = "disabled";
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+ lvds0_in: endpoint {
+ remote-endpoint = <&du_out_lvds0>;
+ };
+ };
+ port@1 {
+ reg = <1>;
+ lvds0_out: endpoint {
+ };
+ };
+ };
+ };
+
+ lvds1: lvds@feb94000 {
+ compatible = "renesas,r8a7790-lvds";
+ reg = <0 0xfeb94000 0 0x1c>;
+ clocks = <&cpg CPG_MOD 725>;
+ power-domains = <&sysc R8A7790_PD_ALWAYS_ON>;
+ resets = <&cpg 725>;
+ status = "disabled";
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+ lvds1_in: endpoint {
+ remote-endpoint = <&du_out_lvds1>;
+ };
+ };
+ port@1 {
+ reg = <1>;
+ lvds1_out: endpoint {
};
};
};
diff --git a/arch/arm/boot/dts/r8a7791-koelsch.dts b/arch/arm/boot/dts/r8a7791-koelsch.dts
index f40321a..9d7213a 100644
--- a/arch/arm/boot/dts/r8a7791-koelsch.dts
+++ b/arch/arm/boot/dts/r8a7791-koelsch.dts
@@ -468,10 +468,9 @@
pinctrl-names = "default";
status = "okay";
- clocks = <&cpg CPG_MOD 724>, <&cpg CPG_MOD 723>, <&cpg CPG_MOD 726>,
+ clocks = <&cpg CPG_MOD 724>, <&cpg CPG_MOD 723>,
<&x13_clk>, <&x2_clk>;
- clock-names = "du.0", "du.1", "lvds.0",
- "dclkin.0", "dclkin.1";
+ clock-names = "du.0", "du.1", "dclkin.0", "dclkin.1";
ports {
port@0 {
@@ -479,6 +478,13 @@
remote-endpoint = <&adv7511_in>;
};
};
+ };
+};
+
+&lvds0 {
+ status = "okay";
+
+ ports {
port@1 {
lvds_connector: endpoint {
};
diff --git a/arch/arm/boot/dts/r8a7791-porter.dts b/arch/arm/boot/dts/r8a7791-porter.dts
index c14e6fe..ae9ed9f 100644
--- a/arch/arm/boot/dts/r8a7791-porter.dts
+++ b/arch/arm/boot/dts/r8a7791-porter.dts
@@ -441,10 +441,9 @@
pinctrl-names = "default";
status = "okay";
- clocks = <&cpg CPG_MOD 724>, <&cpg CPG_MOD 723>, <&cpg CPG_MOD 726>,
+ clocks = <&cpg CPG_MOD 724>, <&cpg CPG_MOD 723>,
<&x3_clk>, <&x16_clk>;
- clock-names = "du.0", "du.1", "lvds.0",
- "dclkin.0", "dclkin.1";
+ clock-names = "du.0", "du.1", "dclkin.0", "dclkin.1";
ports {
port@0 {
@@ -455,6 +454,17 @@
};
};
+&lvds0 {
+ status = "okay";
+
+ ports {
+ port@1 {
+ lvds_connector: endpoint {
+ };
+ };
+ };
+};
+
&rcar_sound {
pinctrl-0 = <&ssi_pins &audio_clk_pins>;
pinctrl-names = "default";
diff --git a/arch/arm/boot/dts/r8a7791.dtsi b/arch/arm/boot/dts/r8a7791.dtsi
index f11dab7..506b208 100644
--- a/arch/arm/boot/dts/r8a7791.dtsi
+++ b/arch/arm/boot/dts/r8a7791.dtsi
@@ -1633,15 +1633,12 @@
du: display@feb00000 {
compatible = "renesas,du-r8a7791";
- reg = <0 0xfeb00000 0 0x40000>,
- <0 0xfeb90000 0 0x1c>;
- reg-names = "du", "lvds.0";
+ reg = <0 0xfeb00000 0 0x40000>;
interrupts = <GIC_SPI 256 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 268 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&cpg CPG_MOD 724>,
- <&cpg CPG_MOD 723>,
- <&cpg CPG_MOD 726>;
- clock-names = "du.0", "du.1", "lvds.0";
+ <&cpg CPG_MOD 723>;
+ clock-names = "du.0", "du.1";
status = "disabled";
ports {
@@ -1656,6 +1653,33 @@
port@1 {
reg = <1>;
du_out_lvds0: endpoint {
+ remote-endpoint = <&lvds0_in>;
+ };
+ };
+ };
+ };
+
+ lvds0: lvds@feb90000 {
+ compatible = "renesas,r8a7791-lvds";
+ reg = <0 0xfeb90000 0 0x1c>;
+ clocks = <&cpg CPG_MOD 726>;
+ power-domains = <&sysc R8A7791_PD_ALWAYS_ON>;
+ resets = <&cpg 726>;
+ status = "disabled";
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+ lvds0_in: endpoint {
+ remote-endpoint = <&du_out_lvds0>;
+ };
+ };
+ port@1 {
+ reg = <1>;
+ lvds0_out: endpoint {
};
};
};
diff --git a/arch/arm/boot/dts/r8a7793-gose.dts b/arch/arm/boot/dts/r8a7793-gose.dts
index 9ed6961..96e117d 100644
--- a/arch/arm/boot/dts/r8a7793-gose.dts
+++ b/arch/arm/boot/dts/r8a7793-gose.dts
@@ -447,10 +447,9 @@
pinctrl-names = "default";
status = "okay";
- clocks = <&cpg CPG_MOD 724>, <&cpg CPG_MOD 723>, <&cpg CPG_MOD 726>,
+ clocks = <&cpg CPG_MOD 724>, <&cpg CPG_MOD 723>,
<&x13_clk>, <&x2_clk>;
- clock-names = "du.0", "du.1", "lvds.0",
- "dclkin.0", "dclkin.1";
+ clock-names = "du.0", "du.1", "dclkin.0", "dclkin.1";
ports {
port@0 {
@@ -458,6 +457,11 @@
remote-endpoint = <&adv7511_in>;
};
};
+ };
+};
+
+&lvds0 {
+ ports {
port@1 {
lvds_connector: endpoint {
};
diff --git a/arch/arm/boot/dts/r8a7793.dtsi b/arch/arm/boot/dts/r8a7793.dtsi
index f9c5a55..4f52603 100644
--- a/arch/arm/boot/dts/r8a7793.dtsi
+++ b/arch/arm/boot/dts/r8a7793.dtsi
@@ -1292,15 +1292,12 @@
du: display@feb00000 {
compatible = "renesas,du-r8a7793";
- reg = <0 0xfeb00000 0 0x40000>,
- <0 0xfeb90000 0 0x1c>;
- reg-names = "du", "lvds.0";
+ reg = <0 0xfeb00000 0 0x40000>;
interrupts = <GIC_SPI 256 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 268 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&cpg CPG_MOD 724>,
- <&cpg CPG_MOD 723>,
- <&cpg CPG_MOD 726>;
- clock-names = "du.0", "du.1", "lvds.0";
+ <&cpg CPG_MOD 723>;
+ clock-names = "du.0", "du.1";
status = "disabled";
ports {
@@ -1315,6 +1312,34 @@
port@1 {
reg = <1>;
du_out_lvds0: endpoint {
+ remote-endpoint = <&lvds0_in>;
+ };
+ };
+ };
+ };
+
+ lvds0: lvds@feb90000 {
+ compatible = "renesas,r8a7793-lvds";
+ reg = <0 0xfeb90000 0 0x1c>;
+ clocks = <&cpg CPG_MOD 726>;
+ power-domains = <&sysc R8A7793_PD_ALWAYS_ON>;
+ resets = <&cpg 726>;
+
+ status = "disabled";
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+ lvds0_in: endpoint {
+ remote-endpoint = <&du_out_lvds0>;
+ };
+ };
+ port@1 {
+ reg = <1>;
+ lvds0_out: endpoint {
};
};
};
diff --git a/arch/arm/boot/dts/tegra20.dtsi b/arch/arm/boot/dts/tegra20.dtsi
index 0a71364..983dd5c 100644
--- a/arch/arm/boot/dts/tegra20.dtsi
+++ b/arch/arm/boot/dts/tegra20.dtsi
@@ -741,7 +741,7 @@
phy_type = "ulpi";
clocks = <&tegra_car TEGRA20_CLK_USB2>,
<&tegra_car TEGRA20_CLK_PLL_U>,
- <&tegra_car TEGRA20_CLK_PLL_P_OUT4>;
+ <&tegra_car TEGRA20_CLK_CDEV2>;
clock-names = "reg", "pll_u", "ulpi-link";
resets = <&tegra_car 58>, <&tegra_car 22>;
reset-names = "usb", "utmi-pads";
diff --git a/arch/arm/include/asm/kvm_mmu.h b/arch/arm/include/asm/kvm_mmu.h
index 707a1f0..f675162 100644
--- a/arch/arm/include/asm/kvm_mmu.h
+++ b/arch/arm/include/asm/kvm_mmu.h
@@ -309,6 +309,22 @@
return 8;
}
+/*
+ * We are not in the kvm->srcu critical section most of the time, so we take
+ * the SRCU read lock here. Since we copy the data from the user page, we
+ * can immediately drop the lock again.
+ */
+static inline int kvm_read_guest_lock(struct kvm *kvm,
+ gpa_t gpa, void *data, unsigned long len)
+{
+ int srcu_idx = srcu_read_lock(&kvm->srcu);
+ int ret = kvm_read_guest(kvm, gpa, data, len);
+
+ srcu_read_unlock(&kvm->srcu, srcu_idx);
+
+ return ret;
+}
+
static inline void *kvm_get_hyp_vector(void)
{
return kvm_ksym_ref(__kvm_hyp_vector);
diff --git a/arch/arm/mach-davinci/board-da830-evm.c b/arch/arm/mach-davinci/board-da830-evm.c
index 004f9c8..d1e8ce7 100644
--- a/arch/arm/mach-davinci/board-da830-evm.c
+++ b/arch/arm/mach-davinci/board-da830-evm.c
@@ -205,12 +205,17 @@
-1
};
+#define DA830_MMCSD_WP_PIN GPIO_TO_PIN(2, 1)
+#define DA830_MMCSD_CD_PIN GPIO_TO_PIN(2, 2)
+
static struct gpiod_lookup_table mmc_gpios_table = {
.dev_id = "da830-mmc.0",
.table = {
/* gpio chip 1 contains gpio range 32-63 */
- GPIO_LOOKUP("davinci_gpio.1", 2, "cd", GPIO_ACTIVE_LOW),
- GPIO_LOOKUP("davinci_gpio.1", 1, "wp", GPIO_ACTIVE_LOW),
+ GPIO_LOOKUP("davinci_gpio.0", DA830_MMCSD_CD_PIN, "cd",
+ GPIO_ACTIVE_LOW),
+ GPIO_LOOKUP("davinci_gpio.0", DA830_MMCSD_WP_PIN, "wp",
+ GPIO_ACTIVE_LOW),
},
};
diff --git a/arch/arm/mach-davinci/board-da850-evm.c b/arch/arm/mach-davinci/board-da850-evm.c
index 3063478..158ed9a 100644
--- a/arch/arm/mach-davinci/board-da850-evm.c
+++ b/arch/arm/mach-davinci/board-da850-evm.c
@@ -763,12 +763,17 @@
-1
};
+#define DA850_MMCSD_CD_PIN GPIO_TO_PIN(4, 0)
+#define DA850_MMCSD_WP_PIN GPIO_TO_PIN(4, 1)
+
static struct gpiod_lookup_table mmc_gpios_table = {
.dev_id = "da830-mmc.0",
.table = {
/* gpio chip 2 contains gpio range 64-95 */
- GPIO_LOOKUP("davinci_gpio.2", 0, "cd", GPIO_ACTIVE_LOW),
- GPIO_LOOKUP("davinci_gpio.2", 1, "wp", GPIO_ACTIVE_LOW),
+ GPIO_LOOKUP("davinci_gpio.0", DA850_MMCSD_CD_PIN, "cd",
+ GPIO_ACTIVE_LOW),
+ GPIO_LOOKUP("davinci_gpio.0", DA850_MMCSD_WP_PIN, "wp",
+ GPIO_ACTIVE_LOW),
},
};
diff --git a/arch/arm/mach-davinci/board-dm355-evm.c b/arch/arm/mach-davinci/board-dm355-evm.c
index cb30637..23ab9e8 100644
--- a/arch/arm/mach-davinci/board-dm355-evm.c
+++ b/arch/arm/mach-davinci/board-dm355-evm.c
@@ -19,6 +19,7 @@
#include <linux/gpio.h>
#include <linux/gpio/machine.h>
#include <linux/clk.h>
+#include <linux/dm9000.h>
#include <linux/videodev2.h>
#include <media/i2c/tvp514x.h>
#include <linux/spi/spi.h>
@@ -109,12 +110,15 @@
},
};
+#define DM355_I2C_SDA_PIN GPIO_TO_PIN(0, 15)
+#define DM355_I2C_SCL_PIN GPIO_TO_PIN(0, 14)
+
static struct gpiod_lookup_table i2c_recovery_gpiod_table = {
- .dev_id = "i2c_davinci",
+ .dev_id = "i2c_davinci.1",
.table = {
- GPIO_LOOKUP("davinci_gpio", 15, "sda",
+ GPIO_LOOKUP("davinci_gpio.0", DM355_I2C_SDA_PIN, "sda",
GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
- GPIO_LOOKUP("davinci_gpio", 14, "scl",
+ GPIO_LOOKUP("davinci_gpio.0", DM355_I2C_SCL_PIN, "scl",
GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
},
};
@@ -179,11 +183,16 @@
},
};
+static struct dm9000_plat_data dm335evm_dm9000_platdata;
+
static struct platform_device dm355evm_dm9000 = {
.name = "dm9000",
.id = -1,
.resource = dm355evm_dm9000_rsrc,
.num_resources = ARRAY_SIZE(dm355evm_dm9000_rsrc),
+ .dev = {
+ .platform_data = &dm335evm_dm9000_platdata,
+ },
};
static struct tvp514x_platform_data tvp5146_pdata = {
diff --git a/arch/arm/mach-davinci/board-dm644x-evm.c b/arch/arm/mach-davinci/board-dm644x-evm.c
index 95b55aa..509e64a 100644
--- a/arch/arm/mach-davinci/board-dm644x-evm.c
+++ b/arch/arm/mach-davinci/board-dm644x-evm.c
@@ -17,6 +17,7 @@
#include <linux/i2c.h>
#include <linux/platform_data/pcf857x.h>
#include <linux/platform_data/at24.h>
+#include <linux/platform_data/gpio-davinci.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/rawnand.h>
#include <linux/mtd/partitions.h>
@@ -596,12 +597,15 @@
},
};
+#define DM644X_I2C_SDA_PIN GPIO_TO_PIN(2, 12)
+#define DM644X_I2C_SCL_PIN GPIO_TO_PIN(2, 11)
+
static struct gpiod_lookup_table i2c_recovery_gpiod_table = {
- .dev_id = "i2c_davinci",
+ .dev_id = "i2c_davinci.1",
.table = {
- GPIO_LOOKUP("davinci_gpio", 44, "sda",
+ GPIO_LOOKUP("davinci_gpio.0", DM644X_I2C_SDA_PIN, "sda",
GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
- GPIO_LOOKUP("davinci_gpio", 43, "scl",
+ GPIO_LOOKUP("davinci_gpio.0", DM644X_I2C_SCL_PIN, "scl",
GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
},
};
diff --git a/arch/arm/mach-davinci/board-dm646x-evm.c b/arch/arm/mach-davinci/board-dm646x-evm.c
index 2d37f5b..a3c0d1e 100644
--- a/arch/arm/mach-davinci/board-dm646x-evm.c
+++ b/arch/arm/mach-davinci/board-dm646x-evm.c
@@ -532,11 +532,12 @@
.set_clock = set_vpif_clock,
.subdevinfo = dm646x_vpif_subdev,
.subdev_count = ARRAY_SIZE(dm646x_vpif_subdev),
+ .i2c_adapter_id = 1,
.chan_config[0] = {
.outputs = dm6467_ch0_outputs,
.output_count = ARRAY_SIZE(dm6467_ch0_outputs),
},
- .card_name = "DM646x EVM",
+ .card_name = "DM646x EVM Video Display",
};
/**
@@ -674,6 +675,7 @@
.setup_input_channel_mode = setup_vpif_input_channel_mode,
.subdev_info = vpif_capture_sdev_info,
.subdev_count = ARRAY_SIZE(vpif_capture_sdev_info),
+ .i2c_adapter_id = 1,
.chan_config[0] = {
.inputs = dm6467_ch0_inputs,
.input_count = ARRAY_SIZE(dm6467_ch0_inputs),
@@ -694,6 +696,7 @@
.fid_pol = 0,
},
},
+ .card_name = "DM646x EVM Video Capture",
};
static void __init evm_init_video(void)
diff --git a/arch/arm/mach-davinci/board-omapl138-hawk.c b/arch/arm/mach-davinci/board-omapl138-hawk.c
index 0d32042..be8b892 100644
--- a/arch/arm/mach-davinci/board-omapl138-hawk.c
+++ b/arch/arm/mach-davinci/board-omapl138-hawk.c
@@ -123,12 +123,16 @@
-1
};
+#define DA850_HAWK_MMCSD_CD_PIN GPIO_TO_PIN(3, 12)
+#define DA850_HAWK_MMCSD_WP_PIN GPIO_TO_PIN(3, 13)
+
static struct gpiod_lookup_table mmc_gpios_table = {
.dev_id = "da830-mmc.0",
.table = {
- /* CD: gpio3_12: gpio60: chip 1 contains gpio range 32-63*/
- GPIO_LOOKUP("davinci_gpio.0", 28, "cd", GPIO_ACTIVE_LOW),
- GPIO_LOOKUP("davinci_gpio.0", 29, "wp", GPIO_ACTIVE_LOW),
+ GPIO_LOOKUP("davinci_gpio.0", DA850_HAWK_MMCSD_CD_PIN, "cd",
+ GPIO_ACTIVE_LOW),
+ GPIO_LOOKUP("davinci_gpio.0", DA850_HAWK_MMCSD_WP_PIN, "wp",
+ GPIO_ACTIVE_LOW),
},
};
diff --git a/arch/arm/mach-davinci/dm646x.c b/arch/arm/mach-davinci/dm646x.c
index 109ab1f..c32ca27 100644
--- a/arch/arm/mach-davinci/dm646x.c
+++ b/arch/arm/mach-davinci/dm646x.c
@@ -488,7 +488,8 @@
[IRQ_DM646X_MCASP0TXINT] = 7,
[IRQ_DM646X_MCASP0RXINT] = 7,
[IRQ_DM646X_RESERVED_3] = 7,
- [IRQ_DM646X_MCASP1TXINT] = 7, /* clockevent */
+ [IRQ_DM646X_MCASP1TXINT] = 7,
+ [IRQ_TINT0_TINT12] = 7, /* clockevent */
[IRQ_TINT0_TINT34] = 7, /* clocksource */
[IRQ_TINT1_TINT12] = 7, /* DSP timer */
[IRQ_TINT1_TINT34] = 7, /* system tick */
diff --git a/arch/arm/mach-keystone/pm_domain.c b/arch/arm/mach-keystone/pm_domain.c
index fe57e26..abca83d 100644
--- a/arch/arm/mach-keystone/pm_domain.c
+++ b/arch/arm/mach-keystone/pm_domain.c
@@ -29,6 +29,7 @@
static struct pm_clk_notifier_block platform_domain_notifier = {
.pm_domain = &keystone_pm_domain,
+ .con_ids = { NULL },
};
static const struct of_device_id of_keystone_table[] = {
diff --git a/arch/arm/mach-omap1/ams-delta-fiq.c b/arch/arm/mach-omap1/ams-delta-fiq.c
index 793a24a..d7ca9e2 100644
--- a/arch/arm/mach-omap1/ams-delta-fiq.c
+++ b/arch/arm/mach-omap1/ams-delta-fiq.c
@@ -58,22 +58,24 @@
irq_num = gpio_to_irq(gpio);
fiq_count = fiq_buffer[FIQ_CNT_INT_00 + gpio];
- while (irq_counter[gpio] < fiq_count) {
- if (gpio != AMS_DELTA_GPIO_PIN_KEYBRD_CLK) {
- struct irq_data *d = irq_get_irq_data(irq_num);
+ if (irq_counter[gpio] < fiq_count &&
+ gpio != AMS_DELTA_GPIO_PIN_KEYBRD_CLK) {
+ struct irq_data *d = irq_get_irq_data(irq_num);
- /*
- * It looks like handle_edge_irq() that
- * OMAP GPIO edge interrupts default to,
- * expects interrupt already unmasked.
- */
- if (irq_chip && irq_chip->irq_unmask)
+ /*
+ * handle_simple_irq() that OMAP GPIO edge
+ * interrupts default to since commit 80ac93c27441
+ * requires interrupt already acked and unmasked.
+ */
+ if (irq_chip) {
+ if (irq_chip->irq_ack)
+ irq_chip->irq_ack(d);
+ if (irq_chip->irq_unmask)
irq_chip->irq_unmask(d);
}
- generic_handle_irq(irq_num);
-
- irq_counter[gpio]++;
}
+ for (; irq_counter[gpio] < fiq_count; irq_counter[gpio]++)
+ generic_handle_irq(irq_num);
}
return IRQ_HANDLED;
}
diff --git a/arch/arm/mach-omap2/powerdomain.c b/arch/arm/mach-omap2/powerdomain.c
index 76eb6ec..1e6a967 100644
--- a/arch/arm/mach-omap2/powerdomain.c
+++ b/arch/arm/mach-omap2/powerdomain.c
@@ -188,7 +188,7 @@
((prev & OMAP_POWERSTATE_MASK) << 0));
trace_power_domain_target_rcuidle(pwrdm->name,
trace_state,
- smp_processor_id());
+ raw_smp_processor_id());
}
break;
default:
@@ -518,7 +518,7 @@
if (arch_pwrdm && arch_pwrdm->pwrdm_set_next_pwrst) {
/* Trace the pwrdm desired target state */
trace_power_domain_target_rcuidle(pwrdm->name, pwrst,
- smp_processor_id());
+ raw_smp_processor_id());
/* Program the pwrdm desired target state */
ret = arch_pwrdm->pwrdm_set_next_pwrst(pwrdm, pwrst);
}
diff --git a/arch/arm64/boot/dts/exynos/exynos5433.dtsi b/arch/arm64/boot/dts/exynos/exynos5433.dtsi
index c0231d0..1ad8677 100644
--- a/arch/arm64/boot/dts/exynos/exynos5433.dtsi
+++ b/arch/arm64/boot/dts/exynos/exynos5433.dtsi
@@ -1317,7 +1317,7 @@
reg = <0x14d60000 0x100>;
dmas = <&pdma0 31 &pdma0 30>;
dma-names = "tx", "rx";
- interrupts = <GIC_SPI 435 IRQ_TYPE_NONE>;
+ interrupts = <GIC_SPI 435 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&cmu_peric CLK_PCLK_I2S1>,
<&cmu_peric CLK_PCLK_I2S1>,
<&cmu_peric CLK_SCLK_I2S1>;
diff --git a/arch/arm64/boot/dts/marvell/armada-cp110.dtsi b/arch/arm64/boot/dts/marvell/armada-cp110.dtsi
index 48cad79..ed2f123 100644
--- a/arch/arm64/boot/dts/marvell/armada-cp110.dtsi
+++ b/arch/arm64/boot/dts/marvell/armada-cp110.dtsi
@@ -38,9 +38,10 @@
compatible = "marvell,armada-7k-pp22";
reg = <0x0 0x100000>, <0x129000 0xb000>;
clocks = <&CP110_LABEL(clk) 1 3>, <&CP110_LABEL(clk) 1 9>,
- <&CP110_LABEL(clk) 1 5>, <&CP110_LABEL(clk) 1 18>;
+ <&CP110_LABEL(clk) 1 5>, <&CP110_LABEL(clk) 1 6>,
+ <&CP110_LABEL(clk) 1 18>;
clock-names = "pp_clk", "gop_clk",
- "mg_clk", "axi_clk";
+ "mg_clk", "mg_core_clk", "axi_clk";
marvell,system-controller = <&CP110_LABEL(syscon0)>;
status = "disabled";
dma-coherent;
@@ -141,6 +142,8 @@
#size-cells = <0>;
compatible = "marvell,xmdio";
reg = <0x12a600 0x10>;
+ clocks = <&CP110_LABEL(clk) 1 5>,
+ <&CP110_LABEL(clk) 1 6>, <&CP110_LABEL(clk) 1 18>;
status = "disabled";
};
diff --git a/arch/arm64/boot/dts/nvidia/tegra186-p3310.dtsi b/arch/arm64/boot/dts/nvidia/tegra186-p3310.dtsi
index a8baad7..13f57ff 100644
--- a/arch/arm64/boot/dts/nvidia/tegra186-p3310.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra186-p3310.dtsi
@@ -46,7 +46,7 @@
compatible = "ethernet-phy-ieee802.3-c22";
reg = <0x0>;
interrupt-parent = <&gpio>;
- interrupts = <TEGRA_MAIN_GPIO(M, 5) IRQ_TYPE_LEVEL_HIGH>;
+ interrupts = <TEGRA_MAIN_GPIO(M, 5) IRQ_TYPE_LEVEL_LOW>;
};
};
};
diff --git a/arch/arm64/boot/dts/socionext/uniphier-ld11.dtsi b/arch/arm64/boot/dts/socionext/uniphier-ld11.dtsi
index e62bda1..c32dd34 100644
--- a/arch/arm64/boot/dts/socionext/uniphier-ld11.dtsi
+++ b/arch/arm64/boot/dts/socionext/uniphier-ld11.dtsi
@@ -414,7 +414,7 @@
mmc-ddr-1_8v;
mmc-hs200-1_8v;
mmc-pwrseq = <&emmc_pwrseq>;
- cdns,phy-input-delay-legacy = <4>;
+ cdns,phy-input-delay-legacy = <9>;
cdns,phy-input-delay-mmc-highspeed = <2>;
cdns,phy-input-delay-mmc-ddr = <3>;
cdns,phy-dll-delay-sdclk = <21>;
diff --git a/arch/arm64/boot/dts/socionext/uniphier-ld20-ref.dts b/arch/arm64/boot/dts/socionext/uniphier-ld20-ref.dts
index 2c1a92f..440c2e6 100644
--- a/arch/arm64/boot/dts/socionext/uniphier-ld20-ref.dts
+++ b/arch/arm64/boot/dts/socionext/uniphier-ld20-ref.dts
@@ -67,3 +67,11 @@
reg = <0>;
};
};
+
+&pinctrl_ether_rgmii {
+ tx {
+ pins = "RGMII_TXCLK", "RGMII_TXD0", "RGMII_TXD1",
+ "RGMII_TXD2", "RGMII_TXD3", "RGMII_TXCTL";
+ drive-strength = <9>;
+ };
+};
diff --git a/arch/arm64/boot/dts/socionext/uniphier-ld20.dtsi b/arch/arm64/boot/dts/socionext/uniphier-ld20.dtsi
index 9efe20d..3a5ed78 100644
--- a/arch/arm64/boot/dts/socionext/uniphier-ld20.dtsi
+++ b/arch/arm64/boot/dts/socionext/uniphier-ld20.dtsi
@@ -519,7 +519,7 @@
mmc-ddr-1_8v;
mmc-hs200-1_8v;
mmc-pwrseq = <&emmc_pwrseq>;
- cdns,phy-input-delay-legacy = <4>;
+ cdns,phy-input-delay-legacy = <9>;
cdns,phy-input-delay-mmc-highspeed = <2>;
cdns,phy-input-delay-mmc-ddr = <3>;
cdns,phy-dll-delay-sdclk = <21>;
diff --git a/arch/arm64/boot/dts/socionext/uniphier-pxs3.dtsi b/arch/arm64/boot/dts/socionext/uniphier-pxs3.dtsi
index 7c8f710..e85d6dd 100644
--- a/arch/arm64/boot/dts/socionext/uniphier-pxs3.dtsi
+++ b/arch/arm64/boot/dts/socionext/uniphier-pxs3.dtsi
@@ -334,7 +334,7 @@
mmc-ddr-1_8v;
mmc-hs200-1_8v;
mmc-pwrseq = <&emmc_pwrseq>;
- cdns,phy-input-delay-legacy = <4>;
+ cdns,phy-input-delay-legacy = <9>;
cdns,phy-input-delay-mmc-highspeed = <2>;
cdns,phy-input-delay-mmc-ddr = <3>;
cdns,phy-dll-delay-sdclk = <21>;
diff --git a/arch/arm64/include/asm/kvm_mmu.h b/arch/arm64/include/asm/kvm_mmu.h
index 0821109..6128992 100644
--- a/arch/arm64/include/asm/kvm_mmu.h
+++ b/arch/arm64/include/asm/kvm_mmu.h
@@ -360,6 +360,22 @@
return (cpuid_feature_extract_unsigned_field(reg, ID_AA64MMFR1_VMIDBITS_SHIFT) == 2) ? 16 : 8;
}
+/*
+ * We are not in the kvm->srcu critical section most of the time, so we take
+ * the SRCU read lock here. Since we copy the data from the user page, we
+ * can immediately drop the lock again.
+ */
+static inline int kvm_read_guest_lock(struct kvm *kvm,
+ gpa_t gpa, void *data, unsigned long len)
+{
+ int srcu_idx = srcu_read_lock(&kvm->srcu);
+ int ret = kvm_read_guest(kvm, gpa, data, len);
+
+ srcu_read_unlock(&kvm->srcu, srcu_idx);
+
+ return ret;
+}
+
#ifdef CONFIG_KVM_INDIRECT_VECTORS
/*
* EL2 vectors can be mapped and rerouted in a number of ways,
diff --git a/arch/powerpc/platforms/powernv/opal-nvram.c b/arch/powerpc/platforms/powernv/opal-nvram.c
index 1bceb95..5584247 100644
--- a/arch/powerpc/platforms/powernv/opal-nvram.c
+++ b/arch/powerpc/platforms/powernv/opal-nvram.c
@@ -44,6 +44,10 @@
return count;
}
+/*
+ * This can be called in the panic path with interrupts off, so use
+ * mdelay in that case.
+ */
static ssize_t opal_nvram_write(char *buf, size_t count, loff_t *index)
{
s64 rc = OPAL_BUSY;
@@ -58,10 +62,16 @@
while (rc == OPAL_BUSY || rc == OPAL_BUSY_EVENT) {
rc = opal_write_nvram(__pa(buf), count, off);
if (rc == OPAL_BUSY_EVENT) {
- msleep(OPAL_BUSY_DELAY_MS);
+ if (in_interrupt() || irqs_disabled())
+ mdelay(OPAL_BUSY_DELAY_MS);
+ else
+ msleep(OPAL_BUSY_DELAY_MS);
opal_poll_events(NULL);
} else if (rc == OPAL_BUSY) {
- msleep(OPAL_BUSY_DELAY_MS);
+ if (in_interrupt() || irqs_disabled())
+ mdelay(OPAL_BUSY_DELAY_MS);
+ else
+ msleep(OPAL_BUSY_DELAY_MS);
}
}
diff --git a/arch/s390/configs/debug_defconfig b/arch/s390/configs/debug_defconfig
index 6176fe9..941d8cc 100644
--- a/arch/s390/configs/debug_defconfig
+++ b/arch/s390/configs/debug_defconfig
@@ -261,9 +261,9 @@
CONFIG_IP_VS_FTP=m
CONFIG_IP_VS_PE_SIP=m
CONFIG_NF_CONNTRACK_IPV4=m
-CONFIG_NF_TABLES_IPV4=m
+CONFIG_NF_TABLES_IPV4=y
CONFIG_NFT_CHAIN_ROUTE_IPV4=m
-CONFIG_NF_TABLES_ARP=m
+CONFIG_NF_TABLES_ARP=y
CONFIG_NFT_CHAIN_NAT_IPV4=m
CONFIG_IP_NF_IPTABLES=m
CONFIG_IP_NF_MATCH_AH=m
@@ -284,7 +284,7 @@
CONFIG_IP_NF_ARPFILTER=m
CONFIG_IP_NF_ARP_MANGLE=m
CONFIG_NF_CONNTRACK_IPV6=m
-CONFIG_NF_TABLES_IPV6=m
+CONFIG_NF_TABLES_IPV6=y
CONFIG_NFT_CHAIN_ROUTE_IPV6=m
CONFIG_NFT_CHAIN_NAT_IPV6=m
CONFIG_IP6_NF_IPTABLES=m
@@ -305,7 +305,7 @@
CONFIG_IP6_NF_SECURITY=m
CONFIG_IP6_NF_NAT=m
CONFIG_IP6_NF_TARGET_MASQUERADE=m
-CONFIG_NF_TABLES_BRIDGE=m
+CONFIG_NF_TABLES_BRIDGE=y
CONFIG_RDS=m
CONFIG_RDS_RDMA=m
CONFIG_RDS_TCP=m
@@ -604,7 +604,6 @@
CONFIG_WQ_WATCHDOG=y
CONFIG_PANIC_ON_OOPS=y
CONFIG_DEBUG_TIMEKEEPING=y
-CONFIG_DEBUG_WW_MUTEX_SLOWPATH=y
CONFIG_PROVE_LOCKING=y
CONFIG_LOCK_STAT=y
CONFIG_DEBUG_LOCKDEP=y
diff --git a/arch/s390/configs/performance_defconfig b/arch/s390/configs/performance_defconfig
index c105bcc..eb6f75f 100644
--- a/arch/s390/configs/performance_defconfig
+++ b/arch/s390/configs/performance_defconfig
@@ -259,9 +259,9 @@
CONFIG_IP_VS_FTP=m
CONFIG_IP_VS_PE_SIP=m
CONFIG_NF_CONNTRACK_IPV4=m
-CONFIG_NF_TABLES_IPV4=m
+CONFIG_NF_TABLES_IPV4=y
CONFIG_NFT_CHAIN_ROUTE_IPV4=m
-CONFIG_NF_TABLES_ARP=m
+CONFIG_NF_TABLES_ARP=y
CONFIG_NFT_CHAIN_NAT_IPV4=m
CONFIG_IP_NF_IPTABLES=m
CONFIG_IP_NF_MATCH_AH=m
@@ -282,7 +282,7 @@
CONFIG_IP_NF_ARPFILTER=m
CONFIG_IP_NF_ARP_MANGLE=m
CONFIG_NF_CONNTRACK_IPV6=m
-CONFIG_NF_TABLES_IPV6=m
+CONFIG_NF_TABLES_IPV6=y
CONFIG_NFT_CHAIN_ROUTE_IPV6=m
CONFIG_NFT_CHAIN_NAT_IPV6=m
CONFIG_IP6_NF_IPTABLES=m
@@ -303,7 +303,7 @@
CONFIG_IP6_NF_SECURITY=m
CONFIG_IP6_NF_NAT=m
CONFIG_IP6_NF_TARGET_MASQUERADE=m
-CONFIG_NF_TABLES_BRIDGE=m
+CONFIG_NF_TABLES_BRIDGE=y
CONFIG_RDS=m
CONFIG_RDS_RDMA=m
CONFIG_RDS_TCP=m
diff --git a/arch/s390/crypto/crc32be-vx.S b/arch/s390/crypto/crc32be-vx.S
index e8077f0..2bf01ba 100644
--- a/arch/s390/crypto/crc32be-vx.S
+++ b/arch/s390/crypto/crc32be-vx.S
@@ -13,6 +13,7 @@
*/
#include <linux/linkage.h>
+#include <asm/nospec-insn.h>
#include <asm/vx-insn.h>
/* Vector register range containing CRC-32 constants */
@@ -67,6 +68,8 @@
.previous
+ GEN_BR_THUNK %r14
+
.text
/*
* The CRC-32 function(s) use these calling conventions:
@@ -203,6 +206,6 @@
.Ldone:
VLGVF %r2,%v2,3
- br %r14
+ BR_EX %r14
.previous
diff --git a/arch/s390/crypto/crc32le-vx.S b/arch/s390/crypto/crc32le-vx.S
index d8c67a58..7d6f568 100644
--- a/arch/s390/crypto/crc32le-vx.S
+++ b/arch/s390/crypto/crc32le-vx.S
@@ -14,6 +14,7 @@
*/
#include <linux/linkage.h>
+#include <asm/nospec-insn.h>
#include <asm/vx-insn.h>
/* Vector register range containing CRC-32 constants */
@@ -76,6 +77,7 @@
.previous
+ GEN_BR_THUNK %r14
.text
@@ -264,6 +266,6 @@
.Ldone:
VLGVF %r2,%v2,2
- br %r14
+ BR_EX %r14
.previous
diff --git a/arch/s390/include/asm/nospec-insn.h b/arch/s390/include/asm/nospec-insn.h
new file mode 100644
index 0000000..a01f811
--- /dev/null
+++ b/arch/s390/include/asm/nospec-insn.h
@@ -0,0 +1,196 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _ASM_S390_NOSPEC_ASM_H
+#define _ASM_S390_NOSPEC_ASM_H
+
+#include <asm/alternative-asm.h>
+#include <asm/asm-offsets.h>
+#include <asm/dwarf.h>
+
+#ifdef __ASSEMBLY__
+
+#ifdef CONFIG_EXPOLINE
+
+_LC_BR_R1 = __LC_BR_R1
+
+/*
+ * The expoline macros are used to create thunks in the same format
+ * as gcc generates them. The 'comdat' section flag makes sure that
+ * the various thunks are merged into a single copy.
+ */
+ .macro __THUNK_PROLOG_NAME name
+ .pushsection .text.\name,"axG",@progbits,\name,comdat
+ .globl \name
+ .hidden \name
+ .type \name,@function
+\name:
+ CFI_STARTPROC
+ .endm
+
+ .macro __THUNK_EPILOG
+ CFI_ENDPROC
+ .popsection
+ .endm
+
+ .macro __THUNK_PROLOG_BR r1,r2
+ __THUNK_PROLOG_NAME __s390x_indirect_jump_r\r2\()use_r\r1
+ .endm
+
+ .macro __THUNK_PROLOG_BC d0,r1,r2
+ __THUNK_PROLOG_NAME __s390x_indirect_branch_\d0\()_\r2\()use_\r1
+ .endm
+
+ .macro __THUNK_BR r1,r2
+ jg __s390x_indirect_jump_r\r2\()use_r\r1
+ .endm
+
+ .macro __THUNK_BC d0,r1,r2
+ jg __s390x_indirect_branch_\d0\()_\r2\()use_\r1
+ .endm
+
+ .macro __THUNK_BRASL r1,r2,r3
+ brasl \r1,__s390x_indirect_jump_r\r3\()use_r\r2
+ .endm
+
+ .macro __DECODE_RR expand,reg,ruse
+ .set __decode_fail,1
+ .irp r1,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15
+ .ifc \reg,%r\r1
+ .irp r2,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15
+ .ifc \ruse,%r\r2
+ \expand \r1,\r2
+ .set __decode_fail,0
+ .endif
+ .endr
+ .endif
+ .endr
+ .if __decode_fail == 1
+ .error "__DECODE_RR failed"
+ .endif
+ .endm
+
+ .macro __DECODE_RRR expand,rsave,rtarget,ruse
+ .set __decode_fail,1
+ .irp r1,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15
+ .ifc \rsave,%r\r1
+ .irp r2,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15
+ .ifc \rtarget,%r\r2
+ .irp r3,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15
+ .ifc \ruse,%r\r3
+ \expand \r1,\r2,\r3
+ .set __decode_fail,0
+ .endif
+ .endr
+ .endif
+ .endr
+ .endif
+ .endr
+ .if __decode_fail == 1
+ .error "__DECODE_RRR failed"
+ .endif
+ .endm
+
+ .macro __DECODE_DRR expand,disp,reg,ruse
+ .set __decode_fail,1
+ .irp r1,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15
+ .ifc \reg,%r\r1
+ .irp r2,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15
+ .ifc \ruse,%r\r2
+ \expand \disp,\r1,\r2
+ .set __decode_fail,0
+ .endif
+ .endr
+ .endif
+ .endr
+ .if __decode_fail == 1
+ .error "__DECODE_DRR failed"
+ .endif
+ .endm
+
+ .macro __THUNK_EX_BR reg,ruse
+ # Be very careful when adding instructions to this macro!
+ # The ALTERNATIVE replacement code has a .+10 which targets
+ # the "br \reg" after the code has been patched.
+#ifdef CONFIG_HAVE_MARCH_Z10_FEATURES
+ exrl 0,555f
+ j .
+#else
+ .ifc \reg,%r1
+ ALTERNATIVE "ex %r0,_LC_BR_R1", ".insn ril,0xc60000000000,0,.+10", 35
+ j .
+ .else
+ larl \ruse,555f
+ ex 0,0(\ruse)
+ j .
+ .endif
+#endif
+555: br \reg
+ .endm
+
+ .macro __THUNK_EX_BC disp,reg,ruse
+#ifdef CONFIG_HAVE_MARCH_Z10_FEATURES
+ exrl 0,556f
+ j .
+#else
+ larl \ruse,556f
+ ex 0,0(\ruse)
+ j .
+#endif
+556: b \disp(\reg)
+ .endm
+
+ .macro GEN_BR_THUNK reg,ruse=%r1
+ __DECODE_RR __THUNK_PROLOG_BR,\reg,\ruse
+ __THUNK_EX_BR \reg,\ruse
+ __THUNK_EPILOG
+ .endm
+
+ .macro GEN_B_THUNK disp,reg,ruse=%r1
+ __DECODE_DRR __THUNK_PROLOG_BC,\disp,\reg,\ruse
+ __THUNK_EX_BC \disp,\reg,\ruse
+ __THUNK_EPILOG
+ .endm
+
+ .macro BR_EX reg,ruse=%r1
+557: __DECODE_RR __THUNK_BR,\reg,\ruse
+ .pushsection .s390_indirect_branches,"a",@progbits
+ .long 557b-.
+ .popsection
+ .endm
+
+ .macro B_EX disp,reg,ruse=%r1
+558: __DECODE_DRR __THUNK_BC,\disp,\reg,\ruse
+ .pushsection .s390_indirect_branches,"a",@progbits
+ .long 558b-.
+ .popsection
+ .endm
+
+ .macro BASR_EX rsave,rtarget,ruse=%r1
+559: __DECODE_RRR __THUNK_BRASL,\rsave,\rtarget,\ruse
+ .pushsection .s390_indirect_branches,"a",@progbits
+ .long 559b-.
+ .popsection
+ .endm
+
+#else
+ .macro GEN_BR_THUNK reg,ruse=%r1
+ .endm
+
+ .macro GEN_B_THUNK disp,reg,ruse=%r1
+ .endm
+
+ .macro BR_EX reg,ruse=%r1
+ br \reg
+ .endm
+
+ .macro B_EX disp,reg,ruse=%r1
+ b \disp(\reg)
+ .endm
+
+ .macro BASR_EX rsave,rtarget,ruse=%r1
+ basr \rsave,\rtarget
+ .endm
+#endif
+
+#endif /* __ASSEMBLY__ */
+
+#endif /* _ASM_S390_NOSPEC_ASM_H */
diff --git a/arch/s390/include/asm/purgatory.h b/arch/s390/include/asm/purgatory.h
index e297bcf..6090670 100644
--- a/arch/s390/include/asm/purgatory.h
+++ b/arch/s390/include/asm/purgatory.h
@@ -13,5 +13,11 @@
int verify_sha256_digest(void);
+extern u64 kernel_entry;
+extern u64 kernel_type;
+
+extern u64 crash_start;
+extern u64 crash_size;
+
#endif /* __ASSEMBLY__ */
#endif /* _S390_PURGATORY_H_ */
diff --git a/arch/s390/kernel/Makefile b/arch/s390/kernel/Makefile
index 84ea622..f92dd8e 100644
--- a/arch/s390/kernel/Makefile
+++ b/arch/s390/kernel/Makefile
@@ -65,6 +65,7 @@
extra-y += head.o head64.o vmlinux.lds
+obj-$(CONFIG_SYSFS) += nospec-sysfs.o
CFLAGS_REMOVE_nospec-branch.o += $(CC_FLAGS_EXPOLINE)
obj-$(CONFIG_MODULES) += module.o
diff --git a/arch/s390/kernel/asm-offsets.c b/arch/s390/kernel/asm-offsets.c
index eb2a5c0..11aea74 100644
--- a/arch/s390/kernel/asm-offsets.c
+++ b/arch/s390/kernel/asm-offsets.c
@@ -181,6 +181,7 @@
OFFSET(__LC_MACHINE_FLAGS, lowcore, machine_flags);
OFFSET(__LC_PREEMPT_COUNT, lowcore, preempt_count);
OFFSET(__LC_GMAP, lowcore, gmap);
+ OFFSET(__LC_BR_R1, lowcore, br_r1_trampoline);
/* software defined ABI-relevant lowcore locations 0xe00 - 0xe20 */
OFFSET(__LC_DUMP_REIPL, lowcore, ipib);
/* hardware defined lowcore locations 0x1000 - 0x18ff */
diff --git a/arch/s390/kernel/base.S b/arch/s390/kernel/base.S
index f6c5600..b65874b 100644
--- a/arch/s390/kernel/base.S
+++ b/arch/s390/kernel/base.S
@@ -9,18 +9,22 @@
#include <linux/linkage.h>
#include <asm/asm-offsets.h>
+#include <asm/nospec-insn.h>
#include <asm/ptrace.h>
#include <asm/sigp.h>
+ GEN_BR_THUNK %r9
+ GEN_BR_THUNK %r14
+
ENTRY(s390_base_mcck_handler)
basr %r13,0
0: lg %r15,__LC_PANIC_STACK # load panic stack
aghi %r15,-STACK_FRAME_OVERHEAD
larl %r1,s390_base_mcck_handler_fn
- lg %r1,0(%r1)
- ltgr %r1,%r1
+ lg %r9,0(%r1)
+ ltgr %r9,%r9
jz 1f
- basr %r14,%r1
+ BASR_EX %r14,%r9
1: la %r1,4095
lmg %r0,%r15,__LC_GPREGS_SAVE_AREA-4095(%r1)
lpswe __LC_MCK_OLD_PSW
@@ -37,10 +41,10 @@
basr %r13,0
0: aghi %r15,-STACK_FRAME_OVERHEAD
larl %r1,s390_base_ext_handler_fn
- lg %r1,0(%r1)
- ltgr %r1,%r1
+ lg %r9,0(%r1)
+ ltgr %r9,%r9
jz 1f
- basr %r14,%r1
+ BASR_EX %r14,%r9
1: lmg %r0,%r15,__LC_SAVE_AREA_ASYNC
ni __LC_EXT_OLD_PSW+1,0xfd # clear wait state bit
lpswe __LC_EXT_OLD_PSW
@@ -57,10 +61,10 @@
basr %r13,0
0: aghi %r15,-STACK_FRAME_OVERHEAD
larl %r1,s390_base_pgm_handler_fn
- lg %r1,0(%r1)
- ltgr %r1,%r1
+ lg %r9,0(%r1)
+ ltgr %r9,%r9
jz 1f
- basr %r14,%r1
+ BASR_EX %r14,%r9
lmg %r0,%r15,__LC_SAVE_AREA_SYNC
lpswe __LC_PGM_OLD_PSW
1: lpswe disabled_wait_psw-0b(%r13)
@@ -117,7 +121,7 @@
larl %r4,.Lcontinue_psw # Restore PSW flags
lpswe 0(%r4)
.Lcontinue:
- br %r14
+ BR_EX %r14
.align 16
.Lrestart_psw:
.long 0x00080000,0x80000000 + .Lrestart_part2
diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S
index 3f22f13..f03402e 100644
--- a/arch/s390/kernel/entry.S
+++ b/arch/s390/kernel/entry.S
@@ -28,6 +28,7 @@
#include <asm/setup.h>
#include <asm/nmi.h>
#include <asm/export.h>
+#include <asm/nospec-insn.h>
__PT_R0 = __PT_GPRS
__PT_R1 = __PT_GPRS + 8
@@ -183,67 +184,9 @@
"jnz .+8; .long 0xb2e8d000", 82
.endm
-#ifdef CONFIG_EXPOLINE
-
- .macro GEN_BR_THUNK name,reg,tmp
- .section .text.\name,"axG",@progbits,\name,comdat
- .globl \name
- .hidden \name
- .type \name,@function
-\name:
- CFI_STARTPROC
-#ifdef CONFIG_HAVE_MARCH_Z10_FEATURES
- exrl 0,0f
-#else
- larl \tmp,0f
- ex 0,0(\tmp)
-#endif
- j .
-0: br \reg
- CFI_ENDPROC
- .endm
-
- GEN_BR_THUNK __s390x_indirect_jump_r1use_r9,%r9,%r1
- GEN_BR_THUNK __s390x_indirect_jump_r1use_r14,%r14,%r1
- GEN_BR_THUNK __s390x_indirect_jump_r11use_r14,%r14,%r11
-
- .macro BASR_R14_R9
-0: brasl %r14,__s390x_indirect_jump_r1use_r9
- .pushsection .s390_indirect_branches,"a",@progbits
- .long 0b-.
- .popsection
- .endm
-
- .macro BR_R1USE_R14
-0: jg __s390x_indirect_jump_r1use_r14
- .pushsection .s390_indirect_branches,"a",@progbits
- .long 0b-.
- .popsection
- .endm
-
- .macro BR_R11USE_R14
-0: jg __s390x_indirect_jump_r11use_r14
- .pushsection .s390_indirect_branches,"a",@progbits
- .long 0b-.
- .popsection
- .endm
-
-#else /* CONFIG_EXPOLINE */
-
- .macro BASR_R14_R9
- basr %r14,%r9
- .endm
-
- .macro BR_R1USE_R14
- br %r14
- .endm
-
- .macro BR_R11USE_R14
- br %r14
- .endm
-
-#endif /* CONFIG_EXPOLINE */
-
+ GEN_BR_THUNK %r9
+ GEN_BR_THUNK %r14
+ GEN_BR_THUNK %r14,%r11
.section .kprobes.text, "ax"
.Ldummy:
@@ -260,7 +203,7 @@
ENTRY(__bpon)
.globl __bpon
BPON
- BR_R1USE_R14
+ BR_EX %r14
/*
* Scheduler resume function, called by switch_to
@@ -284,7 +227,7 @@
mvc __LC_CURRENT_PID(4,%r0),0(%r3) # store pid of next
lmg %r6,%r15,__SF_GPRS(%r15) # load gprs of next task
ALTERNATIVE "", ".insn s,0xb2800000,_LPP_OFFSET", 40
- BR_R1USE_R14
+ BR_EX %r14
.L__critical_start:
@@ -351,7 +294,7 @@
xgr %r5,%r5
lmg %r6,%r14,__SF_GPRS(%r15) # restore kernel registers
lg %r2,__SF_SIE_REASON(%r15) # return exit reason code
- BR_R1USE_R14
+ BR_EX %r14
.Lsie_fault:
lghi %r14,-EFAULT
stg %r14,__SF_SIE_REASON(%r15) # set exit reason code
@@ -410,7 +353,7 @@
lgf %r9,0(%r8,%r10) # get system call add.
TSTMSK __TI_flags(%r12),_TIF_TRACE
jnz .Lsysc_tracesys
- BASR_R14_R9 # call sys_xxxx
+ BASR_EX %r14,%r9 # call sys_xxxx
stg %r2,__PT_R2(%r11) # store return value
.Lsysc_return:
@@ -595,7 +538,7 @@
lmg %r3,%r7,__PT_R3(%r11)
stg %r7,STACK_FRAME_OVERHEAD(%r15)
lg %r2,__PT_ORIG_GPR2(%r11)
- BASR_R14_R9 # call sys_xxx
+ BASR_EX %r14,%r9 # call sys_xxx
stg %r2,__PT_R2(%r11) # store return value
.Lsysc_tracenogo:
TSTMSK __TI_flags(%r12),_TIF_TRACE
@@ -619,7 +562,7 @@
lmg %r9,%r10,__PT_R9(%r11) # load gprs
ENTRY(kernel_thread_starter)
la %r2,0(%r10)
- BASR_R14_R9
+ BASR_EX %r14,%r9
j .Lsysc_tracenogo
/*
@@ -701,7 +644,7 @@
je .Lpgm_return
lgf %r9,0(%r10,%r1) # load address of handler routine
lgr %r2,%r11 # pass pointer to pt_regs
- BASR_R14_R9 # branch to interrupt-handler
+ BASR_EX %r14,%r9 # branch to interrupt-handler
.Lpgm_return:
LOCKDEP_SYS_EXIT
tm __PT_PSW+1(%r11),0x01 # returning to user ?
@@ -1019,7 +962,7 @@
stpt __TIMER_IDLE_ENTER(%r2)
.Lpsw_idle_lpsw:
lpswe __SF_EMPTY(%r15)
- BR_R1USE_R14
+ BR_EX %r14
.Lpsw_idle_end:
/*
@@ -1061,7 +1004,7 @@
.Lsave_fpu_regs_done:
oi __LC_CPU_FLAGS+7,_CIF_FPU
.Lsave_fpu_regs_exit:
- BR_R1USE_R14
+ BR_EX %r14
.Lsave_fpu_regs_end:
EXPORT_SYMBOL(save_fpu_regs)
@@ -1107,7 +1050,7 @@
.Lload_fpu_regs_done:
ni __LC_CPU_FLAGS+7,255-_CIF_FPU
.Lload_fpu_regs_exit:
- BR_R1USE_R14
+ BR_EX %r14
.Lload_fpu_regs_end:
.L__critical_end:
@@ -1322,7 +1265,7 @@
jl 0f
clg %r9,BASED(.Lcleanup_table+104) # .Lload_fpu_regs_end
jl .Lcleanup_load_fpu_regs
-0: BR_R11USE_R14
+0: BR_EX %r14
.align 8
.Lcleanup_table:
@@ -1358,7 +1301,7 @@
ni __SIE_PROG0C+3(%r9),0xfe # no longer in SIE
lctlg %c1,%c1,__LC_USER_ASCE # load primary asce
larl %r9,sie_exit # skip forward to sie_exit
- BR_R11USE_R14
+ BR_EX %r14
#endif
.Lcleanup_system_call:
@@ -1412,7 +1355,7 @@
stg %r15,56(%r11) # r15 stack pointer
# set new psw address and exit
larl %r9,.Lsysc_do_svc
- BR_R11USE_R14
+ BR_EX %r14,%r11
.Lcleanup_system_call_insn:
.quad system_call
.quad .Lsysc_stmg
@@ -1424,7 +1367,7 @@
.Lcleanup_sysc_tif:
larl %r9,.Lsysc_tif
- BR_R11USE_R14
+ BR_EX %r14,%r11
.Lcleanup_sysc_restore:
# check if stpt has been executed
@@ -1441,14 +1384,14 @@
mvc 0(64,%r11),__PT_R8(%r9)
lmg %r0,%r7,__PT_R0(%r9)
1: lmg %r8,%r9,__LC_RETURN_PSW
- BR_R11USE_R14
+ BR_EX %r14,%r11
.Lcleanup_sysc_restore_insn:
.quad .Lsysc_exit_timer
.quad .Lsysc_done - 4
.Lcleanup_io_tif:
larl %r9,.Lio_tif
- BR_R11USE_R14
+ BR_EX %r14,%r11
.Lcleanup_io_restore:
# check if stpt has been executed
@@ -1462,7 +1405,7 @@
mvc 0(64,%r11),__PT_R8(%r9)
lmg %r0,%r7,__PT_R0(%r9)
1: lmg %r8,%r9,__LC_RETURN_PSW
- BR_R11USE_R14
+ BR_EX %r14,%r11
.Lcleanup_io_restore_insn:
.quad .Lio_exit_timer
.quad .Lio_done - 4
@@ -1515,17 +1458,17 @@
# prepare return psw
nihh %r8,0xfcfd # clear irq & wait state bits
lg %r9,48(%r11) # return from psw_idle
- BR_R11USE_R14
+ BR_EX %r14,%r11
.Lcleanup_idle_insn:
.quad .Lpsw_idle_lpsw
.Lcleanup_save_fpu_regs:
larl %r9,save_fpu_regs
- BR_R11USE_R14
+ BR_EX %r14,%r11
.Lcleanup_load_fpu_regs:
larl %r9,load_fpu_regs
- BR_R11USE_R14
+ BR_EX %r14,%r11
/*
* Integer constants
diff --git a/arch/s390/kernel/irq.c b/arch/s390/kernel/irq.c
index 94f2099..3d17c41 100644
--- a/arch/s390/kernel/irq.c
+++ b/arch/s390/kernel/irq.c
@@ -176,10 +176,9 @@
new -= STACK_FRAME_OVERHEAD;
((struct stack_frame *) new)->back_chain = old;
asm volatile(" la 15,0(%0)\n"
- " basr 14,%2\n"
+ " brasl 14,__do_softirq\n"
" la 15,0(%1)\n"
- : : "a" (new), "a" (old),
- "a" (__do_softirq)
+ : : "a" (new), "a" (old)
: "0", "1", "2", "3", "4", "5", "14",
"cc", "memory" );
} else {
diff --git a/arch/s390/kernel/mcount.S b/arch/s390/kernel/mcount.S
index 82df7d8..27110f3 100644
--- a/arch/s390/kernel/mcount.S
+++ b/arch/s390/kernel/mcount.S
@@ -9,13 +9,17 @@
#include <linux/linkage.h>
#include <asm/asm-offsets.h>
#include <asm/ftrace.h>
+#include <asm/nospec-insn.h>
#include <asm/ptrace.h>
#include <asm/export.h>
+ GEN_BR_THUNK %r1
+ GEN_BR_THUNK %r14
+
.section .kprobes.text, "ax"
ENTRY(ftrace_stub)
- br %r14
+ BR_EX %r14
#define STACK_FRAME_SIZE (STACK_FRAME_OVERHEAD + __PT_SIZE)
#define STACK_PTREGS (STACK_FRAME_OVERHEAD)
@@ -23,7 +27,7 @@
#define STACK_PTREGS_PSW (STACK_PTREGS + __PT_PSW)
ENTRY(_mcount)
- br %r14
+ BR_EX %r14
EXPORT_SYMBOL(_mcount)
@@ -53,7 +57,7 @@
#endif
lgr %r3,%r14
la %r5,STACK_PTREGS(%r15)
- basr %r14,%r1
+ BASR_EX %r14,%r1
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
# The j instruction gets runtime patched to a nop instruction.
# See ftrace_enable_ftrace_graph_caller.
@@ -68,7 +72,7 @@
#endif
lg %r1,(STACK_PTREGS_PSW+8)(%r15)
lmg %r2,%r15,(STACK_PTREGS_GPRS+2*8)(%r15)
- br %r1
+ BR_EX %r1
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
@@ -81,6 +85,6 @@
aghi %r15,STACK_FRAME_OVERHEAD
lgr %r14,%r2
lmg %r2,%r5,32(%r15)
- br %r14
+ BR_EX %r14
#endif
diff --git a/arch/s390/kernel/nospec-branch.c b/arch/s390/kernel/nospec-branch.c
index 46d49a1..8ad6a71 100644
--- a/arch/s390/kernel/nospec-branch.c
+++ b/arch/s390/kernel/nospec-branch.c
@@ -1,7 +1,6 @@
// SPDX-License-Identifier: GPL-2.0
#include <linux/module.h>
#include <linux/device.h>
-#include <linux/cpu.h>
#include <asm/nospec-branch.h>
static int __init nobp_setup_early(char *str)
@@ -44,24 +43,6 @@
}
arch_initcall(nospec_report);
-#ifdef CONFIG_SYSFS
-ssize_t cpu_show_spectre_v1(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- return sprintf(buf, "Mitigation: __user pointer sanitization\n");
-}
-
-ssize_t cpu_show_spectre_v2(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- if (IS_ENABLED(CC_USING_EXPOLINE) && !nospec_disable)
- return sprintf(buf, "Mitigation: execute trampolines\n");
- if (__test_facility(82, S390_lowcore.alt_stfle_fac_list))
- return sprintf(buf, "Mitigation: limited branch prediction.\n");
- return sprintf(buf, "Vulnerable\n");
-}
-#endif
-
#ifdef CONFIG_EXPOLINE
int nospec_disable = IS_ENABLED(CONFIG_EXPOLINE_OFF);
@@ -112,7 +93,6 @@
s32 *epo;
/* Second part of the instruction replace is always a nop */
- memcpy(insnbuf + 2, (char[]) { 0x47, 0x00, 0x00, 0x00 }, 4);
for (epo = start; epo < end; epo++) {
instr = (u8 *) epo + *epo;
if (instr[0] == 0xc0 && (instr[1] & 0x0f) == 0x04)
@@ -133,18 +113,34 @@
br = thunk + (*(int *)(thunk + 2)) * 2;
else
continue;
- if (br[0] != 0x07 || (br[1] & 0xf0) != 0xf0)
+ /* Check for unconditional branch 0x07f? or 0x47f???? */
+ if ((br[0] & 0xbf) != 0x07 || (br[1] & 0xf0) != 0xf0)
continue;
+
+ memcpy(insnbuf + 2, (char[]) { 0x47, 0x00, 0x07, 0x00 }, 4);
switch (type) {
case BRCL_EXPOLINE:
- /* brcl to thunk, replace with br + nop */
insnbuf[0] = br[0];
insnbuf[1] = (instr[1] & 0xf0) | (br[1] & 0x0f);
+ if (br[0] == 0x47) {
+ /* brcl to b, replace with bc + nopr */
+ insnbuf[2] = br[2];
+ insnbuf[3] = br[3];
+ } else {
+ /* brcl to br, replace with bcr + nop */
+ }
break;
case BRASL_EXPOLINE:
- /* brasl to thunk, replace with basr + nop */
- insnbuf[0] = 0x0d;
insnbuf[1] = (instr[1] & 0xf0) | (br[1] & 0x0f);
+ if (br[0] == 0x47) {
+ /* brasl to b, replace with bas + nopr */
+ insnbuf[0] = 0x4d;
+ insnbuf[2] = br[2];
+ insnbuf[3] = br[3];
+ } else {
+ /* brasl to br, replace with basr + nop */
+ insnbuf[0] = 0x0d;
+ }
break;
}
diff --git a/arch/s390/kernel/nospec-sysfs.c b/arch/s390/kernel/nospec-sysfs.c
new file mode 100644
index 0000000..8affad5
--- /dev/null
+++ b/arch/s390/kernel/nospec-sysfs.c
@@ -0,0 +1,21 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <linux/device.h>
+#include <linux/cpu.h>
+#include <asm/facility.h>
+#include <asm/nospec-branch.h>
+
+ssize_t cpu_show_spectre_v1(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ return sprintf(buf, "Mitigation: __user pointer sanitization\n");
+}
+
+ssize_t cpu_show_spectre_v2(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ if (IS_ENABLED(CC_USING_EXPOLINE) && !nospec_disable)
+ return sprintf(buf, "Mitigation: execute trampolines\n");
+ if (__test_facility(82, S390_lowcore.alt_stfle_fac_list))
+ return sprintf(buf, "Mitigation: limited branch prediction\n");
+ return sprintf(buf, "Vulnerable\n");
+}
diff --git a/arch/s390/kernel/perf_cpum_sf.c b/arch/s390/kernel/perf_cpum_sf.c
index 1c9ddd7..0292d68 100644
--- a/arch/s390/kernel/perf_cpum_sf.c
+++ b/arch/s390/kernel/perf_cpum_sf.c
@@ -753,6 +753,10 @@
*/
rate = 0;
if (attr->freq) {
+ if (!attr->sample_freq) {
+ err = -EINVAL;
+ goto out;
+ }
rate = freq_to_sample_rate(&si, attr->sample_freq);
rate = hw_limit_rate(&si, rate);
attr->freq = 0;
diff --git a/arch/s390/kernel/reipl.S b/arch/s390/kernel/reipl.S
index 73cc375..7f14adf 100644
--- a/arch/s390/kernel/reipl.S
+++ b/arch/s390/kernel/reipl.S
@@ -7,8 +7,11 @@
#include <linux/linkage.h>
#include <asm/asm-offsets.h>
+#include <asm/nospec-insn.h>
#include <asm/sigp.h>
+ GEN_BR_THUNK %r9
+
#
# Issue "store status" for the current CPU to its prefix page
# and call passed function afterwards
@@ -67,9 +70,9 @@
st %r4,0(%r1)
st %r5,4(%r1)
stg %r2,8(%r1)
- lgr %r1,%r2
+ lgr %r9,%r2
lgr %r2,%r3
- br %r1
+ BR_EX %r9
.section .bss
.align 8
diff --git a/arch/s390/kernel/swsusp.S b/arch/s390/kernel/swsusp.S
index e991871..a049a7b 100644
--- a/arch/s390/kernel/swsusp.S
+++ b/arch/s390/kernel/swsusp.S
@@ -13,6 +13,7 @@
#include <asm/ptrace.h>
#include <asm/thread_info.h>
#include <asm/asm-offsets.h>
+#include <asm/nospec-insn.h>
#include <asm/sigp.h>
/*
@@ -24,6 +25,8 @@
* (see below) in the resume process.
* This function runs with disabled interrupts.
*/
+ GEN_BR_THUNK %r14
+
.section .text
ENTRY(swsusp_arch_suspend)
stmg %r6,%r15,__SF_GPRS(%r15)
@@ -103,7 +106,7 @@
spx 0x318(%r1)
lmg %r6,%r15,STACK_FRAME_OVERHEAD + __SF_GPRS(%r15)
lghi %r2,0
- br %r14
+ BR_EX %r14
/*
* Restore saved memory image to correct place and restore register context.
@@ -197,11 +200,10 @@
larl %r15,init_thread_union
ahi %r15,1<<(PAGE_SHIFT+THREAD_SIZE_ORDER)
larl %r2,.Lpanic_string
- larl %r3,sclp_early_printk
lghi %r1,0
sam31
sigp %r1,%r0,SIGP_SET_ARCHITECTURE
- basr %r14,%r3
+ brasl %r14,sclp_early_printk
larl %r3,.Ldisabled_wait_31
lpsw 0(%r3)
4:
@@ -267,7 +269,7 @@
/* Return 0 */
lmg %r6,%r15,STACK_FRAME_OVERHEAD + __SF_GPRS(%r15)
lghi %r2,0
- br %r14
+ BR_EX %r14
.section .data..nosave,"aw",@progbits
.align 8
diff --git a/arch/s390/lib/mem.S b/arch/s390/lib/mem.S
index 495c9c4..2311f15 100644
--- a/arch/s390/lib/mem.S
+++ b/arch/s390/lib/mem.S
@@ -7,6 +7,9 @@
#include <linux/linkage.h>
#include <asm/export.h>
+#include <asm/nospec-insn.h>
+
+ GEN_BR_THUNK %r14
/*
* void *memmove(void *dest, const void *src, size_t n)
@@ -33,14 +36,14 @@
.Lmemmove_forward_remainder:
larl %r5,.Lmemmove_mvc
ex %r4,0(%r5)
- br %r14
+ BR_EX %r14
.Lmemmove_reverse:
ic %r0,0(%r4,%r3)
stc %r0,0(%r4,%r1)
brctg %r4,.Lmemmove_reverse
ic %r0,0(%r4,%r3)
stc %r0,0(%r4,%r1)
- br %r14
+ BR_EX %r14
.Lmemmove_mvc:
mvc 0(1,%r1),0(%r3)
EXPORT_SYMBOL(memmove)
@@ -77,7 +80,7 @@
.Lmemset_clear_remainder:
larl %r3,.Lmemset_xc
ex %r4,0(%r3)
- br %r14
+ BR_EX %r14
.Lmemset_fill:
cghi %r4,1
lgr %r1,%r2
@@ -95,10 +98,10 @@
stc %r3,0(%r1)
larl %r5,.Lmemset_mvc
ex %r4,0(%r5)
- br %r14
+ BR_EX %r14
.Lmemset_fill_exit:
stc %r3,0(%r1)
- br %r14
+ BR_EX %r14
.Lmemset_xc:
xc 0(1,%r1),0(%r1)
.Lmemset_mvc:
@@ -121,7 +124,7 @@
.Lmemcpy_remainder:
larl %r5,.Lmemcpy_mvc
ex %r4,0(%r5)
- br %r14
+ BR_EX %r14
.Lmemcpy_loop:
mvc 0(256,%r1),0(%r3)
la %r1,256(%r1)
@@ -159,10 +162,10 @@
\insn %r3,0(%r1)
larl %r5,.L__memset_mvc\bits
ex %r4,0(%r5)
- br %r14
+ BR_EX %r14
.L__memset_exit\bits:
\insn %r3,0(%r2)
- br %r14
+ BR_EX %r14
.L__memset_mvc\bits:
mvc \bytes(1,%r1),0(%r1)
.endm
diff --git a/arch/s390/net/bpf_jit.S b/arch/s390/net/bpf_jit.S
index 25bb464..9f79486 100644
--- a/arch/s390/net/bpf_jit.S
+++ b/arch/s390/net/bpf_jit.S
@@ -9,6 +9,7 @@
*/
#include <linux/linkage.h>
+#include <asm/nospec-insn.h>
#include "bpf_jit.h"
/*
@@ -54,7 +55,7 @@
clg %r3,STK_OFF_HLEN(%r15); /* Offset + SIZE > hlen? */ \
jh sk_load_##NAME##_slow; \
LOAD %r14,-SIZE(%r3,%r12); /* Get data from skb */ \
- b OFF_OK(%r6); /* Return */ \
+ B_EX OFF_OK,%r6; /* Return */ \
\
sk_load_##NAME##_slow:; \
lgr %r2,%r7; /* Arg1 = skb pointer */ \
@@ -64,11 +65,14 @@
brasl %r14,skb_copy_bits; /* Get data from skb */ \
LOAD %r14,STK_OFF_TMP(%r15); /* Load from temp bufffer */ \
ltgr %r2,%r2; /* Set cc to (%r2 != 0) */ \
- br %r6; /* Return */
+ BR_EX %r6; /* Return */
sk_load_common(word, 4, llgf) /* r14 = *(u32 *) (skb->data+offset) */
sk_load_common(half, 2, llgh) /* r14 = *(u16 *) (skb->data+offset) */
+ GEN_BR_THUNK %r6
+ GEN_B_THUNK OFF_OK,%r6
+
/*
* Load 1 byte from SKB (optimized version)
*/
@@ -80,7 +84,7 @@
clg %r3,STK_OFF_HLEN(%r15) # Offset >= hlen?
jnl sk_load_byte_slow
llgc %r14,0(%r3,%r12) # Get byte from skb
- b OFF_OK(%r6) # Return OK
+ B_EX OFF_OK,%r6 # Return OK
sk_load_byte_slow:
lgr %r2,%r7 # Arg1 = skb pointer
@@ -90,7 +94,7 @@
brasl %r14,skb_copy_bits # Get data from skb
llgc %r14,STK_OFF_TMP(%r15) # Load result from temp buffer
ltgr %r2,%r2 # Set cc to (%r2 != 0)
- br %r6 # Return cc
+ BR_EX %r6 # Return cc
#define sk_negative_common(NAME, SIZE, LOAD) \
sk_load_##NAME##_slow_neg:; \
@@ -104,7 +108,7 @@
jz bpf_error; \
LOAD %r14,0(%r2); /* Get data from pointer */ \
xr %r3,%r3; /* Set cc to zero */ \
- br %r6; /* Return cc */
+ BR_EX %r6; /* Return cc */
sk_negative_common(word, 4, llgf)
sk_negative_common(half, 2, llgh)
@@ -113,4 +117,4 @@
bpf_error:
# force a return 0 from jit handler
ltgr %r15,%r15 # Set condition code
- br %r6
+ BR_EX %r6
diff --git a/arch/s390/net/bpf_jit_comp.c b/arch/s390/net/bpf_jit_comp.c
index 78a19c9..dd2bcf0 100644
--- a/arch/s390/net/bpf_jit_comp.c
+++ b/arch/s390/net/bpf_jit_comp.c
@@ -25,6 +25,8 @@
#include <linux/bpf.h>
#include <asm/cacheflush.h>
#include <asm/dis.h>
+#include <asm/facility.h>
+#include <asm/nospec-branch.h>
#include <asm/set_memory.h>
#include "bpf_jit.h"
@@ -41,6 +43,8 @@
int base_ip; /* Base address for literal pool */
int ret0_ip; /* Address of return 0 */
int exit_ip; /* Address of exit */
+ int r1_thunk_ip; /* Address of expoline thunk for 'br %r1' */
+ int r14_thunk_ip; /* Address of expoline thunk for 'br %r14' */
int tail_call_start; /* Tail call start offset */
int labels[1]; /* Labels for local jumps */
};
@@ -250,6 +254,19 @@
REG_SET_SEEN(b2); \
})
+#define EMIT6_PCREL_RILB(op, b, target) \
+({ \
+ int rel = (target - jit->prg) / 2; \
+ _EMIT6(op | reg_high(b) << 16 | rel >> 16, rel & 0xffff); \
+ REG_SET_SEEN(b); \
+})
+
+#define EMIT6_PCREL_RIL(op, target) \
+({ \
+ int rel = (target - jit->prg) / 2; \
+ _EMIT6(op | rel >> 16, rel & 0xffff); \
+})
+
#define _EMIT6_IMM(op, imm) \
({ \
unsigned int __imm = (imm); \
@@ -469,8 +486,45 @@
EMIT4(0xb9040000, REG_2, BPF_REG_0);
/* Restore registers */
save_restore_regs(jit, REGS_RESTORE, stack_depth);
+ if (IS_ENABLED(CC_USING_EXPOLINE) && !nospec_disable) {
+ jit->r14_thunk_ip = jit->prg;
+ /* Generate __s390_indirect_jump_r14 thunk */
+ if (test_facility(35)) {
+ /* exrl %r0,.+10 */
+ EMIT6_PCREL_RIL(0xc6000000, jit->prg + 10);
+ } else {
+ /* larl %r1,.+14 */
+ EMIT6_PCREL_RILB(0xc0000000, REG_1, jit->prg + 14);
+ /* ex 0,0(%r1) */
+ EMIT4_DISP(0x44000000, REG_0, REG_1, 0);
+ }
+ /* j . */
+ EMIT4_PCREL(0xa7f40000, 0);
+ }
/* br %r14 */
_EMIT2(0x07fe);
+
+ if (IS_ENABLED(CC_USING_EXPOLINE) && !nospec_disable &&
+ (jit->seen & SEEN_FUNC)) {
+ jit->r1_thunk_ip = jit->prg;
+ /* Generate __s390_indirect_jump_r1 thunk */
+ if (test_facility(35)) {
+ /* exrl %r0,.+10 */
+ EMIT6_PCREL_RIL(0xc6000000, jit->prg + 10);
+ /* j . */
+ EMIT4_PCREL(0xa7f40000, 0);
+ /* br %r1 */
+ _EMIT2(0x07f1);
+ } else {
+ /* larl %r1,.+14 */
+ EMIT6_PCREL_RILB(0xc0000000, REG_1, jit->prg + 14);
+ /* ex 0,S390_lowcore.br_r1_tampoline */
+ EMIT4_DISP(0x44000000, REG_0, REG_0,
+ offsetof(struct lowcore, br_r1_trampoline));
+ /* j . */
+ EMIT4_PCREL(0xa7f40000, 0);
+ }
+ }
}
/*
@@ -966,8 +1020,13 @@
/* lg %w1,<d(imm)>(%l) */
EMIT6_DISP_LH(0xe3000000, 0x0004, REG_W1, REG_0, REG_L,
EMIT_CONST_U64(func));
- /* basr %r14,%w1 */
- EMIT2(0x0d00, REG_14, REG_W1);
+ if (IS_ENABLED(CC_USING_EXPOLINE) && !nospec_disable) {
+ /* brasl %r14,__s390_indirect_jump_r1 */
+ EMIT6_PCREL_RILB(0xc0050000, REG_14, jit->r1_thunk_ip);
+ } else {
+ /* basr %r14,%w1 */
+ EMIT2(0x0d00, REG_14, REG_W1);
+ }
/* lgr %b0,%r2: load return value into %b0 */
EMIT4(0xb9040000, BPF_REG_0, REG_2);
if ((jit->seen & SEEN_SKB) &&
diff --git a/arch/x86/boot/compressed/eboot.c b/arch/x86/boot/compressed/eboot.c
index 47d3eff..09f36c0 100644
--- a/arch/x86/boot/compressed/eboot.c
+++ b/arch/x86/boot/compressed/eboot.c
@@ -163,7 +163,8 @@
if (status != EFI_SUCCESS)
goto free_struct;
- memcpy(rom->romdata, pci->romimage, pci->romsize);
+ memcpy(rom->romdata, (void *)(unsigned long)pci->romimage,
+ pci->romsize);
return status;
free_struct:
@@ -269,7 +270,8 @@
if (status != EFI_SUCCESS)
goto free_struct;
- memcpy(rom->romdata, pci->romimage, pci->romsize);
+ memcpy(rom->romdata, (void *)(unsigned long)pci->romimage,
+ pci->romsize);
return status;
free_struct:
diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h
index b27da96..aced6c9 100644
--- a/arch/x86/include/asm/cpufeature.h
+++ b/arch/x86/include/asm/cpufeature.h
@@ -140,6 +140,20 @@
#define setup_force_cpu_bug(bit) setup_force_cpu_cap(bit)
+#if defined(__clang__) && !defined(CC_HAVE_ASM_GOTO)
+
+/*
+ * Workaround for the sake of BPF compilation which utilizes kernel
+ * headers, but clang does not support ASM GOTO and fails the build.
+ */
+#ifndef __BPF_TRACING__
+#warning "Compiler lacks ASM_GOTO support. Add -D __BPF_TRACING__ to your compiler arguments"
+#endif
+
+#define static_cpu_has(bit) boot_cpu_has(bit)
+
+#else
+
/*
* Static testing of CPU features. Used the same as boot_cpu_has().
* These will statically patch the target code for additional
@@ -195,6 +209,7 @@
boot_cpu_has(bit) : \
_static_cpu_has(bit) \
)
+#endif
#define cpu_has_bug(c, bit) cpu_has(c, (bit))
#define set_cpu_bug(c, bit) set_cpu_cap(c, (bit))
diff --git a/arch/x86/include/asm/insn.h b/arch/x86/include/asm/insn.h
index b3e32b0..c2c01f8 100644
--- a/arch/x86/include/asm/insn.h
+++ b/arch/x86/include/asm/insn.h
@@ -208,4 +208,22 @@
return insn_offset_displacement(insn) + insn->displacement.nbytes;
}
+#define POP_SS_OPCODE 0x1f
+#define MOV_SREG_OPCODE 0x8e
+
+/*
+ * Intel SDM Vol.3A 6.8.3 states;
+ * "Any single-step trap that would be delivered following the MOV to SS
+ * instruction or POP to SS instruction (because EFLAGS.TF is 1) is
+ * suppressed."
+ * This function returns true if @insn is MOV SS or POP SS. On these
+ * instructions, single stepping is suppressed.
+ */
+static inline int insn_masking_exception(struct insn *insn)
+{
+ return insn->opcode.bytes[0] == POP_SS_OPCODE ||
+ (insn->opcode.bytes[0] == MOV_SREG_OPCODE &&
+ X86_MODRM_REG(insn->modrm.bytes[0]) == 2);
+}
+
#endif /* _ASM_X86_INSN_H */
diff --git a/arch/x86/include/uapi/asm/kvm_para.h b/arch/x86/include/uapi/asm/kvm_para.h
index 4c851eb..0ede697 100644
--- a/arch/x86/include/uapi/asm/kvm_para.h
+++ b/arch/x86/include/uapi/asm/kvm_para.h
@@ -29,7 +29,7 @@
#define KVM_FEATURE_PV_TLB_FLUSH 9
#define KVM_FEATURE_ASYNC_PF_VMEXIT 10
-#define KVM_HINTS_DEDICATED 0
+#define KVM_HINTS_REALTIME 0
/* The last 8 bits are used to indicate how to interpret the flags field
* in pvclock structure. If no bits are set, all flags are ignored.
diff --git a/arch/x86/kernel/amd_nb.c b/arch/x86/kernel/amd_nb.c
index c88e0b1..b481b95 100644
--- a/arch/x86/kernel/amd_nb.c
+++ b/arch/x86/kernel/amd_nb.c
@@ -14,8 +14,11 @@
#include <asm/amd_nb.h>
#define PCI_DEVICE_ID_AMD_17H_ROOT 0x1450
+#define PCI_DEVICE_ID_AMD_17H_M10H_ROOT 0x15d0
#define PCI_DEVICE_ID_AMD_17H_DF_F3 0x1463
#define PCI_DEVICE_ID_AMD_17H_DF_F4 0x1464
+#define PCI_DEVICE_ID_AMD_17H_M10H_DF_F3 0x15eb
+#define PCI_DEVICE_ID_AMD_17H_M10H_DF_F4 0x15ec
/* Protect the PCI config register pairs used for SMN and DF indirect access. */
static DEFINE_MUTEX(smn_mutex);
@@ -24,6 +27,7 @@
static const struct pci_device_id amd_root_ids[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_17H_ROOT) },
+ { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_17H_M10H_ROOT) },
{}
};
@@ -39,6 +43,7 @@
{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_16H_NB_F3) },
{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_16H_M30H_NB_F3) },
{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_17H_DF_F3) },
+ { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_17H_M10H_DF_F3) },
{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CNB17H_F3) },
{}
};
@@ -51,6 +56,7 @@
{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_16H_NB_F4) },
{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_16H_M30H_NB_F4) },
{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_17H_DF_F4) },
+ { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_17H_M10H_DF_F4) },
{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CNB17H_F4) },
{}
};
diff --git a/arch/x86/kernel/kprobes/core.c b/arch/x86/kernel/kprobes/core.c
index 0715f82..6f4d423 100644
--- a/arch/x86/kernel/kprobes/core.c
+++ b/arch/x86/kernel/kprobes/core.c
@@ -370,6 +370,10 @@
if (insn->opcode.bytes[0] == BREAKPOINT_INSTRUCTION)
return 0;
+ /* We should not singlestep on the exception masking instructions */
+ if (insn_masking_exception(insn))
+ return 0;
+
#ifdef CONFIG_X86_64
/* Only x86_64 has RIP relative instructions */
if (insn_rip_relative(insn)) {
diff --git a/arch/x86/kernel/kvm.c b/arch/x86/kernel/kvm.c
index 7867417..5b2300b 100644
--- a/arch/x86/kernel/kvm.c
+++ b/arch/x86/kernel/kvm.c
@@ -457,7 +457,7 @@
static void __init kvm_smp_prepare_cpus(unsigned int max_cpus)
{
native_smp_prepare_cpus(max_cpus);
- if (kvm_para_has_hint(KVM_HINTS_DEDICATED))
+ if (kvm_para_has_hint(KVM_HINTS_REALTIME))
static_branch_disable(&virt_spin_lock_key);
}
@@ -553,7 +553,7 @@
}
if (kvm_para_has_feature(KVM_FEATURE_PV_TLB_FLUSH) &&
- !kvm_para_has_hint(KVM_HINTS_DEDICATED) &&
+ !kvm_para_has_hint(KVM_HINTS_REALTIME) &&
kvm_para_has_feature(KVM_FEATURE_STEAL_TIME))
pv_mmu_ops.flush_tlb_others = kvm_flush_tlb_others;
@@ -649,7 +649,7 @@
int cpu;
if (kvm_para_has_feature(KVM_FEATURE_PV_TLB_FLUSH) &&
- !kvm_para_has_hint(KVM_HINTS_DEDICATED) &&
+ !kvm_para_has_hint(KVM_HINTS_REALTIME) &&
kvm_para_has_feature(KVM_FEATURE_STEAL_TIME)) {
for_each_possible_cpu(cpu) {
zalloc_cpumask_var_node(per_cpu_ptr(&__pv_tlb_mask, cpu),
@@ -745,7 +745,7 @@
if (!kvm_para_has_feature(KVM_FEATURE_PV_UNHALT))
return;
- if (kvm_para_has_hint(KVM_HINTS_DEDICATED))
+ if (kvm_para_has_hint(KVM_HINTS_REALTIME))
return;
__pv_init_lock_hash();
diff --git a/arch/x86/kernel/machine_kexec_32.c b/arch/x86/kernel/machine_kexec_32.c
index 60cdec6..d1ab07e 100644
--- a/arch/x86/kernel/machine_kexec_32.c
+++ b/arch/x86/kernel/machine_kexec_32.c
@@ -57,12 +57,17 @@
static void machine_kexec_free_page_tables(struct kimage *image)
{
free_page((unsigned long)image->arch.pgd);
+ image->arch.pgd = NULL;
#ifdef CONFIG_X86_PAE
free_page((unsigned long)image->arch.pmd0);
+ image->arch.pmd0 = NULL;
free_page((unsigned long)image->arch.pmd1);
+ image->arch.pmd1 = NULL;
#endif
free_page((unsigned long)image->arch.pte0);
+ image->arch.pte0 = NULL;
free_page((unsigned long)image->arch.pte1);
+ image->arch.pte1 = NULL;
}
static int machine_kexec_alloc_page_tables(struct kimage *image)
@@ -79,7 +84,6 @@
!image->arch.pmd0 || !image->arch.pmd1 ||
#endif
!image->arch.pte0 || !image->arch.pte1) {
- machine_kexec_free_page_tables(image);
return -ENOMEM;
}
return 0;
diff --git a/arch/x86/kernel/machine_kexec_64.c b/arch/x86/kernel/machine_kexec_64.c
index a5e55d8..6010449 100644
--- a/arch/x86/kernel/machine_kexec_64.c
+++ b/arch/x86/kernel/machine_kexec_64.c
@@ -39,9 +39,13 @@
static void free_transition_pgtable(struct kimage *image)
{
free_page((unsigned long)image->arch.p4d);
+ image->arch.p4d = NULL;
free_page((unsigned long)image->arch.pud);
+ image->arch.pud = NULL;
free_page((unsigned long)image->arch.pmd);
+ image->arch.pmd = NULL;
free_page((unsigned long)image->arch.pte);
+ image->arch.pte = NULL;
}
static int init_transition_pgtable(struct kimage *image, pgd_t *pgd)
@@ -91,7 +95,6 @@
set_pte(pte, pfn_pte(paddr >> PAGE_SHIFT, PAGE_KERNEL_EXEC_NOENC));
return 0;
err:
- free_transition_pgtable(image);
return result;
}
diff --git a/arch/x86/kernel/uprobes.c b/arch/x86/kernel/uprobes.c
index 85c7ef2..c84bb53 100644
--- a/arch/x86/kernel/uprobes.c
+++ b/arch/x86/kernel/uprobes.c
@@ -299,6 +299,10 @@
if (is_prefix_bad(insn))
return -ENOTSUPP;
+ /* We should not singlestep on the exception masking instructions */
+ if (insn_masking_exception(insn))
+ return -ENOTSUPP;
+
if (x86_64)
good_insns = good_insns_64;
else
diff --git a/arch/x86/kvm/hyperv.c b/arch/x86/kvm/hyperv.c
index 98618e3..5708e95 100644
--- a/arch/x86/kvm/hyperv.c
+++ b/arch/x86/kvm/hyperv.c
@@ -1265,7 +1265,7 @@
struct kvm_run *run = vcpu->run;
kvm_hv_hypercall_set_result(vcpu, run->hyperv.u.hcall.result);
- return 1;
+ return kvm_skip_emulated_instruction(vcpu);
}
static u16 kvm_hvcall_signal_event(struct kvm_vcpu *vcpu, bool fast, u64 param)
@@ -1296,8 +1296,10 @@
if (param & ~KVM_HYPERV_CONN_ID_MASK)
return HV_STATUS_INVALID_HYPERCALL_INPUT;
- /* conn_to_evt is protected by vcpu->kvm->srcu */
+ /* the eventfd is protected by vcpu->kvm->srcu, but conn_to_evt isn't */
+ rcu_read_lock();
eventfd = idr_find(&vcpu->kvm->arch.hyperv.conn_to_evt, param);
+ rcu_read_unlock();
if (!eventfd)
return HV_STATUS_INVALID_PORT_ID;
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index c766880..3f16965 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -1494,6 +1494,12 @@
SECONDARY_EXEC_ENABLE_VMFUNC;
}
+static bool vmx_umip_emulated(void)
+{
+ return vmcs_config.cpu_based_2nd_exec_ctrl &
+ SECONDARY_EXEC_DESC;
+}
+
static inline bool report_flexpriority(void)
{
return flexpriority_enabled;
@@ -4761,14 +4767,16 @@
else
hw_cr4 |= KVM_PMODE_VM_CR4_ALWAYS_ON;
- if ((cr4 & X86_CR4_UMIP) && !boot_cpu_has(X86_FEATURE_UMIP)) {
- vmcs_set_bits(SECONDARY_VM_EXEC_CONTROL,
- SECONDARY_EXEC_DESC);
- hw_cr4 &= ~X86_CR4_UMIP;
- } else if (!is_guest_mode(vcpu) ||
- !nested_cpu_has2(get_vmcs12(vcpu), SECONDARY_EXEC_DESC))
- vmcs_clear_bits(SECONDARY_VM_EXEC_CONTROL,
+ if (!boot_cpu_has(X86_FEATURE_UMIP) && vmx_umip_emulated()) {
+ if (cr4 & X86_CR4_UMIP) {
+ vmcs_set_bits(SECONDARY_VM_EXEC_CONTROL,
SECONDARY_EXEC_DESC);
+ hw_cr4 &= ~X86_CR4_UMIP;
+ } else if (!is_guest_mode(vcpu) ||
+ !nested_cpu_has2(get_vmcs12(vcpu), SECONDARY_EXEC_DESC))
+ vmcs_clear_bits(SECONDARY_VM_EXEC_CONTROL,
+ SECONDARY_EXEC_DESC);
+ }
if (cr4 & X86_CR4_VMXE) {
/*
@@ -9497,12 +9505,6 @@
SECONDARY_EXEC_XSAVES;
}
-static bool vmx_umip_emulated(void)
-{
- return vmcs_config.cpu_based_2nd_exec_ctrl &
- SECONDARY_EXEC_DESC;
-}
-
static void vmx_recover_nmi_blocking(struct vcpu_vmx *vmx)
{
u32 exit_intr_info;
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 51ecd38..59371de 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -114,7 +114,7 @@
static bool __read_mostly report_ignored_msrs = true;
module_param(report_ignored_msrs, bool, S_IRUGO | S_IWUSR);
-unsigned int min_timer_period_us = 500;
+unsigned int min_timer_period_us = 200;
module_param(min_timer_period_us, uint, S_IRUGO | S_IWUSR);
static bool __read_mostly kvmclock_periodic_sync = true;
@@ -843,7 +843,10 @@
int kvm_set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3)
{
#ifdef CONFIG_X86_64
- cr3 &= ~CR3_PCID_INVD;
+ bool pcid_enabled = kvm_read_cr4_bits(vcpu, X86_CR4_PCIDE);
+
+ if (pcid_enabled)
+ cr3 &= ~CR3_PCID_INVD;
#endif
if (cr3 == kvm_read_cr3(vcpu) && !pdptrs_changed(vcpu)) {
@@ -6671,12 +6674,13 @@
int kvm_emulate_hypercall(struct kvm_vcpu *vcpu)
{
unsigned long nr, a0, a1, a2, a3, ret;
- int op_64_bit, r;
+ int op_64_bit;
- r = kvm_skip_emulated_instruction(vcpu);
-
- if (kvm_hv_hypercall_enabled(vcpu->kvm))
- return kvm_hv_hypercall(vcpu);
+ if (kvm_hv_hypercall_enabled(vcpu->kvm)) {
+ if (!kvm_hv_hypercall(vcpu))
+ return 0;
+ goto out;
+ }
nr = kvm_register_read(vcpu, VCPU_REGS_RAX);
a0 = kvm_register_read(vcpu, VCPU_REGS_RBX);
@@ -6697,7 +6701,7 @@
if (kvm_x86_ops->get_cpl(vcpu) != 0) {
ret = -KVM_EPERM;
- goto out;
+ goto out_error;
}
switch (nr) {
@@ -6717,12 +6721,14 @@
ret = -KVM_ENOSYS;
break;
}
-out:
+out_error:
if (!op_64_bit)
ret = (u32)ret;
kvm_register_write(vcpu, VCPU_REGS_RAX, ret);
+
+out:
++vcpu->stat.hypercalls;
- return r;
+ return kvm_skip_emulated_instruction(vcpu);
}
EXPORT_SYMBOL_GPL(kvm_emulate_hypercall);
diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
index d33e7db..2d76106 100644
--- a/arch/x86/xen/mmu.c
+++ b/arch/x86/xen/mmu.c
@@ -42,13 +42,11 @@
}
EXPORT_SYMBOL_GPL(arbitrary_virt_to_machine);
-static void xen_flush_tlb_all(void)
+static noinline void xen_flush_tlb_all(void)
{
struct mmuext_op *op;
struct multicall_space mcs;
- trace_xen_mmu_flush_tlb_all(0);
-
preempt_disable();
mcs = xen_mc_entry(sizeof(*op));
diff --git a/arch/x86/xen/mmu_pv.c b/arch/x86/xen/mmu_pv.c
index 486c0a3..2c30cab 100644
--- a/arch/x86/xen/mmu_pv.c
+++ b/arch/x86/xen/mmu_pv.c
@@ -1310,13 +1310,11 @@
return this_cpu_read(xen_vcpu_info.arch.cr2);
}
-static void xen_flush_tlb(void)
+static noinline void xen_flush_tlb(void)
{
struct mmuext_op *op;
struct multicall_space mcs;
- trace_xen_mmu_flush_tlb(0);
-
preempt_disable();
mcs = xen_mc_entry(sizeof(*op));
diff --git a/drivers/acpi/acpica/acnamesp.h b/drivers/acpi/acpica/acnamesp.h
index 514aaf9..3825df9 100644
--- a/drivers/acpi/acpica/acnamesp.h
+++ b/drivers/acpi/acpica/acnamesp.h
@@ -56,6 +56,10 @@
acpi_status acpi_ns_initialize_devices(u32 flags);
+acpi_status
+acpi_ns_init_one_package(acpi_handle obj_handle,
+ u32 level, void *context, void **return_value);
+
/*
* nsload - Namespace loading
*/
diff --git a/drivers/acpi/acpica/exconfig.c b/drivers/acpi/acpica/exconfig.c
index 99d92cb..f85c6f3 100644
--- a/drivers/acpi/acpica/exconfig.c
+++ b/drivers/acpi/acpica/exconfig.c
@@ -174,6 +174,13 @@
return_ACPI_STATUS(status);
}
+ /* Complete the initialization/resolution of package objects */
+
+ status = acpi_ns_walk_namespace(ACPI_TYPE_PACKAGE, ACPI_ROOT_OBJECT,
+ ACPI_UINT32_MAX, 0,
+ acpi_ns_init_one_package, NULL, NULL,
+ NULL);
+
/* Parameter Data (optional) */
if (parameter_node) {
@@ -430,6 +437,13 @@
return_ACPI_STATUS(status);
}
+ /* Complete the initialization/resolution of package objects */
+
+ status = acpi_ns_walk_namespace(ACPI_TYPE_PACKAGE, ACPI_ROOT_OBJECT,
+ ACPI_UINT32_MAX, 0,
+ acpi_ns_init_one_package, NULL, NULL,
+ NULL);
+
/* Store the ddb_handle into the Target operand */
status = acpi_ex_store(ddb_handle, target, walk_state);
diff --git a/drivers/acpi/acpica/nsinit.c b/drivers/acpi/acpica/nsinit.c
index 77f2b5f..d77257d 100644
--- a/drivers/acpi/acpica/nsinit.c
+++ b/drivers/acpi/acpica/nsinit.c
@@ -242,6 +242,58 @@
/*******************************************************************************
*
+ * FUNCTION: acpi_ns_init_one_package
+ *
+ * PARAMETERS: obj_handle - Node
+ * level - Current nesting level
+ * context - Not used
+ * return_value - Not used
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Callback from acpi_walk_namespace. Invoked for every package
+ * within the namespace. Used during dynamic load of an SSDT.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ns_init_one_package(acpi_handle obj_handle,
+ u32 level, void *context, void **return_value)
+{
+ acpi_status status;
+ union acpi_operand_object *obj_desc;
+ struct acpi_namespace_node *node =
+ (struct acpi_namespace_node *)obj_handle;
+
+ obj_desc = acpi_ns_get_attached_object(node);
+ if (!obj_desc) {
+ return (AE_OK);
+ }
+
+ /* Exit if package is already initialized */
+
+ if (obj_desc->package.flags & AOPOBJ_DATA_VALID) {
+ return (AE_OK);
+ }
+
+ status = acpi_ds_get_package_arguments(obj_desc);
+ if (ACPI_FAILURE(status)) {
+ return (AE_OK);
+ }
+
+ status =
+ acpi_ut_walk_package_tree(obj_desc, NULL,
+ acpi_ds_init_package_element, NULL);
+ if (ACPI_FAILURE(status)) {
+ return (AE_OK);
+ }
+
+ obj_desc->package.flags |= AOPOBJ_DATA_VALID;
+ return (AE_OK);
+}
+
+/*******************************************************************************
+ *
* FUNCTION: acpi_ns_init_one_object
*
* PARAMETERS: obj_handle - Node
@@ -360,27 +412,11 @@
case ACPI_TYPE_PACKAGE:
+ /* Complete the initialization/resolution of the package object */
+
info->package_init++;
- status = acpi_ds_get_package_arguments(obj_desc);
- if (ACPI_FAILURE(status)) {
- break;
- }
-
- ACPI_DEBUG_PRINT_RAW((ACPI_DB_PARSE,
- "%s: Completing resolution of Package elements\n",
- ACPI_GET_FUNCTION_NAME));
-
- /*
- * Resolve all named references in package objects (and all
- * sub-packages). This action has been deferred until the entire
- * namespace has been loaded, in order to support external and
- * forward references from individual package elements (05/2017).
- */
- status = acpi_ut_walk_package_tree(obj_desc, NULL,
- acpi_ds_init_package_element,
- NULL);
-
- obj_desc->package.flags |= AOPOBJ_DATA_VALID;
+ status =
+ acpi_ns_init_one_package(obj_handle, level, NULL, NULL);
break;
default:
diff --git a/drivers/clk/Kconfig b/drivers/clk/Kconfig
index 41492e9..34968a3 100644
--- a/drivers/clk/Kconfig
+++ b/drivers/clk/Kconfig
@@ -266,15 +266,13 @@
Support for stm32mp157 SoC family clocks
config COMMON_CLK_STM32F
- bool "Clock driver for stm32f4 and stm32f7 SoC families"
- depends on MACH_STM32F429 || MACH_STM32F469 || MACH_STM32F746
+ def_bool COMMON_CLK && (MACH_STM32F429 || MACH_STM32F469 || MACH_STM32F746)
help
---help---
Support for stm32f4 and stm32f7 SoC families clocks
config COMMON_CLK_STM32H7
- bool "Clock driver for stm32h7 SoC family"
- depends on MACH_STM32H743
+ def_bool COMMON_CLK && MACH_STM32H743
help
---help---
Support for stm32h7 SoC family clocks
diff --git a/drivers/clk/imx/clk-imx6ul.c b/drivers/clk/imx/clk-imx6ul.c
index 114ecbb..1232011 100644
--- a/drivers/clk/imx/clk-imx6ul.c
+++ b/drivers/clk/imx/clk-imx6ul.c
@@ -464,7 +464,7 @@
clk_set_rate(clks[IMX6UL_CLK_AHB], 99000000);
/* Change periph_pre clock to pll2_bus to adjust AXI rate to 264MHz */
- clk_set_parent(clks[IMX6UL_CLK_PERIPH_CLK2_SEL], clks[IMX6UL_CLK_PLL3_USB_OTG]);
+ clk_set_parent(clks[IMX6UL_CLK_PERIPH_CLK2_SEL], clks[IMX6UL_CLK_OSC]);
clk_set_parent(clks[IMX6UL_CLK_PERIPH], clks[IMX6UL_CLK_PERIPH_CLK2]);
clk_set_parent(clks[IMX6UL_CLK_PERIPH_PRE], clks[IMX6UL_CLK_PLL2_BUS]);
clk_set_parent(clks[IMX6UL_CLK_PERIPH], clks[IMX6UL_CLK_PERIPH_PRE]);
diff --git a/drivers/cpufreq/Kconfig.arm b/drivers/cpufreq/Kconfig.arm
index de55c7d..96b35b8 100644
--- a/drivers/cpufreq/Kconfig.arm
+++ b/drivers/cpufreq/Kconfig.arm
@@ -20,7 +20,7 @@
config ARM_ARMADA_37XX_CPUFREQ
tristate "Armada 37xx CPUFreq support"
- depends on ARCH_MVEBU
+ depends on ARCH_MVEBU && CPUFREQ_DT
help
This adds the CPUFreq driver support for Marvell Armada 37xx SoCs.
The Armada 37xx PMU supports 4 frequency and VDD levels.
diff --git a/drivers/dma/qcom/bam_dma.c b/drivers/dma/qcom/bam_dma.c
index d29275b..4a828c1 100644
--- a/drivers/dma/qcom/bam_dma.c
+++ b/drivers/dma/qcom/bam_dma.c
@@ -524,6 +524,14 @@
return 0;
}
+static int bam_pm_runtime_get_sync(struct device *dev)
+{
+ if (pm_runtime_enabled(dev))
+ return pm_runtime_get_sync(dev);
+
+ return 0;
+}
+
/**
* bam_free_chan - Frees dma resources associated with specific channel
* @chan: specified channel
@@ -539,7 +547,7 @@
unsigned long flags;
int ret;
- ret = pm_runtime_get_sync(bdev->dev);
+ ret = bam_pm_runtime_get_sync(bdev->dev);
if (ret < 0)
return;
@@ -720,7 +728,7 @@
unsigned long flag;
int ret;
- ret = pm_runtime_get_sync(bdev->dev);
+ ret = bam_pm_runtime_get_sync(bdev->dev);
if (ret < 0)
return ret;
@@ -746,7 +754,7 @@
unsigned long flag;
int ret;
- ret = pm_runtime_get_sync(bdev->dev);
+ ret = bam_pm_runtime_get_sync(bdev->dev);
if (ret < 0)
return ret;
@@ -852,7 +860,7 @@
if (srcs & P_IRQ)
tasklet_schedule(&bdev->task);
- ret = pm_runtime_get_sync(bdev->dev);
+ ret = bam_pm_runtime_get_sync(bdev->dev);
if (ret < 0)
return ret;
@@ -969,7 +977,7 @@
if (!vd)
return;
- ret = pm_runtime_get_sync(bdev->dev);
+ ret = bam_pm_runtime_get_sync(bdev->dev);
if (ret < 0)
return;
diff --git a/drivers/firmware/arm_scmi/driver.c b/drivers/firmware/arm_scmi/driver.c
index 14b1471..2455be8 100644
--- a/drivers/firmware/arm_scmi/driver.c
+++ b/drivers/firmware/arm_scmi/driver.c
@@ -778,6 +778,7 @@
if (scmi_mbox_chan_setup(info, &sdev->dev, prot_id)) {
dev_err(&sdev->dev, "failed to setup transport\n");
scmi_device_destroy(sdev);
+ return;
}
/* setup handle now as the transport is ready */
diff --git a/drivers/firmware/efi/libstub/arm64-stub.c b/drivers/firmware/efi/libstub/arm64-stub.c
index b9bd827..1b4d465 100644
--- a/drivers/firmware/efi/libstub/arm64-stub.c
+++ b/drivers/firmware/efi/libstub/arm64-stub.c
@@ -98,6 +98,16 @@
(phys_seed >> 32) & mask : TEXT_OFFSET;
/*
+ * With CONFIG_RANDOMIZE_TEXT_OFFSET=y, TEXT_OFFSET may not
+ * be a multiple of EFI_KIMG_ALIGN, and we must ensure that
+ * we preserve the misalignment of 'offset' relative to
+ * EFI_KIMG_ALIGN so that statically allocated objects whose
+ * alignment exceeds PAGE_SIZE appear correctly aligned in
+ * memory.
+ */
+ offset |= TEXT_OFFSET % EFI_KIMG_ALIGN;
+
+ /*
* If KASLR is enabled, and we have some randomness available,
* locate the kernel at a randomized offset in physical memory.
*/
diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
index a1b9338..c2c21d8 100644
--- a/drivers/gpu/drm/drm_drv.c
+++ b/drivers/gpu/drm/drm_drv.c
@@ -716,7 +716,7 @@
if (!minor)
return;
- name = kasprintf(GFP_KERNEL, "controlD%d", minor->index);
+ name = kasprintf(GFP_KERNEL, "controlD%d", minor->index + 64);
if (!name)
return;
diff --git a/drivers/gpu/drm/drm_dumb_buffers.c b/drivers/gpu/drm/drm_dumb_buffers.c
index 39ac15c..9e2ae02 100644
--- a/drivers/gpu/drm/drm_dumb_buffers.c
+++ b/drivers/gpu/drm/drm_dumb_buffers.c
@@ -65,12 +65,13 @@
return -EINVAL;
/* overflow checks for 32bit size calculations */
- /* NOTE: DIV_ROUND_UP() can overflow */
+ if (args->bpp > U32_MAX - 8)
+ return -EINVAL;
cpp = DIV_ROUND_UP(args->bpp, 8);
- if (!cpp || cpp > 0xffffffffU / args->width)
+ if (cpp > U32_MAX / args->width)
return -EINVAL;
stride = cpp * args->width;
- if (args->height > 0xffffffffU / stride)
+ if (args->height > U32_MAX / stride)
return -EINVAL;
/* test for wrap-around */
diff --git a/drivers/gpu/drm/drm_file.c b/drivers/gpu/drm/drm_file.c
index e394799..6d9b945 100644
--- a/drivers/gpu/drm/drm_file.c
+++ b/drivers/gpu/drm/drm_file.c
@@ -212,6 +212,7 @@
return -ENOMEM;
filp->private_data = priv;
+ filp->f_mode |= FMODE_UNSIGNED_OFFSET;
priv->filp = filp;
priv->pid = get_pid(task_pid(current));
priv->minor = minor;
diff --git a/drivers/gpu/drm/i915/i915_gem_userptr.c b/drivers/gpu/drm/i915/i915_gem_userptr.c
index d596a83..854bd51 100644
--- a/drivers/gpu/drm/i915/i915_gem_userptr.c
+++ b/drivers/gpu/drm/i915/i915_gem_userptr.c
@@ -778,6 +778,9 @@
I915_USERPTR_UNSYNCHRONIZED))
return -EINVAL;
+ if (!args->user_size)
+ return -EINVAL;
+
if (offset_in_page(args->user_ptr | args->user_size))
return -EINVAL;
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index e6a8c0e..8a69a92 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -7326,6 +7326,9 @@
#define SLICE_ECO_CHICKEN0 _MMIO(0x7308)
#define PIXEL_MASK_CAMMING_DISABLE (1 << 14)
+#define GEN9_WM_CHICKEN3 _MMIO(0x5588)
+#define GEN9_FACTOR_IN_CLR_VAL_HIZ (1 << 9)
+
/* WaCatErrorRejectionIssue */
#define GEN7_SQ_CHICKEN_MBCUNIT_CONFIG _MMIO(0x9030)
#define GEN7_SQ_CHICKEN_MBCUNIT_SQINTMOB (1<<11)
diff --git a/drivers/gpu/drm/i915/intel_engine_cs.c b/drivers/gpu/drm/i915/intel_engine_cs.c
index 4ba139c..f7c2582 100644
--- a/drivers/gpu/drm/i915/intel_engine_cs.c
+++ b/drivers/gpu/drm/i915/intel_engine_cs.c
@@ -1149,6 +1149,10 @@
WA_SET_FIELD_MASKED(GEN8_CS_CHICKEN1, GEN9_PREEMPT_GPGPU_LEVEL_MASK,
GEN9_PREEMPT_GPGPU_COMMAND_LEVEL);
+ /* WaClearHIZ_WM_CHICKEN3:bxt,glk */
+ if (IS_GEN9_LP(dev_priv))
+ WA_SET_BIT_MASKED(GEN9_WM_CHICKEN3, GEN9_FACTOR_IN_CLR_VAL_HIZ);
+
/* WaVFEStateAfterPipeControlwithMediaStateClear:skl,bxt,glk,cfl */
ret = wa_ring_whitelist_reg(engine, GEN9_CTX_PREEMPT_REG);
if (ret)
diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index e3a5f67..8704f7f 100644
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -884,6 +884,7 @@
head = execlists->csb_head;
tail = READ_ONCE(buf[write_idx]);
+ rmb(); /* Hopefully paired with a wmb() in HW */
}
GEM_TRACE("%s cs-irq head=%d [%d%s], tail=%d [%d%s]\n",
engine->name,
diff --git a/drivers/gpu/drm/vc4/vc4_drv.c b/drivers/gpu/drm/vc4/vc4_drv.c
index 94b99c9..7c95ed5 100644
--- a/drivers/gpu/drm/vc4/vc4_drv.c
+++ b/drivers/gpu/drm/vc4/vc4_drv.c
@@ -130,6 +130,7 @@
struct vc4_file *vc4file = file->driver_priv;
vc4_perfmon_close_file(vc4file);
+ kfree(vc4file);
}
static const struct vm_operations_struct vc4_vm_ops = {
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_scrn.c b/drivers/gpu/drm/vmwgfx/vmwgfx_scrn.c
index 648f812..3d667e9 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_scrn.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_scrn.c
@@ -482,6 +482,8 @@
return ret;
}
+ vps->dmabuf_size = size;
+
/*
* TTM already thinks the buffer is pinned, but make sure the
* pin_count is upped.
diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index f249a44..6ec307c 100644
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -272,7 +272,7 @@
config SENSORS_K10TEMP
tristate "AMD Family 10h+ temperature sensor"
- depends on X86 && PCI
+ depends on X86 && PCI && AMD_NB
help
If you say yes here you get support for the temperature
sensor(s) inside your CPU. Supported are later revisions of
diff --git a/drivers/hwmon/k10temp.c b/drivers/hwmon/k10temp.c
index d2cc55e..3b73dee 100644
--- a/drivers/hwmon/k10temp.c
+++ b/drivers/hwmon/k10temp.c
@@ -23,6 +23,7 @@
#include <linux/init.h>
#include <linux/module.h>
#include <linux/pci.h>
+#include <asm/amd_nb.h>
#include <asm/processor.h>
MODULE_DESCRIPTION("AMD Family 10h+ CPU core temperature monitor");
@@ -40,8 +41,8 @@
#define PCI_DEVICE_ID_AMD_17H_DF_F3 0x1463
#endif
-#ifndef PCI_DEVICE_ID_AMD_17H_RR_NB
-#define PCI_DEVICE_ID_AMD_17H_RR_NB 0x15d0
+#ifndef PCI_DEVICE_ID_AMD_17H_M10H_DF_F3
+#define PCI_DEVICE_ID_AMD_17H_M10H_DF_F3 0x15eb
#endif
/* CPUID function 0x80000001, ebx */
@@ -63,10 +64,12 @@
#define NB_CAP_HTC 0x00000400
/*
- * For F15h M60h, functionality of REG_REPORTED_TEMPERATURE
- * has been moved to D0F0xBC_xD820_0CA4 [Reported Temperature
- * Control]
+ * For F15h M60h and M70h, REG_HARDWARE_THERMAL_CONTROL
+ * and REG_REPORTED_TEMPERATURE have been moved to
+ * D0F0xBC_xD820_0C64 [Hardware Temperature Control]
+ * D0F0xBC_xD820_0CA4 [Reported Temperature Control]
*/
+#define F15H_M60H_HARDWARE_TEMP_CTRL_OFFSET 0xd8200c64
#define F15H_M60H_REPORTED_TEMP_CTRL_OFFSET 0xd8200ca4
/* F17h M01h Access througn SMN */
@@ -74,6 +77,7 @@
struct k10temp_data {
struct pci_dev *pdev;
+ void (*read_htcreg)(struct pci_dev *pdev, u32 *regval);
void (*read_tempreg)(struct pci_dev *pdev, u32 *regval);
int temp_offset;
u32 temp_adjust_mask;
@@ -98,6 +102,11 @@
{ 0x17, "AMD Ryzen Threadripper 1910", 10000 },
};
+static void read_htcreg_pci(struct pci_dev *pdev, u32 *regval)
+{
+ pci_read_config_dword(pdev, REG_HARDWARE_THERMAL_CONTROL, regval);
+}
+
static void read_tempreg_pci(struct pci_dev *pdev, u32 *regval)
{
pci_read_config_dword(pdev, REG_REPORTED_TEMPERATURE, regval);
@@ -114,6 +123,12 @@
mutex_unlock(&nb_smu_ind_mutex);
}
+static void read_htcreg_nb_f15(struct pci_dev *pdev, u32 *regval)
+{
+ amd_nb_index_read(pdev, PCI_DEVFN(0, 0), 0xb8,
+ F15H_M60H_HARDWARE_TEMP_CTRL_OFFSET, regval);
+}
+
static void read_tempreg_nb_f15(struct pci_dev *pdev, u32 *regval)
{
amd_nb_index_read(pdev, PCI_DEVFN(0, 0), 0xb8,
@@ -122,8 +137,8 @@
static void read_tempreg_nb_f17(struct pci_dev *pdev, u32 *regval)
{
- amd_nb_index_read(pdev, PCI_DEVFN(0, 0), 0x60,
- F17H_M01H_REPORTED_TEMP_CTRL_OFFSET, regval);
+ amd_smn_read(amd_pci_dev_to_node_id(pdev),
+ F17H_M01H_REPORTED_TEMP_CTRL_OFFSET, regval);
}
static ssize_t temp1_input_show(struct device *dev,
@@ -160,8 +175,7 @@
u32 regval;
int value;
- pci_read_config_dword(data->pdev,
- REG_HARDWARE_THERMAL_CONTROL, ®val);
+ data->read_htcreg(data->pdev, ®val);
value = ((regval >> 16) & 0x7f) * 500 + 52000;
if (show_hyst)
value -= ((regval >> 24) & 0xf) * 500;
@@ -181,13 +195,18 @@
struct pci_dev *pdev = data->pdev;
if (index >= 2) {
- u32 reg_caps, reg_htc;
+ u32 reg;
+
+ if (!data->read_htcreg)
+ return 0;
pci_read_config_dword(pdev, REG_NORTHBRIDGE_CAPABILITIES,
- ®_caps);
- pci_read_config_dword(pdev, REG_HARDWARE_THERMAL_CONTROL,
- ®_htc);
- if (!(reg_caps & NB_CAP_HTC) || !(reg_htc & HTC_ENABLE))
+ ®);
+ if (!(reg & NB_CAP_HTC))
+ return 0;
+
+ data->read_htcreg(data->pdev, ®);
+ if (!(reg & HTC_ENABLE))
return 0;
}
return attr->mode;
@@ -268,11 +287,13 @@
if (boot_cpu_data.x86 == 0x15 && (boot_cpu_data.x86_model == 0x60 ||
boot_cpu_data.x86_model == 0x70)) {
+ data->read_htcreg = read_htcreg_nb_f15;
data->read_tempreg = read_tempreg_nb_f15;
} else if (boot_cpu_data.x86 == 0x17) {
data->temp_adjust_mask = 0x80000;
data->read_tempreg = read_tempreg_nb_f17;
} else {
+ data->read_htcreg = read_htcreg_pci;
data->read_tempreg = read_tempreg_pci;
}
@@ -302,7 +323,7 @@
{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_16H_NB_F3) },
{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_16H_M30H_NB_F3) },
{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_17H_DF_F3) },
- { PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_17H_RR_NB) },
+ { PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_17H_M10H_DF_F3) },
{}
};
MODULE_DEVICE_TABLE(pci, k10temp_id_table);
diff --git a/drivers/i2c/busses/i2c-designware-master.c b/drivers/i2c/busses/i2c-designware-master.c
index fd36c39..0cdba29 100644
--- a/drivers/i2c/busses/i2c-designware-master.c
+++ b/drivers/i2c/busses/i2c-designware-master.c
@@ -209,7 +209,10 @@
i2c_dw_disable_int(dev);
/* Enable the adapter */
- __i2c_dw_enable_and_wait(dev, true);
+ __i2c_dw_enable(dev, true);
+
+ /* Dummy read to avoid the register getting stuck on Bay Trail */
+ dw_readl(dev, DW_IC_ENABLE_STATUS);
/* Clear and enable interrupts */
dw_readl(dev, DW_IC_CLR_INTR);
diff --git a/drivers/i2c/busses/i2c-pmcmsp.c b/drivers/i2c/busses/i2c-pmcmsp.c
index 2aa0e83..dae8ac6 100644
--- a/drivers/i2c/busses/i2c-pmcmsp.c
+++ b/drivers/i2c/busses/i2c-pmcmsp.c
@@ -564,10 +564,10 @@
* TODO: We could potentially loop and retry in the case
* of MSP_TWI_XFER_TIMEOUT.
*/
- return -1;
+ return -EIO;
}
- return 0;
+ return num;
}
static u32 pmcmsptwi_i2c_func(struct i2c_adapter *adapter)
diff --git a/drivers/i2c/busses/i2c-viperboard.c b/drivers/i2c/busses/i2c-viperboard.c
index e4be86b..7235c73 100644
--- a/drivers/i2c/busses/i2c-viperboard.c
+++ b/drivers/i2c/busses/i2c-viperboard.c
@@ -337,7 +337,7 @@
}
mutex_unlock(&vb->lock);
}
- return 0;
+ return num;
error:
mutex_unlock(&vb->lock);
return error;
diff --git a/drivers/i2c/i2c-core-acpi.c b/drivers/i2c/i2c-core-acpi.c
index a9126b3..7c3b474 100644
--- a/drivers/i2c/i2c-core-acpi.c
+++ b/drivers/i2c/i2c-core-acpi.c
@@ -445,10 +445,17 @@
msgs[1].buf = buffer;
ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
- if (ret < 0)
- dev_err(&client->adapter->dev, "i2c read failed\n");
- else
+ if (ret < 0) {
+ /* Getting a NACK is unfortunately normal with some DSTDs */
+ if (ret == -EREMOTEIO)
+ dev_dbg(&client->adapter->dev, "i2c read %d bytes from client@%#x starting at reg %#x failed, error: %d\n",
+ data_len, client->addr, cmd, ret);
+ else
+ dev_err(&client->adapter->dev, "i2c read %d bytes from client@%#x starting at reg %#x failed, error: %d\n",
+ data_len, client->addr, cmd, ret);
+ } else {
memcpy(data, buffer, data_len);
+ }
kfree(buffer);
return ret;
diff --git a/drivers/md/bcache/debug.c b/drivers/md/bcache/debug.c
index 4e63c6f..d030ce3 100644
--- a/drivers/md/bcache/debug.c
+++ b/drivers/md/bcache/debug.c
@@ -250,7 +250,9 @@
int __init bch_debug_init(struct kobject *kobj)
{
- bcache_debug = debugfs_create_dir("bcache", NULL);
+ if (!IS_ENABLED(CONFIG_DEBUG_FS))
+ return 0;
+ bcache_debug = debugfs_create_dir("bcache", NULL);
return IS_ERR_OR_NULL(bcache_debug);
}
diff --git a/drivers/misc/cxl/cxl.h b/drivers/misc/cxl/cxl.h
index a4c9c82..918d4fb 100644
--- a/drivers/misc/cxl/cxl.h
+++ b/drivers/misc/cxl/cxl.h
@@ -717,6 +717,7 @@
bool perst_select_user;
bool perst_same_image;
bool psl_timebase_synced;
+ bool tunneled_ops_supported;
/*
* number of contexts mapped on to this card. Possible values are:
diff --git a/drivers/misc/cxl/pci.c b/drivers/misc/cxl/pci.c
index 83f1d08..4d6736f 100644
--- a/drivers/misc/cxl/pci.c
+++ b/drivers/misc/cxl/pci.c
@@ -1742,6 +1742,15 @@
/* Required for devices using CAPP DMA mode, harmless for others */
pci_set_master(dev);
+ adapter->tunneled_ops_supported = false;
+
+ if (cxl_is_power9()) {
+ if (pnv_pci_set_tunnel_bar(dev, 0x00020000E0000000ull, 1))
+ dev_info(&dev->dev, "Tunneled operations unsupported\n");
+ else
+ adapter->tunneled_ops_supported = true;
+ }
+
if ((rc = pnv_phb_to_cxl_mode(dev, adapter->native->sl_ops->capi_mode)))
goto err;
@@ -1768,6 +1777,9 @@
{
struct pci_dev *pdev = to_pci_dev(adapter->dev.parent);
+ if (cxl_is_power9())
+ pnv_pci_set_tunnel_bar(pdev, 0x00020000E0000000ull, 0);
+
cxl_native_release_psl_err_irq(adapter);
cxl_unmap_adapter_regs(adapter);
diff --git a/drivers/misc/cxl/sysfs.c b/drivers/misc/cxl/sysfs.c
index 95285b7..4b5a4c5 100644
--- a/drivers/misc/cxl/sysfs.c
+++ b/drivers/misc/cxl/sysfs.c
@@ -78,6 +78,15 @@
return scnprintf(buf, PAGE_SIZE, "%i\n", adapter->psl_timebase_synced);
}
+static ssize_t tunneled_ops_supported_show(struct device *device,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct cxl *adapter = to_cxl_adapter(device);
+
+ return scnprintf(buf, PAGE_SIZE, "%i\n", adapter->tunneled_ops_supported);
+}
+
static ssize_t reset_adapter_store(struct device *device,
struct device_attribute *attr,
const char *buf, size_t count)
@@ -183,6 +192,7 @@
__ATTR_RO(base_image),
__ATTR_RO(image_loaded),
__ATTR_RO(psl_timebase_synced),
+ __ATTR_RO(tunneled_ops_supported),
__ATTR_RW(load_image_on_perst),
__ATTR_RW(perst_reloads_same_image),
__ATTR(reset, S_IWUSR, NULL, reset_adapter_store),
diff --git a/drivers/misc/eeprom/at24.c b/drivers/misc/eeprom/at24.c
index 0c125f2..33053b0 100644
--- a/drivers/misc/eeprom/at24.c
+++ b/drivers/misc/eeprom/at24.c
@@ -518,7 +518,7 @@
if (of_node && of_match_device(at24_of_match, dev))
cdata = of_device_get_match_data(dev);
else if (id)
- cdata = (void *)&id->driver_data;
+ cdata = (void *)id->driver_data;
else
cdata = acpi_device_get_match_data(dev);
diff --git a/drivers/mtd/nand/raw/marvell_nand.c b/drivers/mtd/nand/raw/marvell_nand.c
index db5ec4e..ebb1d14 100644
--- a/drivers/mtd/nand/raw/marvell_nand.c
+++ b/drivers/mtd/nand/raw/marvell_nand.c
@@ -1194,11 +1194,13 @@
NDCB0_CMD2(NAND_CMD_READSTART);
/*
- * Trigger the naked read operation only on the last chunk.
- * Otherwise, use monolithic read.
+ * Trigger the monolithic read on the first chunk, then naked read on
+ * intermediate chunks and finally a last naked read on the last chunk.
*/
- if (lt->nchunks == 1 || (chunk < lt->nchunks - 1))
+ if (chunk == 0)
nfc_op.ndcb[0] |= NDCB0_CMD_XTYPE(XTYPE_MONOLITHIC_RW);
+ else if (chunk < lt->nchunks - 1)
+ nfc_op.ndcb[0] |= NDCB0_CMD_XTYPE(XTYPE_NAKED_RW);
else
nfc_op.ndcb[0] |= NDCB0_CMD_XTYPE(XTYPE_LAST_NAKED_RW);
diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig
index bc309c5..566644b 100644
--- a/drivers/platform/x86/Kconfig
+++ b/drivers/platform/x86/Kconfig
@@ -168,8 +168,8 @@
depends on DMI
depends on INPUT
depends on ACPI_VIDEO || ACPI_VIDEO = n
+ depends on DELL_SMBIOS
select DELL_WMI_DESCRIPTOR
- select DELL_SMBIOS
select INPUT_SPARSEKMAP
---help---
Say Y here if you want to support WMI-based hotkeys on Dell laptops.
diff --git a/drivers/reset/reset-uniphier.c b/drivers/reset/reset-uniphier.c
index 360e06b..ac18f2f 100644
--- a/drivers/reset/reset-uniphier.c
+++ b/drivers/reset/reset-uniphier.c
@@ -110,7 +110,7 @@
UNIPHIER_RESETX(4, 0x200c, 2), /* eMMC */
UNIPHIER_RESETX(6, 0x200c, 6), /* Ether */
UNIPHIER_RESETX(8, 0x200c, 8), /* STDMAC (HSC) */
- UNIPHIER_RESETX(12, 0x200c, 5), /* GIO (PCIe, USB3) */
+ UNIPHIER_RESETX(14, 0x200c, 5), /* USB30 */
UNIPHIER_RESETX(16, 0x200c, 12), /* USB30-PHY0 */
UNIPHIER_RESETX(17, 0x200c, 13), /* USB30-PHY1 */
UNIPHIER_RESETX(18, 0x200c, 14), /* USB30-PHY2 */
@@ -127,8 +127,8 @@
UNIPHIER_RESETX(6, 0x200c, 9), /* Ether0 */
UNIPHIER_RESETX(7, 0x200c, 10), /* Ether1 */
UNIPHIER_RESETX(8, 0x200c, 12), /* STDMAC */
- UNIPHIER_RESETX(12, 0x200c, 4), /* USB30 link (GIO0) */
- UNIPHIER_RESETX(13, 0x200c, 5), /* USB31 link (GIO1) */
+ UNIPHIER_RESETX(12, 0x200c, 4), /* USB30 link */
+ UNIPHIER_RESETX(13, 0x200c, 5), /* USB31 link */
UNIPHIER_RESETX(16, 0x200c, 16), /* USB30-PHY0 */
UNIPHIER_RESETX(17, 0x200c, 18), /* USB30-PHY1 */
UNIPHIER_RESETX(18, 0x200c, 20), /* USB30-PHY2 */
diff --git a/drivers/s390/cio/qdio_setup.c b/drivers/s390/cio/qdio_setup.c
index 439991d..4c14ce4 100644
--- a/drivers/s390/cio/qdio_setup.c
+++ b/drivers/s390/cio/qdio_setup.c
@@ -141,7 +141,7 @@
int i;
for (i = 0; i < nr_queues; i++) {
- q = kmem_cache_alloc(qdio_q_cache, GFP_KERNEL);
+ q = kmem_cache_zalloc(qdio_q_cache, GFP_KERNEL);
if (!q)
return -ENOMEM;
@@ -456,7 +456,6 @@
{
struct ciw *ciw;
struct qdio_irq *irq_ptr = init_data->cdev->private->qdio_data;
- int rc;
memset(&irq_ptr->qib, 0, sizeof(irq_ptr->qib));
memset(&irq_ptr->siga_flag, 0, sizeof(irq_ptr->siga_flag));
@@ -493,16 +492,14 @@
ciw = ccw_device_get_ciw(init_data->cdev, CIW_TYPE_EQUEUE);
if (!ciw) {
DBF_ERROR("%4x NO EQ", irq_ptr->schid.sch_no);
- rc = -EINVAL;
- goto out_err;
+ return -EINVAL;
}
irq_ptr->equeue = *ciw;
ciw = ccw_device_get_ciw(init_data->cdev, CIW_TYPE_AQUEUE);
if (!ciw) {
DBF_ERROR("%4x NO AQ", irq_ptr->schid.sch_no);
- rc = -EINVAL;
- goto out_err;
+ return -EINVAL;
}
irq_ptr->aqueue = *ciw;
@@ -512,9 +509,6 @@
init_data->cdev->handler = qdio_int_handler;
spin_unlock_irq(get_ccwdev_lock(irq_ptr->cdev));
return 0;
-out_err:
- qdio_release_memory(irq_ptr);
- return rc;
}
void qdio_print_subchannel_info(struct qdio_irq *irq_ptr,
diff --git a/drivers/s390/cio/vfio_ccw_cp.c b/drivers/s390/cio/vfio_ccw_cp.c
index 2c75507..dce92b2 100644
--- a/drivers/s390/cio/vfio_ccw_cp.c
+++ b/drivers/s390/cio/vfio_ccw_cp.c
@@ -715,6 +715,10 @@
* and stores the result to ccwchain list. @cp must have been
* initialized by a previous call with cp_init(). Otherwise, undefined
* behavior occurs.
+ * For each chain composing the channel program:
+ * - On entry ch_len holds the count of CCWs to be translated.
+ * - On exit ch_len is adjusted to the count of successfully translated CCWs.
+ * This allows cp_free to find in ch_len the count of CCWs to free in a chain.
*
* The S/390 CCW Translation APIS (prefixed by 'cp_') are introduced
* as helpers to do ccw chain translation inside the kernel. Basically
@@ -749,11 +753,18 @@
for (idx = 0; idx < len; idx++) {
ret = ccwchain_fetch_one(chain, idx, cp);
if (ret)
- return ret;
+ goto out_err;
}
}
return 0;
+out_err:
+ /* Only cleanup the chain elements that were actually translated. */
+ chain->ch_len = idx;
+ list_for_each_entry_continue(chain, &cp->ccwchain_list, next) {
+ chain->ch_len = 0;
+ }
+ return ret;
}
/**
diff --git a/drivers/scsi/aacraid/commsup.c b/drivers/scsi/aacraid/commsup.c
index 0156c96..d62ddd6 100644
--- a/drivers/scsi/aacraid/commsup.c
+++ b/drivers/scsi/aacraid/commsup.c
@@ -724,6 +724,8 @@
int wait;
unsigned long flags = 0;
unsigned long mflags = 0;
+ struct aac_hba_cmd_req *hbacmd = (struct aac_hba_cmd_req *)
+ fibptr->hw_fib_va;
fibptr->flags = (FIB_CONTEXT_FLAG | FIB_CONTEXT_FLAG_NATIVE_HBA);
if (callback) {
@@ -734,11 +736,9 @@
wait = 1;
- if (command == HBA_IU_TYPE_SCSI_CMD_REQ) {
- struct aac_hba_cmd_req *hbacmd =
- (struct aac_hba_cmd_req *)fibptr->hw_fib_va;
+ hbacmd->iu_type = command;
- hbacmd->iu_type = command;
+ if (command == HBA_IU_TYPE_SCSI_CMD_REQ) {
/* bit1 of request_id must be 0 */
hbacmd->request_id =
cpu_to_le32((((u32)(fibptr - dev->fibs)) << 2) + 1);
diff --git a/drivers/scsi/vmw_pvscsi.c b/drivers/scsi/vmw_pvscsi.c
index c374e3b..777e5f1 100644
--- a/drivers/scsi/vmw_pvscsi.c
+++ b/drivers/scsi/vmw_pvscsi.c
@@ -609,7 +609,7 @@
break;
case BTSTAT_ABORTQUEUE:
- cmd->result = (DID_ABORT << 16);
+ cmd->result = (DID_BUS_BUSY << 16);
break;
case BTSTAT_SCSIPARITY:
diff --git a/drivers/spi/spi-bcm-qspi.c b/drivers/spi/spi-bcm-qspi.c
index 1596d35..6573152 100644
--- a/drivers/spi/spi-bcm-qspi.c
+++ b/drivers/spi/spi-bcm-qspi.c
@@ -490,7 +490,7 @@
static void bcm_qspi_enable_bspi(struct bcm_qspi *qspi)
{
- if (!has_bspi(qspi) || (qspi->bspi_enabled))
+ if (!has_bspi(qspi))
return;
qspi->bspi_enabled = 1;
@@ -505,7 +505,7 @@
static void bcm_qspi_disable_bspi(struct bcm_qspi *qspi)
{
- if (!has_bspi(qspi) || (!qspi->bspi_enabled))
+ if (!has_bspi(qspi))
return;
qspi->bspi_enabled = 0;
@@ -519,16 +519,19 @@
static void bcm_qspi_chip_select(struct bcm_qspi *qspi, int cs)
{
- u32 data = 0;
+ u32 rd = 0;
+ u32 wr = 0;
- if (qspi->curr_cs == cs)
- return;
if (qspi->base[CHIP_SELECT]) {
- data = bcm_qspi_read(qspi, CHIP_SELECT, 0);
- data = (data & ~0xff) | (1 << cs);
- bcm_qspi_write(qspi, CHIP_SELECT, 0, data);
+ rd = bcm_qspi_read(qspi, CHIP_SELECT, 0);
+ wr = (rd & ~0xff) | (1 << cs);
+ if (rd == wr)
+ return;
+ bcm_qspi_write(qspi, CHIP_SELECT, 0, wr);
usleep_range(10, 20);
}
+
+ dev_dbg(&qspi->pdev->dev, "using cs:%d\n", cs);
qspi->curr_cs = cs;
}
@@ -755,8 +758,13 @@
dev_dbg(&qspi->pdev->dev, "WR %04x\n", val);
}
mspi_cdram = MSPI_CDRAM_CONT_BIT;
- mspi_cdram |= (~(1 << spi->chip_select) &
- MSPI_CDRAM_PCS);
+
+ if (has_bspi(qspi))
+ mspi_cdram &= ~1;
+ else
+ mspi_cdram |= (~(1 << spi->chip_select) &
+ MSPI_CDRAM_PCS);
+
mspi_cdram |= ((tp.trans->bits_per_word <= 8) ? 0 :
MSPI_CDRAM_BITSE_BIT);
diff --git a/drivers/spi/spi-bcm2835aux.c b/drivers/spi/spi-bcm2835aux.c
index 1431cb9..3094d81 100644
--- a/drivers/spi/spi-bcm2835aux.c
+++ b/drivers/spi/spi-bcm2835aux.c
@@ -184,6 +184,11 @@
struct bcm2835aux_spi *bs = spi_master_get_devdata(master);
irqreturn_t ret = IRQ_NONE;
+ /* IRQ may be shared, so return if our interrupts are disabled */
+ if (!(bcm2835aux_rd(bs, BCM2835_AUX_SPI_CNTL1) &
+ (BCM2835_AUX_SPI_CNTL1_TXEMPTY | BCM2835_AUX_SPI_CNTL1_IDLE)))
+ return ret;
+
/* check if we have data to read */
while (bs->rx_len &&
(!(bcm2835aux_rd(bs, BCM2835_AUX_SPI_STAT) &
diff --git a/drivers/spi/spi-cadence.c b/drivers/spi/spi-cadence.c
index 5c9516a..4a00163 100644
--- a/drivers/spi/spi-cadence.c
+++ b/drivers/spi/spi-cadence.c
@@ -313,6 +313,14 @@
while ((trans_cnt < CDNS_SPI_FIFO_DEPTH) &&
(xspi->tx_bytes > 0)) {
+
+ /* When xspi in busy condition, bytes may send failed,
+ * then spi control did't work thoroughly, add one byte delay
+ */
+ if (cdns_spi_read(xspi, CDNS_SPI_ISR) &
+ CDNS_SPI_IXR_TXFULL)
+ usleep_range(10, 20);
+
if (xspi->txbuf)
cdns_spi_write(xspi, CDNS_SPI_TXD, *xspi->txbuf++);
else
diff --git a/drivers/spi/spi-imx.c b/drivers/spi/spi-imx.c
index 6f57592..a056ee8 100644
--- a/drivers/spi/spi-imx.c
+++ b/drivers/spi/spi-imx.c
@@ -1701,7 +1701,7 @@
};
module_platform_driver(spi_imx_driver);
-MODULE_DESCRIPTION("SPI Master Controller driver");
+MODULE_DESCRIPTION("SPI Controller driver");
MODULE_AUTHOR("Sascha Hauer, Pengutronix");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:" DRIVER_NAME);
diff --git a/drivers/spi/spi-pxa2xx.h b/drivers/spi/spi-pxa2xx.h
index 513ec6c..0ae7def 100644
--- a/drivers/spi/spi-pxa2xx.h
+++ b/drivers/spi/spi-pxa2xx.h
@@ -38,7 +38,7 @@
/* SSP register addresses */
void __iomem *ioaddr;
- u32 ssdr_physical;
+ phys_addr_t ssdr_physical;
/* SSP masks*/
u32 dma_cr1;
diff --git a/drivers/spi/spi-sh-msiof.c b/drivers/spi/spi-sh-msiof.c
index ae086aa..8171eed 100644
--- a/drivers/spi/spi-sh-msiof.c
+++ b/drivers/spi/spi-sh-msiof.c
@@ -283,6 +283,7 @@
}
k = min_t(int, k, ARRAY_SIZE(sh_msiof_spi_div_table) - 1);
+ brps = min_t(int, brps, 32);
scr = sh_msiof_spi_div_table[k].brdv | SCR_BRPS(brps);
sh_msiof_write(p, TSCR, scr);
diff --git a/drivers/tee/tee_core.c b/drivers/tee/tee_core.c
index 0124a91..dd46b75 100644
--- a/drivers/tee/tee_core.c
+++ b/drivers/tee/tee_core.c
@@ -238,6 +238,17 @@
if (IS_ERR(shm))
return PTR_ERR(shm);
+ /*
+ * Ensure offset + size does not overflow offset
+ * and does not overflow the size of the referred
+ * shared memory object.
+ */
+ if ((ip.a + ip.b) < ip.a ||
+ (ip.a + ip.b) > shm->size) {
+ tee_shm_put(shm);
+ return -EINVAL;
+ }
+
params[n].u.memref.shm_offs = ip.a;
params[n].u.memref.size = ip.b;
params[n].u.memref.shm = shm;
diff --git a/drivers/tee/tee_shm.c b/drivers/tee/tee_shm.c
index 556960a..07d3be6 100644
--- a/drivers/tee/tee_shm.c
+++ b/drivers/tee/tee_shm.c
@@ -360,9 +360,10 @@
if (!(shm->flags & TEE_SHM_DMA_BUF))
return -EINVAL;
+ get_dma_buf(shm->dmabuf);
fd = dma_buf_fd(shm->dmabuf, O_CLOEXEC);
- if (fd >= 0)
- get_dma_buf(shm->dmabuf);
+ if (fd < 0)
+ dma_buf_put(shm->dmabuf);
return fd;
}
diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c
index 72ebbc9..32cd52c 100644
--- a/drivers/usb/host/xhci-hub.c
+++ b/drivers/usb/host/xhci-hub.c
@@ -354,7 +354,7 @@
slot_id = 0;
for (i = 0; i < MAX_HC_SLOTS; i++) {
- if (!xhci->devs[i])
+ if (!xhci->devs[i] || !xhci->devs[i]->udev)
continue;
speed = xhci->devs[i]->udev->speed;
if (((speed >= USB_SPEED_SUPER) == (hcd->speed >= HCD_USB3))
diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c
index e7f99d5..15a42ce 100644
--- a/drivers/usb/musb/musb_host.c
+++ b/drivers/usb/musb/musb_host.c
@@ -2524,8 +2524,11 @@
{
struct musb *musb = hcd_to_musb(hcd);
u8 devctl;
+ int ret;
- musb_port_suspend(musb, true);
+ ret = musb_port_suspend(musb, true);
+ if (ret)
+ return ret;
if (!is_host_active(musb))
return 0;
diff --git a/drivers/usb/musb/musb_host.h b/drivers/usb/musb/musb_host.h
index 72392bb..2999845 100644
--- a/drivers/usb/musb/musb_host.h
+++ b/drivers/usb/musb/musb_host.h
@@ -67,7 +67,7 @@
extern void musb_root_disconnect(struct musb *musb);
extern void musb_host_resume_root_hub(struct musb *musb);
extern void musb_host_poke_root_hub(struct musb *musb);
-extern void musb_port_suspend(struct musb *musb, bool do_suspend);
+extern int musb_port_suspend(struct musb *musb, bool do_suspend);
extern void musb_port_reset(struct musb *musb, bool do_reset);
extern void musb_host_finish_resume(struct work_struct *work);
#else
@@ -99,7 +99,10 @@
static inline void musb_host_resume_root_hub(struct musb *musb) {}
static inline void musb_host_poll_rh_status(struct musb *musb) {}
static inline void musb_host_poke_root_hub(struct musb *musb) {}
-static inline void musb_port_suspend(struct musb *musb, bool do_suspend) {}
+static inline int musb_port_suspend(struct musb *musb, bool do_suspend)
+{
+ return 0;
+}
static inline void musb_port_reset(struct musb *musb, bool do_reset) {}
static inline void musb_host_finish_resume(struct work_struct *work) {}
#endif
diff --git a/drivers/usb/musb/musb_virthub.c b/drivers/usb/musb/musb_virthub.c
index 5165d2b..2f8dd98 100644
--- a/drivers/usb/musb/musb_virthub.c
+++ b/drivers/usb/musb/musb_virthub.c
@@ -48,14 +48,14 @@
spin_unlock_irqrestore(&musb->lock, flags);
}
-void musb_port_suspend(struct musb *musb, bool do_suspend)
+int musb_port_suspend(struct musb *musb, bool do_suspend)
{
struct usb_otg *otg = musb->xceiv->otg;
u8 power;
void __iomem *mbase = musb->mregs;
if (!is_host_active(musb))
- return;
+ return 0;
/* NOTE: this doesn't necessarily put PHY into low power mode,
* turning off its clock; that's a function of PHY integration and
@@ -66,16 +66,20 @@
if (do_suspend) {
int retries = 10000;
- power &= ~MUSB_POWER_RESUME;
- power |= MUSB_POWER_SUSPENDM;
- musb_writeb(mbase, MUSB_POWER, power);
+ if (power & MUSB_POWER_RESUME)
+ return -EBUSY;
- /* Needed for OPT A tests */
- power = musb_readb(mbase, MUSB_POWER);
- while (power & MUSB_POWER_SUSPENDM) {
+ if (!(power & MUSB_POWER_SUSPENDM)) {
+ power |= MUSB_POWER_SUSPENDM;
+ musb_writeb(mbase, MUSB_POWER, power);
+
+ /* Needed for OPT A tests */
power = musb_readb(mbase, MUSB_POWER);
- if (retries-- < 1)
- break;
+ while (power & MUSB_POWER_SUSPENDM) {
+ power = musb_readb(mbase, MUSB_POWER);
+ if (retries-- < 1)
+ break;
+ }
}
musb_dbg(musb, "Root port suspended, power %02x", power);
@@ -111,6 +115,7 @@
schedule_delayed_work(&musb->finish_resume_work,
msecs_to_jiffies(USB_RESUME_TIMEOUT));
}
+ return 0;
}
void musb_port_reset(struct musb *musb, bool do_reset)
diff --git a/drivers/usb/usbip/stub.h b/drivers/usb/usbip/stub.h
index 14a72357..35618ce 100644
--- a/drivers/usb/usbip/stub.h
+++ b/drivers/usb/usbip/stub.h
@@ -73,6 +73,7 @@
struct stub_device *sdev;
struct usb_device *udev;
char shutdown_busid;
+ spinlock_t busid_lock;
};
/* stub_priv is allocated from stub_priv_cache */
@@ -83,6 +84,7 @@
/* stub_main.c */
struct bus_id_priv *get_busid_priv(const char *busid);
+void put_busid_priv(struct bus_id_priv *bid);
int del_match_busid(char *busid);
void stub_device_cleanup_urbs(struct stub_device *sdev);
diff --git a/drivers/usb/usbip/stub_dev.c b/drivers/usb/usbip/stub_dev.c
index dd8ef36..c0d6ff1 100644
--- a/drivers/usb/usbip/stub_dev.c
+++ b/drivers/usb/usbip/stub_dev.c
@@ -300,9 +300,9 @@
struct stub_device *sdev = NULL;
const char *udev_busid = dev_name(&udev->dev);
struct bus_id_priv *busid_priv;
- int rc;
+ int rc = 0;
- dev_dbg(&udev->dev, "Enter\n");
+ dev_dbg(&udev->dev, "Enter probe\n");
/* check we should claim or not by busid_table */
busid_priv = get_busid_priv(udev_busid);
@@ -317,13 +317,15 @@
* other matched drivers by the driver core.
* See driver_probe_device() in driver/base/dd.c
*/
- return -ENODEV;
+ rc = -ENODEV;
+ goto call_put_busid_priv;
}
if (udev->descriptor.bDeviceClass == USB_CLASS_HUB) {
dev_dbg(&udev->dev, "%s is a usb hub device... skip!\n",
udev_busid);
- return -ENODEV;
+ rc = -ENODEV;
+ goto call_put_busid_priv;
}
if (!strcmp(udev->bus->bus_name, "vhci_hcd")) {
@@ -331,13 +333,16 @@
"%s is attached on vhci_hcd... skip!\n",
udev_busid);
- return -ENODEV;
+ rc = -ENODEV;
+ goto call_put_busid_priv;
}
/* ok, this is my device */
sdev = stub_device_alloc(udev);
- if (!sdev)
- return -ENOMEM;
+ if (!sdev) {
+ rc = -ENOMEM;
+ goto call_put_busid_priv;
+ }
dev_info(&udev->dev,
"usbip-host: register new device (bus %u dev %u)\n",
@@ -369,7 +374,9 @@
}
busid_priv->status = STUB_BUSID_ALLOC;
- return 0;
+ rc = 0;
+ goto call_put_busid_priv;
+
err_files:
usb_hub_release_port(udev->parent, udev->portnum,
(struct usb_dev_state *) udev);
@@ -379,6 +386,9 @@
busid_priv->sdev = NULL;
stub_device_free(sdev);
+
+call_put_busid_priv:
+ put_busid_priv(busid_priv);
return rc;
}
@@ -404,7 +414,7 @@
struct bus_id_priv *busid_priv;
int rc;
- dev_dbg(&udev->dev, "Enter\n");
+ dev_dbg(&udev->dev, "Enter disconnect\n");
busid_priv = get_busid_priv(udev_busid);
if (!busid_priv) {
@@ -417,7 +427,7 @@
/* get stub_device */
if (!sdev) {
dev_err(&udev->dev, "could not get device");
- return;
+ goto call_put_busid_priv;
}
dev_set_drvdata(&udev->dev, NULL);
@@ -432,12 +442,12 @@
(struct usb_dev_state *) udev);
if (rc) {
dev_dbg(&udev->dev, "unable to release port\n");
- return;
+ goto call_put_busid_priv;
}
/* If usb reset is called from event handler */
if (usbip_in_eh(current))
- return;
+ goto call_put_busid_priv;
/* shutdown the current connection */
shutdown_busid(busid_priv);
@@ -448,12 +458,11 @@
busid_priv->sdev = NULL;
stub_device_free(sdev);
- if (busid_priv->status == STUB_BUSID_ALLOC) {
+ if (busid_priv->status == STUB_BUSID_ALLOC)
busid_priv->status = STUB_BUSID_ADDED;
- } else {
- busid_priv->status = STUB_BUSID_OTHER;
- del_match_busid((char *)udev_busid);
- }
+
+call_put_busid_priv:
+ put_busid_priv(busid_priv);
}
#ifdef CONFIG_PM
diff --git a/drivers/usb/usbip/stub_main.c b/drivers/usb/usbip/stub_main.c
index d41d0cd..bf8a5fe 100644
--- a/drivers/usb/usbip/stub_main.c
+++ b/drivers/usb/usbip/stub_main.c
@@ -14,6 +14,7 @@
#define DRIVER_DESC "USB/IP Host Driver"
struct kmem_cache *stub_priv_cache;
+
/*
* busid_tables defines matching busids that usbip can grab. A user can change
* dynamically what device is locally used and what device is exported to a
@@ -25,6 +26,8 @@
static void init_busid_table(void)
{
+ int i;
+
/*
* This also sets the bus_table[i].status to
* STUB_BUSID_OTHER, which is 0.
@@ -32,6 +35,9 @@
memset(busid_table, 0, sizeof(busid_table));
spin_lock_init(&busid_table_lock);
+
+ for (i = 0; i < MAX_BUSID; i++)
+ spin_lock_init(&busid_table[i].busid_lock);
}
/*
@@ -43,15 +49,20 @@
int i;
int idx = -1;
- for (i = 0; i < MAX_BUSID; i++)
+ for (i = 0; i < MAX_BUSID; i++) {
+ spin_lock(&busid_table[i].busid_lock);
if (busid_table[i].name[0])
if (!strncmp(busid_table[i].name, busid, BUSID_SIZE)) {
idx = i;
+ spin_unlock(&busid_table[i].busid_lock);
break;
}
+ spin_unlock(&busid_table[i].busid_lock);
+ }
return idx;
}
+/* Returns holding busid_lock. Should call put_busid_priv() to unlock */
struct bus_id_priv *get_busid_priv(const char *busid)
{
int idx;
@@ -59,13 +70,22 @@
spin_lock(&busid_table_lock);
idx = get_busid_idx(busid);
- if (idx >= 0)
+ if (idx >= 0) {
bid = &(busid_table[idx]);
+ /* get busid_lock before returning */
+ spin_lock(&bid->busid_lock);
+ }
spin_unlock(&busid_table_lock);
return bid;
}
+void put_busid_priv(struct bus_id_priv *bid)
+{
+ if (bid)
+ spin_unlock(&bid->busid_lock);
+}
+
static int add_match_busid(char *busid)
{
int i;
@@ -78,15 +98,19 @@
goto out;
}
- for (i = 0; i < MAX_BUSID; i++)
+ for (i = 0; i < MAX_BUSID; i++) {
+ spin_lock(&busid_table[i].busid_lock);
if (!busid_table[i].name[0]) {
strlcpy(busid_table[i].name, busid, BUSID_SIZE);
if ((busid_table[i].status != STUB_BUSID_ALLOC) &&
(busid_table[i].status != STUB_BUSID_REMOV))
busid_table[i].status = STUB_BUSID_ADDED;
ret = 0;
+ spin_unlock(&busid_table[i].busid_lock);
break;
}
+ spin_unlock(&busid_table[i].busid_lock);
+ }
out:
spin_unlock(&busid_table_lock);
@@ -107,6 +131,8 @@
/* found */
ret = 0;
+ spin_lock(&busid_table[idx].busid_lock);
+
if (busid_table[idx].status == STUB_BUSID_OTHER)
memset(busid_table[idx].name, 0, BUSID_SIZE);
@@ -114,6 +140,7 @@
(busid_table[idx].status != STUB_BUSID_ADDED))
busid_table[idx].status = STUB_BUSID_REMOV;
+ spin_unlock(&busid_table[idx].busid_lock);
out:
spin_unlock(&busid_table_lock);
@@ -126,9 +153,12 @@
char *out = buf;
spin_lock(&busid_table_lock);
- for (i = 0; i < MAX_BUSID; i++)
+ for (i = 0; i < MAX_BUSID; i++) {
+ spin_lock(&busid_table[i].busid_lock);
if (busid_table[i].name[0])
out += sprintf(out, "%s ", busid_table[i].name);
+ spin_unlock(&busid_table[i].busid_lock);
+ }
spin_unlock(&busid_table_lock);
out += sprintf(out, "\n");
@@ -169,6 +199,51 @@
}
static DRIVER_ATTR_RW(match_busid);
+static int do_rebind(char *busid, struct bus_id_priv *busid_priv)
+{
+ int ret;
+
+ /* device_attach() callers should hold parent lock for USB */
+ if (busid_priv->udev->dev.parent)
+ device_lock(busid_priv->udev->dev.parent);
+ ret = device_attach(&busid_priv->udev->dev);
+ if (busid_priv->udev->dev.parent)
+ device_unlock(busid_priv->udev->dev.parent);
+ if (ret < 0) {
+ dev_err(&busid_priv->udev->dev, "rebind failed\n");
+ return ret;
+ }
+ return 0;
+}
+
+static void stub_device_rebind(void)
+{
+#if IS_MODULE(CONFIG_USBIP_HOST)
+ struct bus_id_priv *busid_priv;
+ int i;
+
+ /* update status to STUB_BUSID_OTHER so probe ignores the device */
+ spin_lock(&busid_table_lock);
+ for (i = 0; i < MAX_BUSID; i++) {
+ if (busid_table[i].name[0] &&
+ busid_table[i].shutdown_busid) {
+ busid_priv = &(busid_table[i]);
+ busid_priv->status = STUB_BUSID_OTHER;
+ }
+ }
+ spin_unlock(&busid_table_lock);
+
+ /* now run rebind - no need to hold locks. driver files are removed */
+ for (i = 0; i < MAX_BUSID; i++) {
+ if (busid_table[i].name[0] &&
+ busid_table[i].shutdown_busid) {
+ busid_priv = &(busid_table[i]);
+ do_rebind(busid_table[i].name, busid_priv);
+ }
+ }
+#endif
+}
+
static ssize_t rebind_store(struct device_driver *dev, const char *buf,
size_t count)
{
@@ -186,16 +261,17 @@
if (!bid)
return -ENODEV;
- /* device_attach() callers should hold parent lock for USB */
- if (bid->udev->dev.parent)
- device_lock(bid->udev->dev.parent);
- ret = device_attach(&bid->udev->dev);
- if (bid->udev->dev.parent)
- device_unlock(bid->udev->dev.parent);
- if (ret < 0) {
- dev_err(&bid->udev->dev, "rebind failed\n");
+ /* mark the device for deletion so probe ignores it during rescan */
+ bid->status = STUB_BUSID_OTHER;
+ /* release the busid lock */
+ put_busid_priv(bid);
+
+ ret = do_rebind((char *) buf, bid);
+ if (ret < 0)
return ret;
- }
+
+ /* delete device from busid_table */
+ del_match_busid((char *) buf);
return count;
}
@@ -317,6 +393,9 @@
*/
usb_deregister_device_driver(&stub_driver);
+ /* initiate scan to attach devices */
+ stub_device_rebind();
+
kmem_cache_destroy(stub_priv_cache);
}
diff --git a/fs/afs/addr_list.c b/fs/afs/addr_list.c
index 3bedfed..7587fb6 100644
--- a/fs/afs/addr_list.c
+++ b/fs/afs/addr_list.c
@@ -121,7 +121,7 @@
p = text;
do {
struct sockaddr_rxrpc *srx = &alist->addrs[alist->nr_addrs];
- char tdelim = delim;
+ const char *q, *stop;
if (*p == delim) {
p++;
@@ -130,28 +130,33 @@
if (*p == '[') {
p++;
- tdelim = ']';
+ q = memchr(p, ']', end - p);
+ } else {
+ for (q = p; q < end; q++)
+ if (*q == '+' || *q == delim)
+ break;
}
- if (in4_pton(p, end - p,
+ if (in4_pton(p, q - p,
(u8 *)&srx->transport.sin6.sin6_addr.s6_addr32[3],
- tdelim, &p)) {
+ -1, &stop)) {
srx->transport.sin6.sin6_addr.s6_addr32[0] = 0;
srx->transport.sin6.sin6_addr.s6_addr32[1] = 0;
srx->transport.sin6.sin6_addr.s6_addr32[2] = htonl(0xffff);
- } else if (in6_pton(p, end - p,
+ } else if (in6_pton(p, q - p,
srx->transport.sin6.sin6_addr.s6_addr,
- tdelim, &p)) {
+ -1, &stop)) {
/* Nothing to do */
} else {
goto bad_address;
}
- if (tdelim == ']') {
- if (p == end || *p != ']')
- goto bad_address;
+ if (stop != q)
+ goto bad_address;
+
+ p = q;
+ if (q < end && *q == ']')
p++;
- }
if (p < end) {
if (*p == '+') {
diff --git a/fs/afs/callback.c b/fs/afs/callback.c
index abd9a84..571437d 100644
--- a/fs/afs/callback.c
+++ b/fs/afs/callback.c
@@ -23,36 +23,55 @@
/*
* Set up an interest-in-callbacks record for a volume on a server and
* register it with the server.
- * - Called with volume->server_sem held.
+ * - Called with vnode->io_lock held.
*/
int afs_register_server_cb_interest(struct afs_vnode *vnode,
- struct afs_server_entry *entry)
+ struct afs_server_list *slist,
+ unsigned int index)
{
- struct afs_cb_interest *cbi = entry->cb_interest, *vcbi, *new, *x;
+ struct afs_server_entry *entry = &slist->servers[index];
+ struct afs_cb_interest *cbi, *vcbi, *new, *old;
struct afs_server *server = entry->server;
again:
+ if (vnode->cb_interest &&
+ likely(vnode->cb_interest == entry->cb_interest))
+ return 0;
+
+ read_lock(&slist->lock);
+ cbi = afs_get_cb_interest(entry->cb_interest);
+ read_unlock(&slist->lock);
+
vcbi = vnode->cb_interest;
if (vcbi) {
- if (vcbi == cbi)
- return 0;
-
- if (cbi && vcbi->server == cbi->server) {
- write_seqlock(&vnode->cb_lock);
- vnode->cb_interest = afs_get_cb_interest(cbi);
- write_sequnlock(&vnode->cb_lock);
+ if (vcbi == cbi) {
afs_put_cb_interest(afs_v2net(vnode), cbi);
return 0;
}
+ /* Use a new interest in the server list for the same server
+ * rather than an old one that's still attached to a vnode.
+ */
+ if (cbi && vcbi->server == cbi->server) {
+ write_seqlock(&vnode->cb_lock);
+ old = vnode->cb_interest;
+ vnode->cb_interest = cbi;
+ write_sequnlock(&vnode->cb_lock);
+ afs_put_cb_interest(afs_v2net(vnode), old);
+ return 0;
+ }
+
+ /* Re-use the one attached to the vnode. */
if (!cbi && vcbi->server == server) {
- afs_get_cb_interest(vcbi);
- x = cmpxchg(&entry->cb_interest, cbi, vcbi);
- if (x != cbi) {
- cbi = x;
- afs_put_cb_interest(afs_v2net(vnode), vcbi);
+ write_lock(&slist->lock);
+ if (entry->cb_interest) {
+ write_unlock(&slist->lock);
+ afs_put_cb_interest(afs_v2net(vnode), cbi);
goto again;
}
+
+ entry->cb_interest = cbi;
+ write_unlock(&slist->lock);
return 0;
}
}
@@ -72,13 +91,16 @@
list_add_tail(&new->cb_link, &server->cb_interests);
write_unlock(&server->cb_break_lock);
- x = cmpxchg(&entry->cb_interest, cbi, new);
- if (x == cbi) {
+ write_lock(&slist->lock);
+ if (!entry->cb_interest) {
+ entry->cb_interest = afs_get_cb_interest(new);
cbi = new;
+ new = NULL;
} else {
- cbi = x;
- afs_put_cb_interest(afs_v2net(vnode), new);
+ cbi = afs_get_cb_interest(entry->cb_interest);
}
+ write_unlock(&slist->lock);
+ afs_put_cb_interest(afs_v2net(vnode), new);
}
ASSERT(cbi);
@@ -88,11 +110,14 @@
*/
write_seqlock(&vnode->cb_lock);
- vnode->cb_interest = afs_get_cb_interest(cbi);
+ old = vnode->cb_interest;
+ vnode->cb_interest = cbi;
vnode->cb_s_break = cbi->server->cb_s_break;
+ vnode->cb_v_break = vnode->volume->cb_v_break;
clear_bit(AFS_VNODE_CB_PROMISED, &vnode->flags);
write_sequnlock(&vnode->cb_lock);
+ afs_put_cb_interest(afs_v2net(vnode), old);
return 0;
}
@@ -171,13 +196,24 @@
if (cbi->vid != fid->vid)
continue;
- data.volume = NULL;
- data.fid = *fid;
- inode = ilookup5_nowait(cbi->sb, fid->vnode, afs_iget5_test, &data);
- if (inode) {
- vnode = AFS_FS_I(inode);
- afs_break_callback(vnode);
- iput(inode);
+ if (fid->vnode == 0 && fid->unique == 0) {
+ /* The callback break applies to an entire volume. */
+ struct afs_super_info *as = AFS_FS_S(cbi->sb);
+ struct afs_volume *volume = as->volume;
+
+ write_lock(&volume->cb_break_lock);
+ volume->cb_v_break++;
+ write_unlock(&volume->cb_break_lock);
+ } else {
+ data.volume = NULL;
+ data.fid = *fid;
+ inode = ilookup5_nowait(cbi->sb, fid->vnode,
+ afs_iget5_test, &data);
+ if (inode) {
+ vnode = AFS_FS_I(inode);
+ afs_break_callback(vnode);
+ iput(inode);
+ }
}
}
@@ -195,6 +231,8 @@
ASSERT(server != NULL);
ASSERTCMP(count, <=, AFSCBMAX);
+ /* TODO: Sort the callback break list by volume ID */
+
for (; count > 0; callbacks++, count--) {
_debug("- Fid { vl=%08x n=%u u=%u } CB { v=%u x=%u t=%u }",
callbacks->fid.vid,
diff --git a/fs/afs/cmservice.c b/fs/afs/cmservice.c
index 357de90..c332c95 100644
--- a/fs/afs/cmservice.c
+++ b/fs/afs/cmservice.c
@@ -133,21 +133,10 @@
}
/*
- * clean up a cache manager call
+ * Clean up a cache manager call.
*/
static void afs_cm_destructor(struct afs_call *call)
{
- _enter("");
-
- /* Break the callbacks here so that we do it after the final ACK is
- * received. The step number here must match the final number in
- * afs_deliver_cb_callback().
- */
- if (call->unmarshall == 5) {
- ASSERT(call->cm_server && call->count && call->request);
- afs_break_callbacks(call->cm_server, call->count, call->request);
- }
-
kfree(call->buffer);
call->buffer = NULL;
}
@@ -161,14 +150,14 @@
_enter("");
- /* be sure to send the reply *before* attempting to spam the AFS server
- * with FSFetchStatus requests on the vnodes with broken callbacks lest
- * the AFS server get into a vicious cycle of trying to break further
- * callbacks because it hadn't received completion of the CBCallBack op
- * yet */
- afs_send_empty_reply(call);
+ /* We need to break the callbacks before sending the reply as the
+ * server holds up change visibility till it receives our reply so as
+ * to maintain cache coherency.
+ */
+ if (call->cm_server)
+ afs_break_callbacks(call->cm_server, call->count, call->request);
- afs_break_callbacks(call->cm_server, call->count, call->request);
+ afs_send_empty_reply(call);
afs_put_call(call);
_leave("");
}
@@ -180,7 +169,6 @@
{
struct afs_callback_break *cb;
struct sockaddr_rxrpc srx;
- struct afs_server *server;
__be32 *bp;
int ret, loop;
@@ -267,15 +255,6 @@
call->offset = 0;
call->unmarshall++;
-
- /* Record that the message was unmarshalled successfully so
- * that the call destructor can know do the callback breaking
- * work, even if the final ACK isn't received.
- *
- * If the step number changes, then afs_cm_destructor() must be
- * updated also.
- */
- call->unmarshall++;
case 5:
break;
}
@@ -286,10 +265,9 @@
/* we'll need the file server record as that tells us which set of
* vnodes to operate upon */
rxrpc_kernel_get_peer(call->net->socket, call->rxcall, &srx);
- server = afs_find_server(call->net, &srx);
- if (!server)
- return -ENOTCONN;
- call->cm_server = server;
+ call->cm_server = afs_find_server(call->net, &srx);
+ if (!call->cm_server)
+ trace_afs_cm_no_server(call, &srx);
return afs_queue_call_work(call);
}
@@ -303,7 +281,8 @@
_enter("{%p}", call->cm_server);
- afs_init_callback_state(call->cm_server);
+ if (call->cm_server)
+ afs_init_callback_state(call->cm_server);
afs_send_empty_reply(call);
afs_put_call(call);
_leave("");
@@ -315,7 +294,6 @@
static int afs_deliver_cb_init_call_back_state(struct afs_call *call)
{
struct sockaddr_rxrpc srx;
- struct afs_server *server;
int ret;
_enter("");
@@ -328,10 +306,9 @@
/* we'll need the file server record as that tells us which set of
* vnodes to operate upon */
- server = afs_find_server(call->net, &srx);
- if (!server)
- return -ENOTCONN;
- call->cm_server = server;
+ call->cm_server = afs_find_server(call->net, &srx);
+ if (!call->cm_server)
+ trace_afs_cm_no_server(call, &srx);
return afs_queue_call_work(call);
}
@@ -341,8 +318,6 @@
*/
static int afs_deliver_cb_init_call_back_state3(struct afs_call *call)
{
- struct sockaddr_rxrpc srx;
- struct afs_server *server;
struct afs_uuid *r;
unsigned loop;
__be32 *b;
@@ -398,11 +373,11 @@
/* we'll need the file server record as that tells us which set of
* vnodes to operate upon */
- rxrpc_kernel_get_peer(call->net->socket, call->rxcall, &srx);
- server = afs_find_server(call->net, &srx);
- if (!server)
- return -ENOTCONN;
- call->cm_server = server;
+ rcu_read_lock();
+ call->cm_server = afs_find_server_by_uuid(call->net, call->request);
+ rcu_read_unlock();
+ if (!call->cm_server)
+ trace_afs_cm_no_server_u(call, call->request);
return afs_queue_call_work(call);
}
diff --git a/fs/afs/dir.c b/fs/afs/dir.c
index 5889f70..7d623008 100644
--- a/fs/afs/dir.c
+++ b/fs/afs/dir.c
@@ -180,6 +180,7 @@
* get reclaimed during the iteration.
*/
static struct afs_read *afs_read_dir(struct afs_vnode *dvnode, struct key *key)
+ __acquires(&dvnode->validate_lock)
{
struct afs_read *req;
loff_t i_size;
@@ -261,18 +262,21 @@
/* If we're going to reload, we need to lock all the pages to prevent
* races.
*/
+ ret = -ERESTARTSYS;
+ if (down_read_killable(&dvnode->validate_lock) < 0)
+ goto error;
+
+ if (test_bit(AFS_VNODE_DIR_VALID, &dvnode->flags))
+ goto success;
+
+ up_read(&dvnode->validate_lock);
+ if (down_write_killable(&dvnode->validate_lock) < 0)
+ goto error;
+
if (!test_bit(AFS_VNODE_DIR_VALID, &dvnode->flags)) {
- ret = -ERESTARTSYS;
- for (i = 0; i < req->nr_pages; i++)
- if (lock_page_killable(req->pages[i]) < 0)
- goto error_unlock;
-
- if (test_bit(AFS_VNODE_DIR_VALID, &dvnode->flags))
- goto success;
-
ret = afs_fetch_data(dvnode, key, req);
if (ret < 0)
- goto error_unlock_all;
+ goto error_unlock;
task_io_account_read(PAGE_SIZE * req->nr_pages);
@@ -284,33 +288,26 @@
for (i = 0; i < req->nr_pages; i++)
if (!afs_dir_check_page(dvnode, req->pages[i],
req->actual_len))
- goto error_unlock_all;
+ goto error_unlock;
// TODO: Trim excess pages
set_bit(AFS_VNODE_DIR_VALID, &dvnode->flags);
}
+ downgrade_write(&dvnode->validate_lock);
success:
- i = req->nr_pages;
- while (i > 0)
- unlock_page(req->pages[--i]);
return req;
-error_unlock_all:
- i = req->nr_pages;
error_unlock:
- while (i > 0)
- unlock_page(req->pages[--i]);
+ up_write(&dvnode->validate_lock);
error:
afs_put_read(req);
_leave(" = %d", ret);
return ERR_PTR(ret);
content_has_grown:
- i = req->nr_pages;
- while (i > 0)
- unlock_page(req->pages[--i]);
+ up_write(&dvnode->validate_lock);
afs_put_read(req);
goto retry;
}
@@ -473,6 +470,7 @@
}
out:
+ up_read(&dvnode->validate_lock);
afs_put_read(req);
_leave(" = %d", ret);
return ret;
@@ -1143,7 +1141,7 @@
ret = -ERESTARTSYS;
if (afs_begin_vnode_operation(&fc, dvnode, key)) {
while (afs_select_fileserver(&fc)) {
- fc.cb_break = dvnode->cb_break + dvnode->cb_s_break;
+ fc.cb_break = afs_calc_vnode_cb_break(dvnode);
afs_fs_create(&fc, dentry->d_name.name, mode, data_version,
&newfid, &newstatus, &newcb);
}
@@ -1213,7 +1211,7 @@
ret = -ERESTARTSYS;
if (afs_begin_vnode_operation(&fc, dvnode, key)) {
while (afs_select_fileserver(&fc)) {
- fc.cb_break = dvnode->cb_break + dvnode->cb_s_break;
+ fc.cb_break = afs_calc_vnode_cb_break(dvnode);
afs_fs_remove(&fc, dentry->d_name.name, true,
data_version);
}
@@ -1316,7 +1314,7 @@
ret = -ERESTARTSYS;
if (afs_begin_vnode_operation(&fc, dvnode, key)) {
while (afs_select_fileserver(&fc)) {
- fc.cb_break = dvnode->cb_break + dvnode->cb_s_break;
+ fc.cb_break = afs_calc_vnode_cb_break(dvnode);
afs_fs_remove(&fc, dentry->d_name.name, false,
data_version);
}
@@ -1373,7 +1371,7 @@
ret = -ERESTARTSYS;
if (afs_begin_vnode_operation(&fc, dvnode, key)) {
while (afs_select_fileserver(&fc)) {
- fc.cb_break = dvnode->cb_break + dvnode->cb_s_break;
+ fc.cb_break = afs_calc_vnode_cb_break(dvnode);
afs_fs_create(&fc, dentry->d_name.name, mode, data_version,
&newfid, &newstatus, &newcb);
}
@@ -1443,8 +1441,8 @@
}
while (afs_select_fileserver(&fc)) {
- fc.cb_break = dvnode->cb_break + dvnode->cb_s_break;
- fc.cb_break_2 = vnode->cb_break + vnode->cb_s_break;
+ fc.cb_break = afs_calc_vnode_cb_break(dvnode);
+ fc.cb_break_2 = afs_calc_vnode_cb_break(vnode);
afs_fs_link(&fc, vnode, dentry->d_name.name, data_version);
}
@@ -1512,7 +1510,7 @@
ret = -ERESTARTSYS;
if (afs_begin_vnode_operation(&fc, dvnode, key)) {
while (afs_select_fileserver(&fc)) {
- fc.cb_break = dvnode->cb_break + dvnode->cb_s_break;
+ fc.cb_break = afs_calc_vnode_cb_break(dvnode);
afs_fs_symlink(&fc, dentry->d_name.name,
content, data_version,
&newfid, &newstatus);
@@ -1588,8 +1586,8 @@
}
}
while (afs_select_fileserver(&fc)) {
- fc.cb_break = orig_dvnode->cb_break + orig_dvnode->cb_s_break;
- fc.cb_break_2 = new_dvnode->cb_break + new_dvnode->cb_s_break;
+ fc.cb_break = afs_calc_vnode_cb_break(orig_dvnode);
+ fc.cb_break_2 = afs_calc_vnode_cb_break(new_dvnode);
afs_fs_rename(&fc, old_dentry->d_name.name,
new_dvnode, new_dentry->d_name.name,
orig_data_version, new_data_version);
diff --git a/fs/afs/file.c b/fs/afs/file.c
index c24c080..7d4f261 100644
--- a/fs/afs/file.c
+++ b/fs/afs/file.c
@@ -238,7 +238,7 @@
ret = -ERESTARTSYS;
if (afs_begin_vnode_operation(&fc, vnode, key)) {
while (afs_select_fileserver(&fc)) {
- fc.cb_break = vnode->cb_break + vnode->cb_s_break;
+ fc.cb_break = afs_calc_vnode_cb_break(vnode);
afs_fs_fetch_data(&fc, desc);
}
diff --git a/fs/afs/flock.c b/fs/afs/flock.c
index 7a0e017..dc62d15 100644
--- a/fs/afs/flock.c
+++ b/fs/afs/flock.c
@@ -86,7 +86,7 @@
ret = -ERESTARTSYS;
if (afs_begin_vnode_operation(&fc, vnode, key)) {
while (afs_select_fileserver(&fc)) {
- fc.cb_break = vnode->cb_break + vnode->cb_s_break;
+ fc.cb_break = afs_calc_vnode_cb_break(vnode);
afs_fs_set_lock(&fc, type);
}
@@ -117,7 +117,7 @@
ret = -ERESTARTSYS;
if (afs_begin_vnode_operation(&fc, vnode, key)) {
while (afs_select_current_fileserver(&fc)) {
- fc.cb_break = vnode->cb_break + vnode->cb_s_break;
+ fc.cb_break = afs_calc_vnode_cb_break(vnode);
afs_fs_extend_lock(&fc);
}
@@ -148,7 +148,7 @@
ret = -ERESTARTSYS;
if (afs_begin_vnode_operation(&fc, vnode, key)) {
while (afs_select_current_fileserver(&fc)) {
- fc.cb_break = vnode->cb_break + vnode->cb_s_break;
+ fc.cb_break = afs_calc_vnode_cb_break(vnode);
afs_fs_release_lock(&fc);
}
diff --git a/fs/afs/fsclient.c b/fs/afs/fsclient.c
index efacdb7..b273e1d 100644
--- a/fs/afs/fsclient.c
+++ b/fs/afs/fsclient.c
@@ -134,6 +134,7 @@
struct afs_read *read_req)
{
const struct afs_xdr_AFSFetchStatus *xdr = (const void *)*_bp;
+ bool inline_error = (call->operation_ID == afs_FS_InlineBulkStatus);
u64 data_version, size;
u32 type, abort_code;
u8 flags = 0;
@@ -142,13 +143,32 @@
if (vnode)
write_seqlock(&vnode->cb_lock);
+ abort_code = ntohl(xdr->abort_code);
+
if (xdr->if_version != htonl(AFS_FSTATUS_VERSION)) {
+ if (xdr->if_version == htonl(0) &&
+ abort_code != 0 &&
+ inline_error) {
+ /* The OpenAFS fileserver has a bug in FS.InlineBulkStatus
+ * whereby it doesn't set the interface version in the error
+ * case.
+ */
+ status->abort_code = abort_code;
+ ret = 0;
+ goto out;
+ }
+
pr_warn("Unknown AFSFetchStatus version %u\n", ntohl(xdr->if_version));
goto bad;
}
+ if (abort_code != 0 && inline_error) {
+ status->abort_code = abort_code;
+ ret = 0;
+ goto out;
+ }
+
type = ntohl(xdr->type);
- abort_code = ntohl(xdr->abort_code);
switch (type) {
case AFS_FTYPE_FILE:
case AFS_FTYPE_DIR:
@@ -165,13 +185,6 @@
}
status->type = type;
break;
- case AFS_FTYPE_INVALID:
- if (abort_code != 0) {
- status->abort_code = abort_code;
- ret = 0;
- goto out;
- }
- /* Fall through */
default:
goto bad;
}
@@ -248,7 +261,7 @@
write_seqlock(&vnode->cb_lock);
- if (call->cb_break == (vnode->cb_break + cbi->server->cb_s_break)) {
+ if (call->cb_break == afs_cb_break_sum(vnode, cbi)) {
vnode->cb_version = ntohl(*bp++);
cb_expiry = ntohl(*bp++);
vnode->cb_type = ntohl(*bp++);
diff --git a/fs/afs/inode.c b/fs/afs/inode.c
index 06194cf..479b7fd 100644
--- a/fs/afs/inode.c
+++ b/fs/afs/inode.c
@@ -108,7 +108,7 @@
ret = -ERESTARTSYS;
if (afs_begin_vnode_operation(&fc, vnode, key)) {
while (afs_select_fileserver(&fc)) {
- fc.cb_break = vnode->cb_break + vnode->cb_s_break;
+ fc.cb_break = afs_calc_vnode_cb_break(vnode);
afs_fs_fetch_file_status(&fc, NULL, new_inode);
}
@@ -393,15 +393,18 @@
read_seqlock_excl(&vnode->cb_lock);
if (test_bit(AFS_VNODE_CB_PROMISED, &vnode->flags)) {
- if (vnode->cb_s_break != vnode->cb_interest->server->cb_s_break) {
+ if (vnode->cb_s_break != vnode->cb_interest->server->cb_s_break ||
+ vnode->cb_v_break != vnode->volume->cb_v_break) {
vnode->cb_s_break = vnode->cb_interest->server->cb_s_break;
+ vnode->cb_v_break = vnode->volume->cb_v_break;
+ valid = false;
} else if (vnode->status.type == AFS_FTYPE_DIR &&
test_bit(AFS_VNODE_DIR_VALID, &vnode->flags) &&
vnode->cb_expires_at - 10 > now) {
- valid = true;
+ valid = true;
} else if (!test_bit(AFS_VNODE_ZAP_DATA, &vnode->flags) &&
vnode->cb_expires_at - 10 > now) {
- valid = true;
+ valid = true;
}
} else if (test_bit(AFS_VNODE_DELETED, &vnode->flags)) {
valid = true;
@@ -415,7 +418,7 @@
if (valid)
goto valid;
- mutex_lock(&vnode->validate_lock);
+ down_write(&vnode->validate_lock);
/* if the promise has expired, we need to check the server again to get
* a new promise - note that if the (parent) directory's metadata was
@@ -444,13 +447,13 @@
* different */
if (test_and_clear_bit(AFS_VNODE_ZAP_DATA, &vnode->flags))
afs_zap_data(vnode);
- mutex_unlock(&vnode->validate_lock);
+ up_write(&vnode->validate_lock);
valid:
_leave(" = 0");
return 0;
error_unlock:
- mutex_unlock(&vnode->validate_lock);
+ up_write(&vnode->validate_lock);
_leave(" = %d", ret);
return ret;
}
@@ -574,7 +577,7 @@
ret = -ERESTARTSYS;
if (afs_begin_vnode_operation(&fc, vnode, key)) {
while (afs_select_fileserver(&fc)) {
- fc.cb_break = vnode->cb_break + vnode->cb_s_break;
+ fc.cb_break = afs_calc_vnode_cb_break(vnode);
afs_fs_setattr(&fc, attr);
}
diff --git a/fs/afs/internal.h b/fs/afs/internal.h
index f8086ec..e3f8a46 100644
--- a/fs/afs/internal.h
+++ b/fs/afs/internal.h
@@ -396,6 +396,7 @@
#define AFS_SERVER_FL_PROBED 5 /* The fileserver has been probed */
#define AFS_SERVER_FL_PROBING 6 /* Fileserver is being probed */
#define AFS_SERVER_FL_NO_IBULK 7 /* Fileserver doesn't support FS.InlineBulkStatus */
+#define AFS_SERVER_FL_MAY_HAVE_CB 8 /* May have callbacks on this fileserver */
atomic_t usage;
u32 addr_version; /* Address list version */
@@ -433,6 +434,7 @@
unsigned short index; /* Server currently in use */
unsigned short vnovol_mask; /* Servers to be skipped due to VNOVOL */
unsigned int seq; /* Set to ->servers_seq when installed */
+ rwlock_t lock;
struct afs_server_entry servers[];
};
@@ -459,6 +461,9 @@
rwlock_t servers_lock; /* Lock for ->servers */
unsigned int servers_seq; /* Incremented each time ->servers changes */
+ unsigned cb_v_break; /* Break-everything counter. */
+ rwlock_t cb_break_lock;
+
afs_voltype_t type; /* type of volume */
short error;
char type_force; /* force volume type (suppress R/O -> R/W) */
@@ -494,7 +499,7 @@
#endif
struct afs_permits __rcu *permit_cache; /* cache of permits so far obtained */
struct mutex io_lock; /* Lock for serialising I/O on this mutex */
- struct mutex validate_lock; /* lock for validating this vnode */
+ struct rw_semaphore validate_lock; /* lock for validating this vnode */
spinlock_t wb_lock; /* lock for wb_keys */
spinlock_t lock; /* waitqueue/flags lock */
unsigned long flags;
@@ -519,6 +524,7 @@
/* outstanding callback notification on this file */
struct afs_cb_interest *cb_interest; /* Server on which this resides */
unsigned int cb_s_break; /* Mass break counter on ->server */
+ unsigned int cb_v_break; /* Mass break counter on ->volume */
unsigned int cb_break; /* Break counter on vnode */
seqlock_t cb_lock; /* Lock for ->cb_interest, ->status, ->cb_*break */
@@ -648,16 +654,29 @@
extern void afs_break_callback(struct afs_vnode *);
extern void afs_break_callbacks(struct afs_server *, size_t, struct afs_callback_break*);
-extern int afs_register_server_cb_interest(struct afs_vnode *, struct afs_server_entry *);
+extern int afs_register_server_cb_interest(struct afs_vnode *,
+ struct afs_server_list *, unsigned int);
extern void afs_put_cb_interest(struct afs_net *, struct afs_cb_interest *);
extern void afs_clear_callback_interests(struct afs_net *, struct afs_server_list *);
static inline struct afs_cb_interest *afs_get_cb_interest(struct afs_cb_interest *cbi)
{
- refcount_inc(&cbi->usage);
+ if (cbi)
+ refcount_inc(&cbi->usage);
return cbi;
}
+static inline unsigned int afs_calc_vnode_cb_break(struct afs_vnode *vnode)
+{
+ return vnode->cb_break + vnode->cb_s_break + vnode->cb_v_break;
+}
+
+static inline unsigned int afs_cb_break_sum(struct afs_vnode *vnode,
+ struct afs_cb_interest *cbi)
+{
+ return vnode->cb_break + cbi->server->cb_s_break + vnode->volume->cb_v_break;
+}
+
/*
* cell.c
*/
diff --git a/fs/afs/rotate.c b/fs/afs/rotate.c
index ac0feac..e065bc0 100644
--- a/fs/afs/rotate.c
+++ b/fs/afs/rotate.c
@@ -179,7 +179,7 @@
*/
if (fc->flags & AFS_FS_CURSOR_VNOVOL) {
fc->ac.error = -EREMOTEIO;
- goto failed;
+ goto next_server;
}
write_lock(&vnode->volume->servers_lock);
@@ -201,7 +201,7 @@
*/
if (vnode->volume->servers == fc->server_list) {
fc->ac.error = -EREMOTEIO;
- goto failed;
+ goto next_server;
}
/* Try again */
@@ -350,8 +350,8 @@
* break request before we've finished decoding the reply and
* installing the vnode.
*/
- fc->ac.error = afs_register_server_cb_interest(
- vnode, &fc->server_list->servers[fc->index]);
+ fc->ac.error = afs_register_server_cb_interest(vnode, fc->server_list,
+ fc->index);
if (fc->ac.error < 0)
goto failed;
@@ -369,8 +369,16 @@
if (!test_bit(AFS_SERVER_FL_PROBED, &server->flags)) {
fc->ac.alist = afs_get_addrlist(alist);
- if (!afs_probe_fileserver(fc))
- goto failed;
+ if (!afs_probe_fileserver(fc)) {
+ switch (fc->ac.error) {
+ case -ENOMEM:
+ case -ERESTARTSYS:
+ case -EINTR:
+ goto failed;
+ default:
+ goto next_server;
+ }
+ }
}
if (!fc->ac.alist)
diff --git a/fs/afs/rxrpc.c b/fs/afs/rxrpc.c
index 5c62639..0873594 100644
--- a/fs/afs/rxrpc.c
+++ b/fs/afs/rxrpc.c
@@ -41,6 +41,7 @@
{
struct sockaddr_rxrpc srx;
struct socket *socket;
+ unsigned int min_level;
int ret;
_enter("");
@@ -60,6 +61,12 @@
srx.transport.sin6.sin6_family = AF_INET6;
srx.transport.sin6.sin6_port = htons(AFS_CM_PORT);
+ min_level = RXRPC_SECURITY_ENCRYPT;
+ ret = kernel_setsockopt(socket, SOL_RXRPC, RXRPC_MIN_SECURITY_LEVEL,
+ (void *)&min_level, sizeof(min_level));
+ if (ret < 0)
+ goto error_2;
+
ret = kernel_bind(socket, (struct sockaddr *) &srx, sizeof(srx));
if (ret == -EADDRINUSE) {
srx.transport.sin6.sin6_port = 0;
@@ -482,8 +489,12 @@
state = READ_ONCE(call->state);
switch (ret) {
case 0:
- if (state == AFS_CALL_CL_PROC_REPLY)
+ if (state == AFS_CALL_CL_PROC_REPLY) {
+ if (call->cbi)
+ set_bit(AFS_SERVER_FL_MAY_HAVE_CB,
+ &call->cbi->server->flags);
goto call_complete;
+ }
ASSERTCMP(state, >, AFS_CALL_CL_PROC_REPLY);
goto done;
case -EINPROGRESS:
@@ -493,11 +504,6 @@
case -ECONNABORTED:
ASSERTCMP(state, ==, AFS_CALL_COMPLETE);
goto done;
- case -ENOTCONN:
- abort_code = RX_CALL_DEAD;
- rxrpc_kernel_abort_call(call->net->socket, call->rxcall,
- abort_code, ret, "KNC");
- goto local_abort;
case -ENOTSUPP:
abort_code = RXGEN_OPCODE;
rxrpc_kernel_abort_call(call->net->socket, call->rxcall,
diff --git a/fs/afs/security.c b/fs/afs/security.c
index cea2fff..1992b0f 100644
--- a/fs/afs/security.c
+++ b/fs/afs/security.c
@@ -147,8 +147,7 @@
break;
}
- if (cb_break != (vnode->cb_break +
- vnode->cb_interest->server->cb_s_break)) {
+ if (cb_break != afs_cb_break_sum(vnode, vnode->cb_interest)) {
changed = true;
break;
}
@@ -178,7 +177,7 @@
}
}
- if (cb_break != (vnode->cb_break + vnode->cb_interest->server->cb_s_break))
+ if (cb_break != afs_cb_break_sum(vnode, vnode->cb_interest))
goto someone_else_changed_it;
/* We need a ref on any permits list we want to copy as we'll have to
@@ -257,7 +256,7 @@
spin_lock(&vnode->lock);
zap = rcu_access_pointer(vnode->permit_cache);
- if (cb_break == (vnode->cb_break + vnode->cb_interest->server->cb_s_break) &&
+ if (cb_break == afs_cb_break_sum(vnode, vnode->cb_interest) &&
zap == permits)
rcu_assign_pointer(vnode->permit_cache, replacement);
else
diff --git a/fs/afs/server.c b/fs/afs/server.c
index 629c749..3af4625 100644
--- a/fs/afs/server.c
+++ b/fs/afs/server.c
@@ -67,12 +67,6 @@
sizeof(struct in6_addr));
if (diff == 0)
goto found;
- if (diff < 0) {
- // TODO: Sort the list
- //if (i == alist->nr_ipv4)
- // goto not_found;
- break;
- }
}
}
} else {
@@ -87,17 +81,10 @@
(u32 __force)b->sin6_addr.s6_addr32[3]);
if (diff == 0)
goto found;
- if (diff < 0) {
- // TODO: Sort the list
- //if (i == 0)
- // goto not_found;
- break;
- }
}
}
}
- //not_found:
server = NULL;
found:
if (server && !atomic_inc_not_zero(&server->usage))
@@ -395,14 +382,16 @@
struct afs_addr_list *alist = rcu_access_pointer(server->addresses);
struct afs_addr_cursor ac = {
.alist = alist,
- .addr = &alist->addrs[0],
.start = alist->index,
- .index = alist->index,
+ .index = 0,
+ .addr = &alist->addrs[alist->index],
.error = 0,
};
_enter("%p", server);
- afs_fs_give_up_all_callbacks(net, server, &ac, NULL);
+ if (test_bit(AFS_SERVER_FL_MAY_HAVE_CB, &server->flags))
+ afs_fs_give_up_all_callbacks(net, server, &ac, NULL);
+
call_rcu(&server->rcu, afs_server_rcu);
afs_dec_servers_outstanding(net);
}
diff --git a/fs/afs/server_list.c b/fs/afs/server_list.c
index 0f8dc4c..8a5760a 100644
--- a/fs/afs/server_list.c
+++ b/fs/afs/server_list.c
@@ -49,6 +49,7 @@
goto error;
refcount_set(&slist->usage, 1);
+ rwlock_init(&slist->lock);
/* Make sure a records exists for each server in the list. */
for (i = 0; i < vldb->nr_servers; i++) {
@@ -64,9 +65,11 @@
goto error_2;
}
- /* Insertion-sort by server pointer */
+ /* Insertion-sort by UUID */
for (j = 0; j < slist->nr_servers; j++)
- if (slist->servers[j].server >= server)
+ if (memcmp(&slist->servers[j].server->uuid,
+ &server->uuid,
+ sizeof(server->uuid)) >= 0)
break;
if (j < slist->nr_servers) {
if (slist->servers[j].server == server) {
diff --git a/fs/afs/super.c b/fs/afs/super.c
index 65081ec..9e5d796 100644
--- a/fs/afs/super.c
+++ b/fs/afs/super.c
@@ -590,7 +590,7 @@
memset(vnode, 0, sizeof(*vnode));
inode_init_once(&vnode->vfs_inode);
mutex_init(&vnode->io_lock);
- mutex_init(&vnode->validate_lock);
+ init_rwsem(&vnode->validate_lock);
spin_lock_init(&vnode->wb_lock);
spin_lock_init(&vnode->lock);
INIT_LIST_HEAD(&vnode->wb_keys);
@@ -688,7 +688,7 @@
if (afs_begin_vnode_operation(&fc, vnode, key)) {
fc.flags |= AFS_FS_CURSOR_NO_VSLEEP;
while (afs_select_fileserver(&fc)) {
- fc.cb_break = vnode->cb_break + vnode->cb_s_break;
+ fc.cb_break = afs_calc_vnode_cb_break(vnode);
afs_fs_get_volume_status(&fc, &vs);
}
diff --git a/fs/afs/write.c b/fs/afs/write.c
index c164698..8b39e6e 100644
--- a/fs/afs/write.c
+++ b/fs/afs/write.c
@@ -351,7 +351,7 @@
ret = -ERESTARTSYS;
if (afs_begin_vnode_operation(&fc, vnode, wbk->key)) {
while (afs_select_fileserver(&fc)) {
- fc.cb_break = vnode->cb_break + vnode->cb_s_break;
+ fc.cb_break = afs_calc_vnode_cb_break(vnode);
afs_fs_store_data(&fc, mapping, first, last, offset, to);
}
diff --git a/fs/hfsplus/super.c b/fs/hfsplus/super.c
index 513c357..a6c0f54 100644
--- a/fs/hfsplus/super.c
+++ b/fs/hfsplus/super.c
@@ -588,6 +588,7 @@
return 0;
out_put_hidden_dir:
+ cancel_delayed_work_sync(&sbi->sync_work);
iput(sbi->hidden_dir);
out_put_root:
dput(sb->s_root);
diff --git a/fs/proc/base.c b/fs/proc/base.c
index 1b2ede6..1a76d75 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -261,7 +261,7 @@
* Inherently racy -- command line shares address space
* with code and data.
*/
- rv = access_remote_vm(mm, arg_end - 1, &c, 1, 0);
+ rv = access_remote_vm(mm, arg_end - 1, &c, 1, FOLL_ANON);
if (rv <= 0)
goto out_free_page;
@@ -279,7 +279,7 @@
int nr_read;
_count = min3(count, len, PAGE_SIZE);
- nr_read = access_remote_vm(mm, p, page, _count, 0);
+ nr_read = access_remote_vm(mm, p, page, _count, FOLL_ANON);
if (nr_read < 0)
rv = nr_read;
if (nr_read <= 0)
@@ -325,7 +325,7 @@
bool final;
_count = min3(count, len, PAGE_SIZE);
- nr_read = access_remote_vm(mm, p, page, _count, 0);
+ nr_read = access_remote_vm(mm, p, page, _count, FOLL_ANON);
if (nr_read < 0)
rv = nr_read;
if (nr_read <= 0)
@@ -946,7 +946,7 @@
max_len = min_t(size_t, PAGE_SIZE, count);
this_len = min(max_len, this_len);
- retval = access_remote_vm(mm, (env_start + src), page, this_len, 0);
+ retval = access_remote_vm(mm, (env_start + src), page, this_len, FOLL_ANON);
if (retval <= 0) {
ret = retval;
diff --git a/include/linux/efi.h b/include/linux/efi.h
index f1b7d68..3016d8c 100644
--- a/include/linux/efi.h
+++ b/include/linux/efi.h
@@ -395,8 +395,8 @@
u32 attributes;
u32 get_bar_attributes;
u32 set_bar_attributes;
- uint64_t romsize;
- void *romimage;
+ u64 romsize;
+ u32 romimage;
} efi_pci_io_protocol_32;
typedef struct {
@@ -415,8 +415,8 @@
u64 attributes;
u64 get_bar_attributes;
u64 set_bar_attributes;
- uint64_t romsize;
- void *romimage;
+ u64 romsize;
+ u64 romimage;
} efi_pci_io_protocol_64;
typedef struct {
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 6930c63..6d6e79c 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -1045,13 +1045,7 @@
#ifdef CONFIG_HAVE_KVM_IRQ_ROUTING
-#ifdef CONFIG_S390
-#define KVM_MAX_IRQ_ROUTES 4096 //FIXME: we can have more than that...
-#elif defined(CONFIG_ARM64)
-#define KVM_MAX_IRQ_ROUTES 4096
-#else
-#define KVM_MAX_IRQ_ROUTES 1024
-#endif
+#define KVM_MAX_IRQ_ROUTES 4096 /* might need extension/rework in the future */
bool kvm_arch_can_set_irq_routing(struct kvm *kvm);
int kvm_set_irq_routing(struct kvm *kvm,
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 1ac1f06..c6fa9a2 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -2466,6 +2466,13 @@
return VM_FAULT_NOPAGE;
}
+static inline vm_fault_t vmf_error(int err)
+{
+ if (err == -ENOMEM)
+ return VM_FAULT_OOM;
+ return VM_FAULT_SIGBUS;
+}
+
struct page *follow_page_mask(struct vm_area_struct *vma,
unsigned long address, unsigned int foll_flags,
unsigned int *page_mask);
@@ -2493,6 +2500,7 @@
#define FOLL_MLOCK 0x1000 /* lock present pages */
#define FOLL_REMOTE 0x2000 /* we are working on non-current tsk/mm */
#define FOLL_COW 0x4000 /* internal GUP flag */
+#define FOLL_ANON 0x8000 /* don't do file mappings */
static inline int vm_fault_to_errno(int vm_fault, int foll_flags)
{
diff --git a/include/linux/mtd/map.h b/include/linux/mtd/map.h
index b5b43f9..01b990e 100644
--- a/include/linux/mtd/map.h
+++ b/include/linux/mtd/map.h
@@ -312,7 +312,7 @@
({ \
int i, ret = 1; \
for (i = 0; i < map_words(map); i++) { \
- if (((val1).x[i] & (val2).x[i]) != (val2).x[i]) { \
+ if (((val1).x[i] & (val2).x[i]) != (val3).x[i]) { \
ret = 0; \
break; \
} \
diff --git a/include/linux/mtd/rawnand.h b/include/linux/mtd/rawnand.h
index 5dad59b..17c9194 100644
--- a/include/linux/mtd/rawnand.h
+++ b/include/linux/mtd/rawnand.h
@@ -867,12 +867,18 @@
* tBERS (during an erase) which all of them are u64 values that cannot be
* divided by usual kernel macros and must be handled with the special
* DIV_ROUND_UP_ULL() macro.
+ *
+ * Cast to type of dividend is needed here to guarantee that the result won't
+ * be an unsigned long long when the dividend is an unsigned long (or smaller),
+ * which is what the compiler does when it sees ternary operator with 2
+ * different return types (picks the largest type to make sure there's no
+ * loss).
*/
-#define __DIVIDE(dividend, divisor) ({ \
- sizeof(dividend) == sizeof(u32) ? \
- DIV_ROUND_UP(dividend, divisor) : \
- DIV_ROUND_UP_ULL(dividend, divisor); \
- })
+#define __DIVIDE(dividend, divisor) ({ \
+ (__typeof__(dividend))(sizeof(dividend) <= sizeof(unsigned long) ? \
+ DIV_ROUND_UP(dividend, divisor) : \
+ DIV_ROUND_UP_ULL(dividend, divisor)); \
+ })
#define PSEC_TO_NSEC(x) __DIVIDE(x, 1000)
#define PSEC_TO_MSEC(x) __DIVIDE(x, 1000000000)
diff --git a/include/trace/events/afs.h b/include/trace/events/afs.h
index f0820554..d0a341b 100644
--- a/include/trace/events/afs.h
+++ b/include/trace/events/afs.h
@@ -575,6 +575,48 @@
__entry->call, __entry->error, __entry->where)
);
+TRACE_EVENT(afs_cm_no_server,
+ TP_PROTO(struct afs_call *call, struct sockaddr_rxrpc *srx),
+
+ TP_ARGS(call, srx),
+
+ TP_STRUCT__entry(
+ __field(unsigned int, call )
+ __field(unsigned int, op_id )
+ __field_struct(struct sockaddr_rxrpc, srx )
+ ),
+
+ TP_fast_assign(
+ __entry->call = call->debug_id;
+ __entry->op_id = call->operation_ID;
+ memcpy(&__entry->srx, srx, sizeof(__entry->srx));
+ ),
+
+ TP_printk("c=%08x op=%u %pISpc",
+ __entry->call, __entry->op_id, &__entry->srx.transport)
+ );
+
+TRACE_EVENT(afs_cm_no_server_u,
+ TP_PROTO(struct afs_call *call, const uuid_t *uuid),
+
+ TP_ARGS(call, uuid),
+
+ TP_STRUCT__entry(
+ __field(unsigned int, call )
+ __field(unsigned int, op_id )
+ __field_struct(uuid_t, uuid )
+ ),
+
+ TP_fast_assign(
+ __entry->call = call->debug_id;
+ __entry->op_id = call->operation_ID;
+ memcpy(&__entry->uuid, uuid, sizeof(__entry->uuid));
+ ),
+
+ TP_printk("c=%08x op=%u %pU",
+ __entry->call, __entry->op_id, &__entry->uuid)
+ );
+
#endif /* _TRACE_AFS_H */
/* This part must be outside protection */
diff --git a/include/trace/events/xen.h b/include/trace/events/xen.h
index 7dd8f34..fdcf88b 100644
--- a/include/trace/events/xen.h
+++ b/include/trace/events/xen.h
@@ -352,22 +352,6 @@
DEFINE_XEN_MMU_PGD_EVENT(xen_mmu_pgd_pin);
DEFINE_XEN_MMU_PGD_EVENT(xen_mmu_pgd_unpin);
-TRACE_EVENT(xen_mmu_flush_tlb_all,
- TP_PROTO(int x),
- TP_ARGS(x),
- TP_STRUCT__entry(__array(char, x, 0)),
- TP_fast_assign((void)x),
- TP_printk("%s", "")
- );
-
-TRACE_EVENT(xen_mmu_flush_tlb,
- TP_PROTO(int x),
- TP_ARGS(x),
- TP_STRUCT__entry(__array(char, x, 0)),
- TP_fast_assign((void)x),
- TP_printk("%s", "")
- );
-
TRACE_EVENT(xen_mmu_flush_tlb_one_user,
TP_PROTO(unsigned long addr),
TP_ARGS(addr),
diff --git a/lib/radix-tree.c b/lib/radix-tree.c
index da9e10c..43e0cbe 100644
--- a/lib/radix-tree.c
+++ b/lib/radix-tree.c
@@ -1612,11 +1612,9 @@
static void __rcu **skip_siblings(struct radix_tree_node **nodep,
void __rcu **slot, struct radix_tree_iter *iter)
{
- void *sib = node_to_entry(slot - 1);
-
while (iter->index < iter->next_index) {
*nodep = rcu_dereference_raw(*slot);
- if (*nodep && *nodep != sib)
+ if (*nodep && !is_sibling_entry(iter->node, *nodep))
return slot;
slot++;
iter->index = __radix_tree_iter_add(iter, 1);
@@ -1631,7 +1629,7 @@
struct radix_tree_iter *iter, unsigned flags)
{
unsigned tag = flags & RADIX_TREE_ITER_TAG_MASK;
- struct radix_tree_node *node = rcu_dereference_raw(*slot);
+ struct radix_tree_node *node;
slot = skip_siblings(&node, slot, iter);
diff --git a/lib/test_bitmap.c b/lib/test_bitmap.c
index de16f78..6cd7d07 100644
--- a/lib/test_bitmap.c
+++ b/lib/test_bitmap.c
@@ -331,23 +331,32 @@
unsigned int start, nbits;
for (start = 0; start < 1024; start += 8) {
- memset(bmap1, 0x5a, sizeof(bmap1));
- memset(bmap2, 0x5a, sizeof(bmap2));
for (nbits = 0; nbits < 1024 - start; nbits += 8) {
+ memset(bmap1, 0x5a, sizeof(bmap1));
+ memset(bmap2, 0x5a, sizeof(bmap2));
+
bitmap_set(bmap1, start, nbits);
__bitmap_set(bmap2, start, nbits);
- if (!bitmap_equal(bmap1, bmap2, 1024))
+ if (!bitmap_equal(bmap1, bmap2, 1024)) {
printk("set not equal %d %d\n", start, nbits);
- if (!__bitmap_equal(bmap1, bmap2, 1024))
+ failed_tests++;
+ }
+ if (!__bitmap_equal(bmap1, bmap2, 1024)) {
printk("set not __equal %d %d\n", start, nbits);
+ failed_tests++;
+ }
bitmap_clear(bmap1, start, nbits);
__bitmap_clear(bmap2, start, nbits);
- if (!bitmap_equal(bmap1, bmap2, 1024))
+ if (!bitmap_equal(bmap1, bmap2, 1024)) {
printk("clear not equal %d %d\n", start, nbits);
- if (!__bitmap_equal(bmap1, bmap2, 1024))
+ failed_tests++;
+ }
+ if (!__bitmap_equal(bmap1, bmap2, 1024)) {
printk("clear not __equal %d %d\n", start,
nbits);
+ failed_tests++;
+ }
}
}
}
diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index 30c0cb8..23920c5 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -1669,19 +1669,22 @@
return number(buf, end, (unsigned long int)ptr, spec);
}
-static bool have_filled_random_ptr_key __read_mostly;
+static DEFINE_STATIC_KEY_TRUE(not_filled_random_ptr_key);
static siphash_key_t ptr_key __read_mostly;
+static void enable_ptr_key_workfn(struct work_struct *work)
+{
+ get_random_bytes(&ptr_key, sizeof(ptr_key));
+ /* Needs to run from preemptible context */
+ static_branch_disable(¬_filled_random_ptr_key);
+}
+
+static DECLARE_WORK(enable_ptr_key_work, enable_ptr_key_workfn);
+
static void fill_random_ptr_key(struct random_ready_callback *unused)
{
- get_random_bytes(&ptr_key, sizeof(ptr_key));
- /*
- * have_filled_random_ptr_key==true is dependent on get_random_bytes().
- * ptr_to_id() needs to see have_filled_random_ptr_key==true
- * after get_random_bytes() returns.
- */
- smp_mb();
- WRITE_ONCE(have_filled_random_ptr_key, true);
+ /* This may be in an interrupt handler. */
+ queue_work(system_unbound_wq, &enable_ptr_key_work);
}
static struct random_ready_callback random_ready = {
@@ -1695,7 +1698,8 @@
if (!ret) {
return 0;
} else if (ret == -EALREADY) {
- fill_random_ptr_key(&random_ready);
+ /* This is in preemptible context */
+ enable_ptr_key_workfn(&enable_ptr_key_work);
return 0;
}
@@ -1709,7 +1713,7 @@
unsigned long hashval;
const int default_width = 2 * sizeof(ptr);
- if (unlikely(!have_filled_random_ptr_key)) {
+ if (static_branch_unlikely(¬_filled_random_ptr_key)) {
spec.field_width = default_width;
/* string length must be less than default_width */
return string(buf, end, "(ptrval)", spec);
diff --git a/mm/Kconfig b/mm/Kconfig
index d5004d8..e14c015 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -636,6 +636,7 @@
default n
depends on NO_BOOTMEM
depends on !FLATMEM
+ depends on !NEED_PER_CPU_KM
help
Ordinarily all struct pages are initialised during early boot in a
single thread. On very large machines this can take a considerable
diff --git a/mm/gup.c b/mm/gup.c
index 76af4cf..541904a 100644
--- a/mm/gup.c
+++ b/mm/gup.c
@@ -544,6 +544,9 @@
if (vm_flags & (VM_IO | VM_PFNMAP))
return -EFAULT;
+ if (gup_flags & FOLL_ANON && !vma_is_anonymous(vma))
+ return -EFAULT;
+
if (write) {
if (!(vm_flags & VM_WRITE)) {
if (!(gup_flags & FOLL_FORCE))
diff --git a/mm/mmap.c b/mm/mmap.c
index 78e14fa..fc41c05 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -1327,7 +1327,7 @@
static inline u64 file_mmap_size_max(struct file *file, struct inode *inode)
{
if (S_ISREG(inode->i_mode))
- return inode->i_sb->s_maxbytes;
+ return MAX_LFS_FILESIZE;
if (S_ISBLK(inode->i_mode))
return MAX_LFS_FILESIZE;
diff --git a/samples/bpf/Makefile b/samples/bpf/Makefile
index 4d6a6ed..0929476 100644
--- a/samples/bpf/Makefile
+++ b/samples/bpf/Makefile
@@ -255,7 +255,7 @@
$(obj)/%.o: $(src)/%.c
$(CLANG) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(EXTRA_CFLAGS) -I$(obj) \
-I$(srctree)/tools/testing/selftests/bpf/ \
- -D__KERNEL__ -Wno-unused-value -Wno-pointer-sign \
+ -D__KERNEL__ -D__BPF_TRACING__ -Wno-unused-value -Wno-pointer-sign \
-D__TARGET_ARCH_$(ARCH) -Wno-compare-distinct-pointer-types \
-Wno-gnu-variable-sized-type-not-at-end \
-Wno-address-of-packed-member -Wno-tautological-compare \
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index 4cafe6a..be5817d 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -4576,6 +4576,7 @@
static int selinux_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen)
{
struct sock *sk = sock->sk;
+ struct sk_security_struct *sksec = sk->sk_security;
u16 family;
int err;
@@ -4587,11 +4588,11 @@
family = sk->sk_family;
if (family == PF_INET || family == PF_INET6) {
char *addrp;
- struct sk_security_struct *sksec = sk->sk_security;
struct common_audit_data ad;
struct lsm_network_audit net = {0,};
struct sockaddr_in *addr4 = NULL;
struct sockaddr_in6 *addr6 = NULL;
+ u16 family_sa = address->sa_family;
unsigned short snum;
u32 sid, node_perm;
@@ -4601,11 +4602,20 @@
* need to check address->sa_family as it is possible to have
* sk->sk_family = PF_INET6 with addr->sa_family = AF_INET.
*/
- switch (address->sa_family) {
+ switch (family_sa) {
+ case AF_UNSPEC:
case AF_INET:
if (addrlen < sizeof(struct sockaddr_in))
return -EINVAL;
addr4 = (struct sockaddr_in *)address;
+ if (family_sa == AF_UNSPEC) {
+ /* see __inet_bind(), we only want to allow
+ * AF_UNSPEC if the address is INADDR_ANY
+ */
+ if (addr4->sin_addr.s_addr != htonl(INADDR_ANY))
+ goto err_af;
+ family_sa = AF_INET;
+ }
snum = ntohs(addr4->sin_port);
addrp = (char *)&addr4->sin_addr.s_addr;
break;
@@ -4617,15 +4627,14 @@
addrp = (char *)&addr6->sin6_addr.s6_addr;
break;
default:
- /* Note that SCTP services expect -EINVAL, whereas
- * others expect -EAFNOSUPPORT.
- */
- if (sksec->sclass == SECCLASS_SCTP_SOCKET)
- return -EINVAL;
- else
- return -EAFNOSUPPORT;
+ goto err_af;
}
+ ad.type = LSM_AUDIT_DATA_NET;
+ ad.u.net = &net;
+ ad.u.net->sport = htons(snum);
+ ad.u.net->family = family_sa;
+
if (snum) {
int low, high;
@@ -4637,10 +4646,6 @@
snum, &sid);
if (err)
goto out;
- ad.type = LSM_AUDIT_DATA_NET;
- ad.u.net = &net;
- ad.u.net->sport = htons(snum);
- ad.u.net->family = family;
err = avc_has_perm(&selinux_state,
sksec->sid, sid,
sksec->sclass,
@@ -4672,16 +4677,11 @@
break;
}
- err = sel_netnode_sid(addrp, family, &sid);
+ err = sel_netnode_sid(addrp, family_sa, &sid);
if (err)
goto out;
- ad.type = LSM_AUDIT_DATA_NET;
- ad.u.net = &net;
- ad.u.net->sport = htons(snum);
- ad.u.net->family = family;
-
- if (address->sa_family == AF_INET)
+ if (family_sa == AF_INET)
ad.u.net->v4info.saddr = addr4->sin_addr.s_addr;
else
ad.u.net->v6info.saddr = addr6->sin6_addr;
@@ -4694,6 +4694,11 @@
}
out:
return err;
+err_af:
+ /* Note that SCTP services expect -EINVAL, others -EAFNOSUPPORT. */
+ if (sksec->sclass == SECCLASS_SCTP_SOCKET)
+ return -EINVAL;
+ return -EAFNOSUPPORT;
}
/* This supports connect(2) and SCTP connect services such as sctp_connectx(3)
@@ -4771,7 +4776,7 @@
ad.type = LSM_AUDIT_DATA_NET;
ad.u.net = &net;
ad.u.net->dport = htons(snum);
- ad.u.net->family = sk->sk_family;
+ ad.u.net->family = address->sa_family;
err = avc_has_perm(&selinux_state,
sksec->sid, sid, sksec->sclass, perm, &ad);
if (err)
@@ -5272,6 +5277,7 @@
while (walk_size < addrlen) {
addr = addr_buf;
switch (addr->sa_family) {
+ case AF_UNSPEC:
case AF_INET:
len = sizeof(struct sockaddr_in);
break;
@@ -5279,7 +5285,7 @@
len = sizeof(struct sockaddr_in6);
break;
default:
- return -EAFNOSUPPORT;
+ return -EINVAL;
}
err = -EINVAL;
diff --git a/sound/core/control_compat.c b/sound/core/control_compat.c
index a848836..507fd52 100644
--- a/sound/core/control_compat.c
+++ b/sound/core/control_compat.c
@@ -396,8 +396,7 @@
if (copy_from_user(&data->id, &data32->id, sizeof(data->id)) ||
copy_from_user(&data->type, &data32->type, 3 * sizeof(u32)))
goto error;
- if (get_user(data->owner, &data32->owner) ||
- get_user(data->type, &data32->type))
+ if (get_user(data->owner, &data32->owner))
goto error;
switch (data->type) {
case SNDRV_CTL_ELEM_TYPE_BOOLEAN:
diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index b0c8c79..a0c93b9 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -2210,6 +2210,8 @@
SND_PCI_QUIRK(0x1849, 0x0c0c, "Asrock B85M-ITX", 0),
/* https://bugzilla.redhat.com/show_bug.cgi?id=1525104 */
SND_PCI_QUIRK(0x1043, 0x8733, "Asus Prime X370-Pro", 0),
+ /* https://bugzilla.redhat.com/show_bug.cgi?id=1572975 */
+ SND_PCI_QUIRK(0x17aa, 0x36a7, "Lenovo C50 All in one", 0),
/* https://bugzilla.kernel.org/show_bug.cgi?id=198611 */
SND_PCI_QUIRK(0x17aa, 0x2227, "Lenovo X1 Carbon 3rd Gen", 0),
{}
diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 2dd34dd..01a6643 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -2363,6 +2363,7 @@
SND_PCI_QUIRK_VENDOR(0x1462, "MSI", ALC882_FIXUP_GPIO3),
SND_PCI_QUIRK(0x147b, 0x107a, "Abit AW9D-MAX", ALC882_FIXUP_ABIT_AW9D_MAX),
SND_PCI_QUIRK(0x1558, 0x9501, "Clevo P950HR", ALC1220_FIXUP_CLEVO_P950),
+ SND_PCI_QUIRK(0x1558, 0x95e2, "Clevo P950ER", ALC1220_FIXUP_CLEVO_P950),
SND_PCI_QUIRK_VENDOR(0x1558, "Clevo laptop", ALC882_FIXUP_EAPD),
SND_PCI_QUIRK(0x161f, 0x2054, "Medion laptop", ALC883_FIXUP_EAPD),
SND_PCI_QUIRK(0x17aa, 0x3a0d, "Lenovo Y530", ALC882_FIXUP_LENOVO_Y530),
diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c
index 344d7b0..bb5ab7a 100644
--- a/sound/usb/mixer.c
+++ b/sound/usb/mixer.c
@@ -967,6 +967,14 @@
}
break;
+ case USB_ID(0x0d8c, 0x0103):
+ if (!strcmp(kctl->id.name, "PCM Playback Volume")) {
+ usb_audio_info(chip,
+ "set volume quirk for CM102-A+/102S+\n");
+ cval->min = -256;
+ }
+ break;
+
case USB_ID(0x0471, 0x0101):
case USB_ID(0x0471, 0x0104):
case USB_ID(0x0471, 0x0105):
diff --git a/sound/usb/stream.c b/sound/usb/stream.c
index 956be9f..5ed3345 100644
--- a/sound/usb/stream.c
+++ b/sound/usb/stream.c
@@ -576,7 +576,7 @@
if (protocol == UAC_VERSION_1) {
attributes = csep->bmAttributes;
- } else {
+ } else if (protocol == UAC_VERSION_2) {
struct uac2_iso_endpoint_descriptor *csep2 =
(struct uac2_iso_endpoint_descriptor *) csep;
@@ -585,6 +585,13 @@
/* emulate the endpoint attributes of a v1 device */
if (csep2->bmControls & UAC2_CONTROL_PITCH)
attributes |= UAC_EP_CS_ATTR_PITCH_CONTROL;
+ } else { /* UAC_VERSION_3 */
+ struct uac3_iso_endpoint_descriptor *csep3 =
+ (struct uac3_iso_endpoint_descriptor *) csep;
+
+ /* emulate the endpoint attributes of a v1 device */
+ if (le32_to_cpu(csep3->bmControls) & UAC2_CONTROL_PITCH)
+ attributes |= UAC_EP_CS_ATTR_PITCH_CONTROL;
}
return attributes;
diff --git a/tools/include/linux/spinlock.h b/tools/include/linux/spinlock.h
index b21b586..1738c03 100644
--- a/tools/include/linux/spinlock.h
+++ b/tools/include/linux/spinlock.h
@@ -6,8 +6,9 @@
#include <stdbool.h>
#define spinlock_t pthread_mutex_t
-#define DEFINE_SPINLOCK(x) pthread_mutex_t x = PTHREAD_MUTEX_INITIALIZER;
+#define DEFINE_SPINLOCK(x) pthread_mutex_t x = PTHREAD_MUTEX_INITIALIZER
#define __SPIN_LOCK_UNLOCKED(x) (pthread_mutex_t)PTHREAD_MUTEX_INITIALIZER
+#define spin_lock_init(x) pthread_mutex_init(x, NULL)
#define spin_lock_irqsave(x, f) (void)f, pthread_mutex_lock(x)
#define spin_unlock_irqrestore(x, f) (void)f, pthread_mutex_unlock(x)
diff --git a/tools/objtool/arch/x86/include/asm/insn.h b/tools/objtool/arch/x86/include/asm/insn.h
index b3e32b0..c2c01f8 100644
--- a/tools/objtool/arch/x86/include/asm/insn.h
+++ b/tools/objtool/arch/x86/include/asm/insn.h
@@ -208,4 +208,22 @@
return insn_offset_displacement(insn) + insn->displacement.nbytes;
}
+#define POP_SS_OPCODE 0x1f
+#define MOV_SREG_OPCODE 0x8e
+
+/*
+ * Intel SDM Vol.3A 6.8.3 states;
+ * "Any single-step trap that would be delivered following the MOV to SS
+ * instruction or POP to SS instruction (because EFLAGS.TF is 1) is
+ * suppressed."
+ * This function returns true if @insn is MOV SS or POP SS. On these
+ * instructions, single stepping is suppressed.
+ */
+static inline int insn_masking_exception(struct insn *insn)
+{
+ return insn->opcode.bytes[0] == POP_SS_OPCODE ||
+ (insn->opcode.bytes[0] == MOV_SREG_OPCODE &&
+ X86_MODRM_REG(insn->modrm.bytes[0]) == 2);
+}
+
#endif /* _ASM_X86_INSN_H */
diff --git a/tools/objtool/check.c b/tools/objtool/check.c
index 5409f6f..3a31b23 100644
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -59,6 +59,31 @@
return next;
}
+static struct instruction *next_insn_same_func(struct objtool_file *file,
+ struct instruction *insn)
+{
+ struct instruction *next = list_next_entry(insn, list);
+ struct symbol *func = insn->func;
+
+ if (!func)
+ return NULL;
+
+ if (&next->list != &file->insn_list && next->func == func)
+ return next;
+
+ /* Check if we're already in the subfunction: */
+ if (func == func->cfunc)
+ return NULL;
+
+ /* Move to the subfunction: */
+ return find_insn(file, func->cfunc->sec, func->cfunc->offset);
+}
+
+#define func_for_each_insn_all(file, func, insn) \
+ for (insn = find_insn(file, func->sec, func->offset); \
+ insn; \
+ insn = next_insn_same_func(file, insn))
+
#define func_for_each_insn(file, func, insn) \
for (insn = find_insn(file, func->sec, func->offset); \
insn && &insn->list != &file->insn_list && \
@@ -149,10 +174,14 @@
if (!strcmp(func->name, global_noreturns[i]))
return 1;
- if (!func->sec)
+ if (!func->len)
return 0;
- func_for_each_insn(file, func, insn) {
+ insn = find_insn(file, func->sec, func->offset);
+ if (!insn->func)
+ return 0;
+
+ func_for_each_insn_all(file, func, insn) {
empty = false;
if (insn->type == INSN_RETURN)
@@ -167,35 +196,28 @@
* case, the function's dead-end status depends on whether the target
* of the sibling call returns.
*/
- func_for_each_insn(file, func, insn) {
- if (insn->sec != func->sec ||
- insn->offset >= func->offset + func->len)
- break;
-
+ func_for_each_insn_all(file, func, insn) {
if (insn->type == INSN_JUMP_UNCONDITIONAL) {
struct instruction *dest = insn->jump_dest;
- struct symbol *dest_func;
if (!dest)
/* sibling call to another file */
return 0;
- if (dest->sec != func->sec ||
- dest->offset < func->offset ||
- dest->offset >= func->offset + func->len) {
- /* local sibling call */
- dest_func = find_symbol_by_offset(dest->sec,
- dest->offset);
- if (!dest_func)
- continue;
+ if (dest->func && dest->func->pfunc != insn->func->pfunc) {
+ /* local sibling call */
if (recursion == 5) {
- WARN_FUNC("infinite recursion (objtool bug!)",
- dest->sec, dest->offset);
- return -1;
+ /*
+ * Infinite recursion: two functions
+ * have sibling calls to each other.
+ * This is a very rare case. It means
+ * they aren't dead ends.
+ */
+ return 0;
}
- return __dead_end_function(file, dest_func,
+ return __dead_end_function(file, dest->func,
recursion + 1);
}
}
@@ -422,7 +444,7 @@
if (!ignore_func(file, func))
continue;
- func_for_each_insn(file, func, insn)
+ func_for_each_insn_all(file, func, insn)
insn->ignore = true;
}
}
@@ -782,30 +804,35 @@
return ret;
}
-static int add_switch_table(struct objtool_file *file, struct symbol *func,
- struct instruction *insn, struct rela *table,
- struct rela *next_table)
+static int add_switch_table(struct objtool_file *file, struct instruction *insn,
+ struct rela *table, struct rela *next_table)
{
struct rela *rela = table;
struct instruction *alt_insn;
struct alternative *alt;
+ struct symbol *pfunc = insn->func->pfunc;
+ unsigned int prev_offset = 0;
list_for_each_entry_from(rela, &file->rodata->rela->rela_list, list) {
if (rela == next_table)
break;
- if (rela->sym->sec != insn->sec ||
- rela->addend <= func->offset ||
- rela->addend >= func->offset + func->len)
+ /* Make sure the switch table entries are consecutive: */
+ if (prev_offset && rela->offset != prev_offset + 8)
break;
- alt_insn = find_insn(file, insn->sec, rela->addend);
- if (!alt_insn) {
- WARN("%s: can't find instruction at %s+0x%x",
- file->rodata->rela->name, insn->sec->name,
- rela->addend);
- return -1;
- }
+ /* Detect function pointers from contiguous objects: */
+ if (rela->sym->sec == pfunc->sec &&
+ rela->addend == pfunc->offset)
+ break;
+
+ alt_insn = find_insn(file, rela->sym->sec, rela->addend);
+ if (!alt_insn)
+ break;
+
+ /* Make sure the jmp dest is in the function or subfunction: */
+ if (alt_insn->func->pfunc != pfunc)
+ break;
alt = malloc(sizeof(*alt));
if (!alt) {
@@ -815,6 +842,13 @@
alt->insn = alt_insn;
list_add_tail(&alt->list, &insn->alts);
+ prev_offset = rela->offset;
+ }
+
+ if (!prev_offset) {
+ WARN_FUNC("can't find switch jump table",
+ insn->sec, insn->offset);
+ return -1;
}
return 0;
@@ -869,40 +903,21 @@
{
struct rela *text_rela, *rodata_rela;
struct instruction *orig_insn = insn;
+ unsigned long table_offset;
- text_rela = find_rela_by_dest_range(insn->sec, insn->offset, insn->len);
- if (text_rela && text_rela->sym == file->rodata->sym) {
- /* case 1 */
- rodata_rela = find_rela_by_dest(file->rodata,
- text_rela->addend);
- if (rodata_rela)
- return rodata_rela;
-
- /* case 2 */
- rodata_rela = find_rela_by_dest(file->rodata,
- text_rela->addend + 4);
- if (!rodata_rela)
- return NULL;
-
- file->ignore_unreachables = true;
- return rodata_rela;
- }
-
- /* case 3 */
/*
* Backward search using the @first_jump_src links, these help avoid
* much of the 'in between' code. Which avoids us getting confused by
* it.
*/
- for (insn = list_prev_entry(insn, list);
-
+ for (;
&insn->list != &file->insn_list &&
insn->sec == func->sec &&
insn->offset >= func->offset;
insn = insn->first_jump_src ?: list_prev_entry(insn, list)) {
- if (insn->type == INSN_JUMP_DYNAMIC)
+ if (insn != orig_insn && insn->type == INSN_JUMP_DYNAMIC)
break;
/* allow small jumps within the range */
@@ -918,18 +933,29 @@
if (!text_rela || text_rela->sym != file->rodata->sym)
continue;
+ table_offset = text_rela->addend;
+ if (text_rela->type == R_X86_64_PC32)
+ table_offset += 4;
+
/*
* Make sure the .rodata address isn't associated with a
* symbol. gcc jump tables are anonymous data.
*/
- if (find_symbol_containing(file->rodata, text_rela->addend))
+ if (find_symbol_containing(file->rodata, table_offset))
continue;
- rodata_rela = find_rela_by_dest(file->rodata, text_rela->addend);
- if (!rodata_rela)
- continue;
+ rodata_rela = find_rela_by_dest(file->rodata, table_offset);
+ if (rodata_rela) {
+ /*
+ * Use of RIP-relative switch jumps is quite rare, and
+ * indicates a rare GCC quirk/bug which can leave dead
+ * code behind.
+ */
+ if (text_rela->type == R_X86_64_PC32)
+ file->ignore_unreachables = true;
- return rodata_rela;
+ return rodata_rela;
+ }
}
return NULL;
@@ -943,7 +969,7 @@
struct rela *rela, *prev_rela = NULL;
int ret;
- func_for_each_insn(file, func, insn) {
+ func_for_each_insn_all(file, func, insn) {
if (!last)
last = insn;
@@ -974,8 +1000,7 @@
* the beginning of another switch table in the same function.
*/
if (prev_jump) {
- ret = add_switch_table(file, func, prev_jump, prev_rela,
- rela);
+ ret = add_switch_table(file, prev_jump, prev_rela, rela);
if (ret)
return ret;
}
@@ -985,7 +1010,7 @@
}
if (prev_jump) {
- ret = add_switch_table(file, func, prev_jump, prev_rela, NULL);
+ ret = add_switch_table(file, prev_jump, prev_rela, NULL);
if (ret)
return ret;
}
@@ -1749,15 +1774,13 @@
while (1) {
next_insn = next_insn_same_sec(file, insn);
-
- if (file->c_file && func && insn->func && func != insn->func) {
+ if (file->c_file && func && insn->func && func != insn->func->pfunc) {
WARN("%s() falls through to next function %s()",
func->name, insn->func->name);
return 1;
}
- if (insn->func)
- func = insn->func;
+ func = insn->func ? insn->func->pfunc : NULL;
if (func && insn->ignore) {
WARN_FUNC("BUG: why am I validating an ignored function?",
@@ -1778,7 +1801,7 @@
i = insn;
save_insn = NULL;
- func_for_each_insn_continue_reverse(file, func, i) {
+ func_for_each_insn_continue_reverse(file, insn->func, i) {
if (i->save) {
save_insn = i;
break;
@@ -1865,7 +1888,7 @@
case INSN_JUMP_UNCONDITIONAL:
if (insn->jump_dest &&
(!func || !insn->jump_dest->func ||
- func == insn->jump_dest->func)) {
+ insn->jump_dest->func->pfunc == func)) {
ret = validate_branch(file, insn->jump_dest,
state);
if (ret)
@@ -2060,7 +2083,7 @@
for_each_sec(file, sec) {
list_for_each_entry(func, &sec->symbol_list, list) {
- if (func->type != STT_FUNC)
+ if (func->type != STT_FUNC || func->pfunc != func)
continue;
insn = find_insn(file, sec, func->offset);
diff --git a/tools/objtool/elf.c b/tools/objtool/elf.c
index c1c3386..4e60e10 100644
--- a/tools/objtool/elf.c
+++ b/tools/objtool/elf.c
@@ -79,6 +79,19 @@
return NULL;
}
+struct symbol *find_symbol_by_name(struct elf *elf, const char *name)
+{
+ struct section *sec;
+ struct symbol *sym;
+
+ list_for_each_entry(sec, &elf->sections, list)
+ list_for_each_entry(sym, &sec->symbol_list, list)
+ if (!strcmp(sym->name, name))
+ return sym;
+
+ return NULL;
+}
+
struct symbol *find_symbol_containing(struct section *sec, unsigned long offset)
{
struct symbol *sym;
@@ -203,10 +216,11 @@
static int read_symbols(struct elf *elf)
{
- struct section *symtab;
- struct symbol *sym;
+ struct section *symtab, *sec;
+ struct symbol *sym, *pfunc;
struct list_head *entry, *tmp;
int symbols_nr, i;
+ char *coldstr;
symtab = find_section_by_name(elf, ".symtab");
if (!symtab) {
@@ -281,6 +295,30 @@
hash_add(sym->sec->symbol_hash, &sym->hash, sym->idx);
}
+ /* Create parent/child links for any cold subfunctions */
+ list_for_each_entry(sec, &elf->sections, list) {
+ list_for_each_entry(sym, &sec->symbol_list, list) {
+ if (sym->type != STT_FUNC)
+ continue;
+ sym->pfunc = sym->cfunc = sym;
+ coldstr = strstr(sym->name, ".cold.");
+ if (coldstr) {
+ coldstr[0] = '\0';
+ pfunc = find_symbol_by_name(elf, sym->name);
+ coldstr[0] = '.';
+
+ if (!pfunc) {
+ WARN("%s(): can't find parent function",
+ sym->name);
+ goto err;
+ }
+
+ sym->pfunc = pfunc;
+ pfunc->cfunc = sym;
+ }
+ }
+ }
+
return 0;
err:
diff --git a/tools/objtool/elf.h b/tools/objtool/elf.h
index d86e2ff1..de5cd2d 100644
--- a/tools/objtool/elf.h
+++ b/tools/objtool/elf.h
@@ -61,6 +61,7 @@
unsigned char bind, type;
unsigned long offset;
unsigned int len;
+ struct symbol *pfunc, *cfunc;
};
struct rela {
@@ -86,6 +87,7 @@
struct elf *elf_open(const char *name, int flags);
struct section *find_section_by_name(struct elf *elf, const char *name);
struct symbol *find_symbol_by_offset(struct section *sec, unsigned long offset);
+struct symbol *find_symbol_by_name(struct elf *elf, const char *name);
struct symbol *find_symbol_containing(struct section *sec, unsigned long offset);
struct rela *find_rela_by_dest(struct section *sec, unsigned long offset);
struct rela *find_rela_by_dest_range(struct section *sec, unsigned long offset,
diff --git a/tools/testing/radix-tree/Makefile b/tools/testing/radix-tree/Makefile
index fa7ee36..db66f8a 100644
--- a/tools/testing/radix-tree/Makefile
+++ b/tools/testing/radix-tree/Makefile
@@ -17,7 +17,7 @@
LDFLAGS += -m32
endif
-targets: mapshift $(TARGETS)
+targets: generated/map-shift.h $(TARGETS)
main: $(OFILES)
@@ -42,9 +42,7 @@
idr.c: ../../../lib/idr.c
sed -e 's/^static //' -e 's/__always_inline //' -e 's/inline //' < $< > $@
-.PHONY: mapshift
-
-mapshift:
+generated/map-shift.h:
@if ! grep -qws $(SHIFT) generated/map-shift.h; then \
echo "#define RADIX_TREE_MAP_SHIFT $(SHIFT)" > \
generated/map-shift.h; \
diff --git a/tools/testing/radix-tree/multiorder.c b/tools/testing/radix-tree/multiorder.c
index 59245b3..7bf4056 100644
--- a/tools/testing/radix-tree/multiorder.c
+++ b/tools/testing/radix-tree/multiorder.c
@@ -16,6 +16,7 @@
#include <linux/radix-tree.h>
#include <linux/slab.h>
#include <linux/errno.h>
+#include <pthread.h>
#include "test.h"
@@ -624,6 +625,67 @@
item_kill_tree(&tree);
}
+bool stop_iteration = false;
+
+static void *creator_func(void *ptr)
+{
+ /* 'order' is set up to ensure we have sibling entries */
+ unsigned int order = RADIX_TREE_MAP_SHIFT - 1;
+ struct radix_tree_root *tree = ptr;
+ int i;
+
+ for (i = 0; i < 10000; i++) {
+ item_insert_order(tree, 0, order);
+ item_delete_rcu(tree, 0);
+ }
+
+ stop_iteration = true;
+ return NULL;
+}
+
+static void *iterator_func(void *ptr)
+{
+ struct radix_tree_root *tree = ptr;
+ struct radix_tree_iter iter;
+ struct item *item;
+ void **slot;
+
+ while (!stop_iteration) {
+ rcu_read_lock();
+ radix_tree_for_each_slot(slot, tree, &iter, 0) {
+ item = radix_tree_deref_slot(slot);
+
+ if (!item)
+ continue;
+ if (radix_tree_deref_retry(item)) {
+ slot = radix_tree_iter_retry(&iter);
+ continue;
+ }
+
+ item_sanity(item, iter.index);
+ }
+ rcu_read_unlock();
+ }
+ return NULL;
+}
+
+static void multiorder_iteration_race(void)
+{
+ const int num_threads = sysconf(_SC_NPROCESSORS_ONLN);
+ pthread_t worker_thread[num_threads];
+ RADIX_TREE(tree, GFP_KERNEL);
+ int i;
+
+ pthread_create(&worker_thread[0], NULL, &creator_func, &tree);
+ for (i = 1; i < num_threads; i++)
+ pthread_create(&worker_thread[i], NULL, &iterator_func, &tree);
+
+ for (i = 0; i < num_threads; i++)
+ pthread_join(worker_thread[i], NULL);
+
+ item_kill_tree(&tree);
+}
+
void multiorder_checks(void)
{
int i;
@@ -644,6 +706,7 @@
multiorder_join();
multiorder_split();
multiorder_account();
+ multiorder_iteration_race();
radix_tree_cpu_dead(0);
}
diff --git a/tools/testing/radix-tree/test.c b/tools/testing/radix-tree/test.c
index 5978ab1..def6015 100644
--- a/tools/testing/radix-tree/test.c
+++ b/tools/testing/radix-tree/test.c
@@ -75,6 +75,25 @@
return 0;
}
+static void item_free_rcu(struct rcu_head *head)
+{
+ struct item *item = container_of(head, struct item, rcu_head);
+
+ free(item);
+}
+
+int item_delete_rcu(struct radix_tree_root *root, unsigned long index)
+{
+ struct item *item = radix_tree_delete(root, index);
+
+ if (item) {
+ item_sanity(item, index);
+ call_rcu(&item->rcu_head, item_free_rcu);
+ return 1;
+ }
+ return 0;
+}
+
void item_check_present(struct radix_tree_root *root, unsigned long index)
{
struct item *item;
diff --git a/tools/testing/radix-tree/test.h b/tools/testing/radix-tree/test.h
index d9c031d..31f1d9b 100644
--- a/tools/testing/radix-tree/test.h
+++ b/tools/testing/radix-tree/test.h
@@ -5,6 +5,7 @@
#include <linux/rcupdate.h>
struct item {
+ struct rcu_head rcu_head;
unsigned long index;
unsigned int order;
};
@@ -12,9 +13,11 @@
struct item *item_create(unsigned long index, unsigned int order);
int __item_insert(struct radix_tree_root *root, struct item *item);
int item_insert(struct radix_tree_root *root, unsigned long index);
+void item_sanity(struct item *item, unsigned long index);
int item_insert_order(struct radix_tree_root *root, unsigned long index,
unsigned order);
int item_delete(struct radix_tree_root *root, unsigned long index);
+int item_delete_rcu(struct radix_tree_root *root, unsigned long index);
struct item *item_lookup(struct radix_tree_root *root, unsigned long index);
void item_check_present(struct radix_tree_root *root, unsigned long index);
diff --git a/tools/testing/selftests/kvm/Makefile b/tools/testing/selftests/kvm/Makefile
index 2ddcc96..d9d0031 100644
--- a/tools/testing/selftests/kvm/Makefile
+++ b/tools/testing/selftests/kvm/Makefile
@@ -15,7 +15,7 @@
INSTALL_HDR_PATH = $(top_srcdir)/usr
LINUX_HDR_PATH = $(INSTALL_HDR_PATH)/include/
-CFLAGS += -O2 -g -std=gnu99 -I$(LINUX_HDR_PATH) -Iinclude -I$(<D)
+CFLAGS += -O2 -g -std=gnu99 -I$(LINUX_HDR_PATH) -Iinclude -I$(<D) -I..
# After inclusion, $(OUTPUT) is defined and
# $(TEST_GEN_PROGS) starts with $(OUTPUT)/
diff --git a/tools/testing/selftests/kvm/include/test_util.h b/tools/testing/selftests/kvm/include/test_util.h
index 7ab98e4..ac53730 100644
--- a/tools/testing/selftests/kvm/include/test_util.h
+++ b/tools/testing/selftests/kvm/include/test_util.h
@@ -19,6 +19,7 @@
#include <errno.h>
#include <unistd.h>
#include <fcntl.h>
+#include "kselftest.h"
ssize_t test_write(int fd, const void *buf, size_t count);
ssize_t test_read(int fd, void *buf, size_t count);
diff --git a/tools/testing/selftests/kvm/lib/kvm_util.c b/tools/testing/selftests/kvm/lib/kvm_util.c
index 2cedfda..37e2a78 100644
--- a/tools/testing/selftests/kvm/lib/kvm_util.c
+++ b/tools/testing/selftests/kvm/lib/kvm_util.c
@@ -50,8 +50,8 @@
int kvm_fd;
kvm_fd = open(KVM_DEV_PATH, O_RDONLY);
- TEST_ASSERT(kvm_fd >= 0, "open %s failed, rc: %i errno: %i",
- KVM_DEV_PATH, kvm_fd, errno);
+ if (kvm_fd < 0)
+ exit(KSFT_SKIP);
ret = ioctl(kvm_fd, KVM_CHECK_EXTENSION, cap);
TEST_ASSERT(ret != -1, "KVM_CHECK_EXTENSION IOCTL failed,\n"
@@ -91,8 +91,8 @@
vm->mode = mode;
kvm_fd = open(KVM_DEV_PATH, perm);
- TEST_ASSERT(kvm_fd >= 0, "open %s failed, rc: %i errno: %i",
- KVM_DEV_PATH, kvm_fd, errno);
+ if (kvm_fd < 0)
+ exit(KSFT_SKIP);
/* Create VM. */
vm->fd = ioctl(kvm_fd, KVM_CREATE_VM, NULL);
@@ -418,8 +418,8 @@
cpuid = allocate_kvm_cpuid2();
kvm_fd = open(KVM_DEV_PATH, O_RDONLY);
- TEST_ASSERT(kvm_fd >= 0, "open %s failed, rc: %i errno: %i",
- KVM_DEV_PATH, kvm_fd, errno);
+ if (kvm_fd < 0)
+ exit(KSFT_SKIP);
ret = ioctl(kvm_fd, KVM_GET_SUPPORTED_CPUID, cpuid);
TEST_ASSERT(ret == 0, "KVM_GET_SUPPORTED_CPUID failed %d %d\n",
@@ -675,8 +675,8 @@
int dev_fd, ret;
dev_fd = open(KVM_DEV_PATH, O_RDONLY);
- TEST_ASSERT(dev_fd >= 0, "%s open %s failed, rc: %i errno: %i",
- __func__, KVM_DEV_PATH, dev_fd, errno);
+ if (dev_fd < 0)
+ exit(KSFT_SKIP);
ret = ioctl(dev_fd, KVM_GET_VCPU_MMAP_SIZE, NULL);
TEST_ASSERT(ret >= sizeof(struct kvm_run),
diff --git a/tools/testing/selftests/kvm/sync_regs_test.c b/tools/testing/selftests/kvm/sync_regs_test.c
index 428e947..eae1ece 100644
--- a/tools/testing/selftests/kvm/sync_regs_test.c
+++ b/tools/testing/selftests/kvm/sync_regs_test.c
@@ -85,6 +85,9 @@
{
}
+#define TEST_SYNC_FIELDS (KVM_SYNC_X86_REGS|KVM_SYNC_X86_SREGS|KVM_SYNC_X86_EVENTS)
+#define INVALID_SYNC_FIELD 0x80000000
+
int main(int argc, char *argv[])
{
struct kvm_vm *vm;
@@ -98,9 +101,14 @@
setbuf(stdout, NULL);
cap = kvm_check_cap(KVM_CAP_SYNC_REGS);
- TEST_ASSERT((unsigned long)cap == KVM_SYNC_X86_VALID_FIELDS,
- "KVM_CAP_SYNC_REGS (0x%x) != KVM_SYNC_X86_VALID_FIELDS (0x%lx)\n",
- cap, KVM_SYNC_X86_VALID_FIELDS);
+ if ((cap & TEST_SYNC_FIELDS) != TEST_SYNC_FIELDS) {
+ fprintf(stderr, "KVM_CAP_SYNC_REGS not supported, skipping test\n");
+ exit(KSFT_SKIP);
+ }
+ if ((cap & INVALID_SYNC_FIELD) != 0) {
+ fprintf(stderr, "The \"invalid\" field is not invalid, skipping test\n");
+ exit(KSFT_SKIP);
+ }
/* Create VM */
vm = vm_create_default(VCPU_ID, guest_code);
@@ -108,7 +116,14 @@
run = vcpu_state(vm, VCPU_ID);
/* Request reading invalid register set from VCPU. */
- run->kvm_valid_regs = KVM_SYNC_X86_VALID_FIELDS << 1;
+ run->kvm_valid_regs = INVALID_SYNC_FIELD;
+ rv = _vcpu_run(vm, VCPU_ID);
+ TEST_ASSERT(rv < 0 && errno == EINVAL,
+ "Invalid kvm_valid_regs did not cause expected KVM_RUN error: %d\n",
+ rv);
+ vcpu_state(vm, VCPU_ID)->kvm_valid_regs = 0;
+
+ run->kvm_valid_regs = INVALID_SYNC_FIELD | TEST_SYNC_FIELDS;
rv = _vcpu_run(vm, VCPU_ID);
TEST_ASSERT(rv < 0 && errno == EINVAL,
"Invalid kvm_valid_regs did not cause expected KVM_RUN error: %d\n",
@@ -116,7 +131,14 @@
vcpu_state(vm, VCPU_ID)->kvm_valid_regs = 0;
/* Request setting invalid register set into VCPU. */
- run->kvm_dirty_regs = KVM_SYNC_X86_VALID_FIELDS << 1;
+ run->kvm_dirty_regs = INVALID_SYNC_FIELD;
+ rv = _vcpu_run(vm, VCPU_ID);
+ TEST_ASSERT(rv < 0 && errno == EINVAL,
+ "Invalid kvm_dirty_regs did not cause expected KVM_RUN error: %d\n",
+ rv);
+ vcpu_state(vm, VCPU_ID)->kvm_dirty_regs = 0;
+
+ run->kvm_dirty_regs = INVALID_SYNC_FIELD | TEST_SYNC_FIELDS;
rv = _vcpu_run(vm, VCPU_ID);
TEST_ASSERT(rv < 0 && errno == EINVAL,
"Invalid kvm_dirty_regs did not cause expected KVM_RUN error: %d\n",
@@ -125,7 +147,7 @@
/* Request and verify all valid register sets. */
/* TODO: BUILD TIME CHECK: TEST_ASSERT(KVM_SYNC_X86_NUM_FIELDS != 3); */
- run->kvm_valid_regs = KVM_SYNC_X86_VALID_FIELDS;
+ run->kvm_valid_regs = TEST_SYNC_FIELDS;
rv = _vcpu_run(vm, VCPU_ID);
TEST_ASSERT(run->exit_reason == KVM_EXIT_IO,
"Unexpected exit reason: %u (%s),\n",
@@ -146,7 +168,7 @@
run->s.regs.sregs.apic_base = 1 << 11;
/* TODO run->s.regs.events.XYZ = ABC; */
- run->kvm_valid_regs = KVM_SYNC_X86_VALID_FIELDS;
+ run->kvm_valid_regs = TEST_SYNC_FIELDS;
run->kvm_dirty_regs = KVM_SYNC_X86_REGS | KVM_SYNC_X86_SREGS;
rv = _vcpu_run(vm, VCPU_ID);
TEST_ASSERT(run->exit_reason == KVM_EXIT_IO,
@@ -172,7 +194,7 @@
/* Clear kvm_dirty_regs bits, verify new s.regs values are
* overwritten with existing guest values.
*/
- run->kvm_valid_regs = KVM_SYNC_X86_VALID_FIELDS;
+ run->kvm_valid_regs = TEST_SYNC_FIELDS;
run->kvm_dirty_regs = 0;
run->s.regs.regs.r11 = 0xDEADBEEF;
rv = _vcpu_run(vm, VCPU_ID);
@@ -211,7 +233,7 @@
* with kvm_sync_regs values.
*/
run->kvm_valid_regs = 0;
- run->kvm_dirty_regs = KVM_SYNC_X86_VALID_FIELDS;
+ run->kvm_dirty_regs = TEST_SYNC_FIELDS;
run->s.regs.regs.r11 = 0xBBBB;
rv = _vcpu_run(vm, VCPU_ID);
TEST_ASSERT(run->exit_reason == KVM_EXIT_IO,
diff --git a/tools/testing/selftests/kvm/vmx_tsc_adjust_test.c b/tools/testing/selftests/kvm/vmx_tsc_adjust_test.c
index 8f7f620..aaa6332 100644
--- a/tools/testing/selftests/kvm/vmx_tsc_adjust_test.c
+++ b/tools/testing/selftests/kvm/vmx_tsc_adjust_test.c
@@ -189,8 +189,8 @@
struct kvm_cpuid_entry2 *entry = kvm_get_supported_cpuid_entry(1);
if (!(entry->ecx & CPUID_VMX)) {
- printf("nested VMX not enabled, skipping test");
- return 0;
+ fprintf(stderr, "nested VMX not enabled, skipping test\n");
+ exit(KSFT_SKIP);
}
vm = vm_create_default_vmx(VCPU_ID, (void *) l1_guest_code);
diff --git a/virt/kvm/arm/vgic/vgic-debug.c b/virt/kvm/arm/vgic/vgic-debug.c
index 10b3817..4ffc0b5 100644
--- a/virt/kvm/arm/vgic/vgic-debug.c
+++ b/virt/kvm/arm/vgic/vgic-debug.c
@@ -211,6 +211,7 @@
struct vgic_state_iter *iter = (struct vgic_state_iter *)v;
struct vgic_irq *irq;
struct kvm_vcpu *vcpu = NULL;
+ unsigned long flags;
if (iter->dist_id == 0) {
print_dist_state(s, &kvm->arch.vgic);
@@ -227,9 +228,9 @@
irq = &kvm->arch.vgic.spis[iter->intid - VGIC_NR_PRIVATE_IRQS];
}
- spin_lock(&irq->irq_lock);
+ spin_lock_irqsave(&irq->irq_lock, flags);
print_irq_state(s, irq, vcpu);
- spin_unlock(&irq->irq_lock);
+ spin_unlock_irqrestore(&irq->irq_lock, flags);
return 0;
}
diff --git a/virt/kvm/arm/vgic/vgic-its.c b/virt/kvm/arm/vgic/vgic-its.c
index a8f07243..4ed79c9 100644
--- a/virt/kvm/arm/vgic/vgic-its.c
+++ b/virt/kvm/arm/vgic/vgic-its.c
@@ -52,6 +52,7 @@
{
struct vgic_dist *dist = &kvm->arch.vgic;
struct vgic_irq *irq = vgic_get_irq(kvm, NULL, intid), *oldirq;
+ unsigned long flags;
int ret;
/* In this case there is no put, since we keep the reference. */
@@ -71,7 +72,7 @@
irq->intid = intid;
irq->target_vcpu = vcpu;
- spin_lock(&dist->lpi_list_lock);
+ spin_lock_irqsave(&dist->lpi_list_lock, flags);
/*
* There could be a race with another vgic_add_lpi(), so we need to
@@ -99,7 +100,7 @@
dist->lpi_list_count++;
out_unlock:
- spin_unlock(&dist->lpi_list_lock);
+ spin_unlock_irqrestore(&dist->lpi_list_lock, flags);
/*
* We "cache" the configuration table entries in our struct vgic_irq's.
@@ -280,8 +281,8 @@
int ret;
unsigned long flags;
- ret = kvm_read_guest(kvm, propbase + irq->intid - GIC_LPI_OFFSET,
- &prop, 1);
+ ret = kvm_read_guest_lock(kvm, propbase + irq->intid - GIC_LPI_OFFSET,
+ &prop, 1);
if (ret)
return ret;
@@ -315,6 +316,7 @@
{
struct vgic_dist *dist = &vcpu->kvm->arch.vgic;
struct vgic_irq *irq;
+ unsigned long flags;
u32 *intids;
int irq_count, i = 0;
@@ -330,7 +332,7 @@
if (!intids)
return -ENOMEM;
- spin_lock(&dist->lpi_list_lock);
+ spin_lock_irqsave(&dist->lpi_list_lock, flags);
list_for_each_entry(irq, &dist->lpi_list_head, lpi_list) {
if (i == irq_count)
break;
@@ -339,7 +341,7 @@
continue;
intids[i++] = irq->intid;
}
- spin_unlock(&dist->lpi_list_lock);
+ spin_unlock_irqrestore(&dist->lpi_list_lock, flags);
*intid_ptr = intids;
return i;
@@ -348,10 +350,11 @@
static int update_affinity(struct vgic_irq *irq, struct kvm_vcpu *vcpu)
{
int ret = 0;
+ unsigned long flags;
- spin_lock(&irq->irq_lock);
+ spin_lock_irqsave(&irq->irq_lock, flags);
irq->target_vcpu = vcpu;
- spin_unlock(&irq->irq_lock);
+ spin_unlock_irqrestore(&irq->irq_lock, flags);
if (irq->hw) {
struct its_vlpi_map map;
@@ -441,8 +444,9 @@
* this very same byte in the last iteration. Reuse that.
*/
if (byte_offset != last_byte_offset) {
- ret = kvm_read_guest(vcpu->kvm, pendbase + byte_offset,
- &pendmask, 1);
+ ret = kvm_read_guest_lock(vcpu->kvm,
+ pendbase + byte_offset,
+ &pendmask, 1);
if (ret) {
kfree(intids);
return ret;
@@ -786,7 +790,7 @@
return false;
/* Each 1st level entry is represented by a 64-bit value. */
- if (kvm_read_guest(its->dev->kvm,
+ if (kvm_read_guest_lock(its->dev->kvm,
BASER_ADDRESS(baser) + index * sizeof(indirect_ptr),
&indirect_ptr, sizeof(indirect_ptr)))
return false;
@@ -1367,8 +1371,8 @@
cbaser = CBASER_ADDRESS(its->cbaser);
while (its->cwriter != its->creadr) {
- int ret = kvm_read_guest(kvm, cbaser + its->creadr,
- cmd_buf, ITS_CMD_SIZE);
+ int ret = kvm_read_guest_lock(kvm, cbaser + its->creadr,
+ cmd_buf, ITS_CMD_SIZE);
/*
* If kvm_read_guest() fails, this could be due to the guest
* programming a bogus value in CBASER or something else going
@@ -1893,7 +1897,7 @@
int next_offset;
size_t byte_offset;
- ret = kvm_read_guest(kvm, gpa, entry, esz);
+ ret = kvm_read_guest_lock(kvm, gpa, entry, esz);
if (ret)
return ret;
@@ -2263,7 +2267,7 @@
int ret;
BUG_ON(esz > sizeof(val));
- ret = kvm_read_guest(kvm, gpa, &val, esz);
+ ret = kvm_read_guest_lock(kvm, gpa, &val, esz);
if (ret)
return ret;
val = le64_to_cpu(val);
diff --git a/virt/kvm/arm/vgic/vgic-v3.c b/virt/kvm/arm/vgic/vgic-v3.c
index c7423f3..bdcf8e7 100644
--- a/virt/kvm/arm/vgic/vgic-v3.c
+++ b/virt/kvm/arm/vgic/vgic-v3.c
@@ -344,7 +344,7 @@
bit_nr = irq->intid % BITS_PER_BYTE;
ptr = pendbase + byte_offset;
- ret = kvm_read_guest(kvm, ptr, &val, 1);
+ ret = kvm_read_guest_lock(kvm, ptr, &val, 1);
if (ret)
return ret;
@@ -397,7 +397,7 @@
ptr = pendbase + byte_offset;
if (byte_offset != last_byte_offset) {
- ret = kvm_read_guest(kvm, ptr, &val, 1);
+ ret = kvm_read_guest_lock(kvm, ptr, &val, 1);
if (ret)
return ret;
last_byte_offset = byte_offset;
diff --git a/virt/kvm/arm/vgic/vgic.c b/virt/kvm/arm/vgic/vgic.c
index 97bfba8..33c8325 100644
--- a/virt/kvm/arm/vgic/vgic.c
+++ b/virt/kvm/arm/vgic/vgic.c
@@ -43,9 +43,13 @@
* kvm->lock (mutex)
* its->cmd_lock (mutex)
* its->its_lock (mutex)
- * vgic_cpu->ap_list_lock
- * kvm->lpi_list_lock
- * vgic_irq->irq_lock
+ * vgic_cpu->ap_list_lock must be taken with IRQs disabled
+ * kvm->lpi_list_lock must be taken with IRQs disabled
+ * vgic_irq->irq_lock must be taken with IRQs disabled
+ *
+ * As the ap_list_lock might be taken from the timer interrupt handler,
+ * we have to disable IRQs before taking this lock and everything lower
+ * than it.
*
* If you need to take multiple locks, always take the upper lock first,
* then the lower ones, e.g. first take the its_lock, then the irq_lock.
@@ -72,8 +76,9 @@
{
struct vgic_dist *dist = &kvm->arch.vgic;
struct vgic_irq *irq = NULL;
+ unsigned long flags;
- spin_lock(&dist->lpi_list_lock);
+ spin_lock_irqsave(&dist->lpi_list_lock, flags);
list_for_each_entry(irq, &dist->lpi_list_head, lpi_list) {
if (irq->intid != intid)
@@ -89,7 +94,7 @@
irq = NULL;
out_unlock:
- spin_unlock(&dist->lpi_list_lock);
+ spin_unlock_irqrestore(&dist->lpi_list_lock, flags);
return irq;
}
@@ -134,19 +139,20 @@
void vgic_put_irq(struct kvm *kvm, struct vgic_irq *irq)
{
struct vgic_dist *dist = &kvm->arch.vgic;
+ unsigned long flags;
if (irq->intid < VGIC_MIN_LPI)
return;
- spin_lock(&dist->lpi_list_lock);
+ spin_lock_irqsave(&dist->lpi_list_lock, flags);
if (!kref_put(&irq->refcount, vgic_irq_release)) {
- spin_unlock(&dist->lpi_list_lock);
+ spin_unlock_irqrestore(&dist->lpi_list_lock, flags);
return;
};
list_del(&irq->lpi_list);
dist->lpi_list_count--;
- spin_unlock(&dist->lpi_list_lock);
+ spin_unlock_irqrestore(&dist->lpi_list_lock, flags);
kfree(irq);
}