Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 updates from Martin Schwidefsky:
"There are two memory management related changes, the CMMA support for
KVM to avoid swap-in of freed pages and the split page table lock for
the PMD level. These two come with common code changes in mm/.
A fix for the long standing theoretical TLB flush problem, this one
comes with a common code change in kernel/sched/.
Another set of changes is Heikos uaccess work, included is the initial
set of patches with more to come.
And fixes and cleanups as usual"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (36 commits)
s390/con3270: optionally disable auto update
s390/mm: remove unecessary parameter from pgste_ipte_notify
s390/mm: remove unnecessary parameter from gmap_do_ipte_notify
s390/mm: fixing comment so that parameter name match
s390/smp: limit number of cpus in possible cpu mask
hypfs: Add clarification for "weight_min" attribute
s390: update defconfigs
s390/ptrace: add support for PTRACE_SINGLEBLOCK
s390/perf: make print_debug_cf() static
s390/topology: Remove call to update_cpu_masks()
s390/compat: remove compat exec domain
s390: select CONFIG_TTY for use of tty in unconditional keyboard driver
s390/appldata_os: fix cpu array size calculation
s390/checksum: remove memset() within csum_partial_copy_from_user()
s390/uaccess: remove copy_from_user_real()
s390/sclp_early: Return correct HSA block count also for zero
s390: add some drivers/subsystems to the MAINTAINERS file
s390: improve debug feature usage
s390/airq: add support for irq ranges
s390/mm: enable split page table lock for PMD level
...
diff --git a/MAINTAINERS b/MAINTAINERS
index 900d98e..79031a5 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -7405,10 +7405,26 @@
S: Supported
F: arch/s390/
F: drivers/s390/
-F: block/partitions/ibm.c
F: Documentation/s390/
F: Documentation/DocBook/s390*
+S390 COMMON I/O LAYER
+M: Sebastian Ott <sebott@linux.vnet.ibm.com>
+M: Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
+L: linux-s390@vger.kernel.org
+W: http://www.ibm.com/developerworks/linux/linux390/
+S: Supported
+F: drivers/s390/cio/
+
+S390 DASD DRIVER
+M: Stefan Weinhuber <wein@de.ibm.com>
+M: Stefan Haberland <stefan.haberland@de.ibm.com>
+L: linux-s390@vger.kernel.org
+W: http://www.ibm.com/developerworks/linux/linux390/
+S: Supported
+F: drivers/s390/block/dasd*
+F: block/partitions/ibm.c
+
S390 NETWORK DRIVERS
M: Ursula Braun <ursula.braun@de.ibm.com>
M: Frank Blaschka <blaschka@linux.vnet.ibm.com>
@@ -7418,6 +7434,15 @@
S: Supported
F: drivers/s390/net/
+S390 PCI SUBSYSTEM
+M: Sebastian Ott <sebott@linux.vnet.ibm.com>
+M: Gerald Schaefer <gerald.schaefer@de.ibm.com>
+L: linux-s390@vger.kernel.org
+W: http://www.ibm.com/developerworks/linux/linux390/
+S: Supported
+F: arch/s390/pci/
+F: drivers/pci/hotplug/s390_pci_hpc.c
+
S390 ZCRYPT DRIVER
M: Ingo Tuchscherer <ingo.tuchscherer@de.ibm.com>
M: linux390@de.ibm.com
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index bb74b21..953f17c8 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -141,6 +141,7 @@
select OLD_SIGACTION
select OLD_SIGSUSPEND3
select SYSCTL_EXCEPTION_TRACE
+ select TTY
select VIRT_CPU_ACCOUNTING
select VIRT_TO_BUS
@@ -416,6 +417,10 @@
config ARCH_ENABLE_MEMORY_HOTREMOVE
def_bool y
+config ARCH_ENABLE_SPLIT_PMD_PTLOCK
+ def_bool y
+ depends on 64BIT
+
config FORCE_MAX_ZONEORDER
int
default "9"
diff --git a/arch/s390/appldata/appldata_os.c b/arch/s390/appldata/appldata_os.c
index de8e2b3..69b23b2 100644
--- a/arch/s390/appldata/appldata_os.c
+++ b/arch/s390/appldata/appldata_os.c
@@ -171,7 +171,7 @@
int rc, max_size;
max_size = sizeof(struct appldata_os_data) +
- (NR_CPUS * sizeof(struct appldata_os_per_cpu));
+ (num_possible_cpus() * sizeof(struct appldata_os_per_cpu));
if (max_size > APPLDATA_MAX_REC_SIZE) {
pr_err("Maximum OS record size %i exceeds the maximum "
"record size %i\n", max_size, APPLDATA_MAX_REC_SIZE);
diff --git a/arch/s390/configs/default_defconfig b/arch/s390/configs/default_defconfig
index e0af2ee..ddaae2f 100644
--- a/arch/s390/configs/default_defconfig
+++ b/arch/s390/configs/default_defconfig
@@ -46,6 +46,7 @@
CONFIG_CFQ_GROUP_IOSCHED=y
CONFIG_DEFAULT_DEADLINE=y
CONFIG_MARCH_Z9_109=y
+CONFIG_NR_CPUS=256
CONFIG_PREEMPT=y
CONFIG_HZ_100=y
CONFIG_MEMORY_HOTPLUG=y
@@ -58,7 +59,6 @@
CONFIG_HOTPLUG_PCI_S390=y
CONFIG_CHSC_SCH=y
CONFIG_CRASH_DUMP=y
-CONFIG_ZFCPDUMP=y
# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
CONFIG_BINFMT_MISC=m
CONFIG_HIBERNATION=y
@@ -101,7 +101,6 @@
CONFIG_TCP_CONG_YEAH=m
CONFIG_TCP_CONG_ILLINOIS=m
CONFIG_IPV6=y
-CONFIG_IPV6_PRIVACY=y
CONFIG_IPV6_ROUTER_PREF=y
CONFIG_INET6_AH=m
CONFIG_INET6_ESP=m
@@ -111,6 +110,7 @@
CONFIG_INET6_XFRM_MODE_TUNNEL=m
CONFIG_INET6_XFRM_MODE_BEET=m
CONFIG_INET6_XFRM_MODE_ROUTEOPTIMIZATION=m
+CONFIG_IPV6_VTI=m
CONFIG_IPV6_SIT=m
CONFIG_IPV6_GRE=m
CONFIG_IPV6_MULTIPLE_TABLES=y
@@ -135,7 +135,17 @@
CONFIG_NF_CONNTRACK_TFTP=m
CONFIG_NF_CT_NETLINK=m
CONFIG_NF_CT_NETLINK_TIMEOUT=m
-CONFIG_NETFILTER_TPROXY=m
+CONFIG_NF_TABLES=m
+CONFIG_NFT_EXTHDR=m
+CONFIG_NFT_META=m
+CONFIG_NFT_CT=m
+CONFIG_NFT_RBTREE=m
+CONFIG_NFT_HASH=m
+CONFIG_NFT_COUNTER=m
+CONFIG_NFT_LOG=m
+CONFIG_NFT_LIMIT=m
+CONFIG_NFT_NAT=m
+CONFIG_NFT_COMPAT=m
CONFIG_NETFILTER_XT_SET=m
CONFIG_NETFILTER_XT_TARGET_AUDIT=m
CONFIG_NETFILTER_XT_TARGET_CHECKSUM=m
@@ -204,7 +214,9 @@
CONFIG_IP_SET_HASH_IPPORT=m
CONFIG_IP_SET_HASH_IPPORTIP=m
CONFIG_IP_SET_HASH_IPPORTNET=m
+CONFIG_IP_SET_HASH_NETPORTNET=m
CONFIG_IP_SET_HASH_NET=m
+CONFIG_IP_SET_HASH_NETNET=m
CONFIG_IP_SET_HASH_NETPORT=m
CONFIG_IP_SET_HASH_NETIFACE=m
CONFIG_IP_SET_LIST_SET=m
@@ -227,6 +239,11 @@
CONFIG_IP_VS_PE_SIP=m
CONFIG_NF_CONNTRACK_IPV4=m
# CONFIG_NF_CONNTRACK_PROC_COMPAT is not set
+CONFIG_NF_TABLES_IPV4=m
+CONFIG_NFT_REJECT_IPV4=m
+CONFIG_NFT_CHAIN_ROUTE_IPV4=m
+CONFIG_NFT_CHAIN_NAT_IPV4=m
+CONFIG_NF_TABLES_ARP=m
CONFIG_IP_NF_IPTABLES=m
CONFIG_IP_NF_MATCH_AH=m
CONFIG_IP_NF_MATCH_ECN=m
@@ -249,6 +266,9 @@
CONFIG_IP_NF_ARPFILTER=m
CONFIG_IP_NF_ARP_MANGLE=m
CONFIG_NF_CONNTRACK_IPV6=m
+CONFIG_NF_TABLES_IPV6=m
+CONFIG_NFT_CHAIN_ROUTE_IPV6=m
+CONFIG_NFT_CHAIN_NAT_IPV6=m
CONFIG_IP6_NF_IPTABLES=m
CONFIG_IP6_NF_MATCH_AH=m
CONFIG_IP6_NF_MATCH_EUI64=m
@@ -268,6 +288,7 @@
CONFIG_NF_NAT_IPV6=m
CONFIG_IP6_NF_TARGET_MASQUERADE=m
CONFIG_IP6_NF_TARGET_NPT=m
+CONFIG_NF_TABLES_BRIDGE=m
CONFIG_NET_SCTPPROBE=m
CONFIG_RDS=m
CONFIG_RDS_RDMA=m
@@ -314,6 +335,7 @@
CONFIG_NET_CLS_RSVP6=m
CONFIG_NET_CLS_FLOW=m
CONFIG_NET_CLS_CGROUP=y
+CONFIG_NET_CLS_BPF=m
CONFIG_NET_CLS_ACT=y
CONFIG_NET_ACT_POLICE=m
CONFIG_NET_ACT_GACT=m
@@ -381,8 +403,8 @@
CONFIG_DM_CRYPT=m
CONFIG_DM_SNAPSHOT=m
CONFIG_DM_MIRROR=m
-CONFIG_DM_RAID=m
CONFIG_DM_LOG_USERSPACE=m
+CONFIG_DM_RAID=m
CONFIG_DM_ZERO=m
CONFIG_DM_MULTIPATH=m
CONFIG_DM_MULTIPATH_QL=m
@@ -434,7 +456,6 @@
CONFIG_WATCHDOG=y
CONFIG_WATCHDOG_NOWAYOUT=y
CONFIG_SOFT_WATCHDOG=m
-CONFIG_ZVM_WATCHDOG=m
# CONFIG_HID is not set
# CONFIG_USB_SUPPORT is not set
CONFIG_INFINIBAND=m
@@ -534,13 +555,23 @@
CONFIG_MAGIC_SYSRQ=y
CONFIG_DEBUG_KERNEL=y
CONFIG_DEBUG_PAGEALLOC=y
+CONFIG_DEBUG_OBJECTS=y
+CONFIG_DEBUG_OBJECTS_SELFTEST=y
+CONFIG_DEBUG_OBJECTS_FREE=y
+CONFIG_DEBUG_OBJECTS_TIMERS=y
+CONFIG_DEBUG_OBJECTS_WORK=y
+CONFIG_DEBUG_OBJECTS_RCU_HEAD=y
+CONFIG_DEBUG_OBJECTS_PERCPU_COUNTER=y
CONFIG_SLUB_DEBUG_ON=y
CONFIG_SLUB_STATS=y
+CONFIG_DEBUG_KMEMLEAK=y
CONFIG_DEBUG_STACK_USAGE=y
CONFIG_DEBUG_VM=y
CONFIG_DEBUG_VM_RB=y
CONFIG_MEMORY_NOTIFIER_ERROR_INJECT=m
CONFIG_DEBUG_PER_CPU_MAPS=y
+CONFIG_DEBUG_SHIRQ=y
+CONFIG_DETECT_HUNG_TASK=y
CONFIG_TIMER_STATS=y
CONFIG_DEBUG_RT_MUTEXES=y
CONFIG_RT_MUTEX_TESTER=y
@@ -573,9 +604,11 @@
CONFIG_BLK_DEV_IO_TRACE=y
# CONFIG_KPROBE_EVENT is not set
CONFIG_LKDTM=m
+CONFIG_TEST_LIST_SORT=y
CONFIG_KPROBES_SANITY_TEST=y
-CONFIG_RBTREE_TEST=m
+CONFIG_RBTREE_TEST=y
CONFIG_INTERVAL_TREE_TEST=m
+CONFIG_PERCPU_TEST=m
CONFIG_ATOMIC64_SELFTEST=y
CONFIG_DMA_API_DEBUG=y
# CONFIG_STRICT_DEVMEM is not set
@@ -638,7 +671,6 @@
CONFIG_CRYPTO_GHASH_S390=m
CONFIG_ASYMMETRIC_KEY_TYPE=m
CONFIG_ASYMMETRIC_PUBLIC_KEY_SUBTYPE=m
-CONFIG_PUBLIC_KEY_ALGO_RSA=m
CONFIG_X509_CERTIFICATE_PARSER=m
CONFIG_CRC7=m
CONFIG_CRC8=m
diff --git a/arch/s390/configs/gcov_defconfig b/arch/s390/configs/gcov_defconfig
index b9f6b4c..c81a74e 100644
--- a/arch/s390/configs/gcov_defconfig
+++ b/arch/s390/configs/gcov_defconfig
@@ -46,6 +46,7 @@
CONFIG_CFQ_GROUP_IOSCHED=y
CONFIG_DEFAULT_DEADLINE=y
CONFIG_MARCH_Z9_109=y
+CONFIG_NR_CPUS=256
CONFIG_HZ_100=y
CONFIG_MEMORY_HOTPLUG=y
CONFIG_MEMORY_HOTREMOVE=y
@@ -56,7 +57,6 @@
CONFIG_HOTPLUG_PCI_S390=y
CONFIG_CHSC_SCH=y
CONFIG_CRASH_DUMP=y
-CONFIG_ZFCPDUMP=y
# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
CONFIG_BINFMT_MISC=m
CONFIG_HIBERNATION=y
@@ -99,7 +99,6 @@
CONFIG_TCP_CONG_YEAH=m
CONFIG_TCP_CONG_ILLINOIS=m
CONFIG_IPV6=y
-CONFIG_IPV6_PRIVACY=y
CONFIG_IPV6_ROUTER_PREF=y
CONFIG_INET6_AH=m
CONFIG_INET6_ESP=m
@@ -109,6 +108,7 @@
CONFIG_INET6_XFRM_MODE_TUNNEL=m
CONFIG_INET6_XFRM_MODE_BEET=m
CONFIG_INET6_XFRM_MODE_ROUTEOPTIMIZATION=m
+CONFIG_IPV6_VTI=m
CONFIG_IPV6_SIT=m
CONFIG_IPV6_GRE=m
CONFIG_IPV6_MULTIPLE_TABLES=y
@@ -133,7 +133,17 @@
CONFIG_NF_CONNTRACK_TFTP=m
CONFIG_NF_CT_NETLINK=m
CONFIG_NF_CT_NETLINK_TIMEOUT=m
-CONFIG_NETFILTER_TPROXY=m
+CONFIG_NF_TABLES=m
+CONFIG_NFT_EXTHDR=m
+CONFIG_NFT_META=m
+CONFIG_NFT_CT=m
+CONFIG_NFT_RBTREE=m
+CONFIG_NFT_HASH=m
+CONFIG_NFT_COUNTER=m
+CONFIG_NFT_LOG=m
+CONFIG_NFT_LIMIT=m
+CONFIG_NFT_NAT=m
+CONFIG_NFT_COMPAT=m
CONFIG_NETFILTER_XT_SET=m
CONFIG_NETFILTER_XT_TARGET_AUDIT=m
CONFIG_NETFILTER_XT_TARGET_CHECKSUM=m
@@ -202,7 +212,9 @@
CONFIG_IP_SET_HASH_IPPORT=m
CONFIG_IP_SET_HASH_IPPORTIP=m
CONFIG_IP_SET_HASH_IPPORTNET=m
+CONFIG_IP_SET_HASH_NETPORTNET=m
CONFIG_IP_SET_HASH_NET=m
+CONFIG_IP_SET_HASH_NETNET=m
CONFIG_IP_SET_HASH_NETPORT=m
CONFIG_IP_SET_HASH_NETIFACE=m
CONFIG_IP_SET_LIST_SET=m
@@ -225,6 +237,11 @@
CONFIG_IP_VS_PE_SIP=m
CONFIG_NF_CONNTRACK_IPV4=m
# CONFIG_NF_CONNTRACK_PROC_COMPAT is not set
+CONFIG_NF_TABLES_IPV4=m
+CONFIG_NFT_REJECT_IPV4=m
+CONFIG_NFT_CHAIN_ROUTE_IPV4=m
+CONFIG_NFT_CHAIN_NAT_IPV4=m
+CONFIG_NF_TABLES_ARP=m
CONFIG_IP_NF_IPTABLES=m
CONFIG_IP_NF_MATCH_AH=m
CONFIG_IP_NF_MATCH_ECN=m
@@ -247,6 +264,9 @@
CONFIG_IP_NF_ARPFILTER=m
CONFIG_IP_NF_ARP_MANGLE=m
CONFIG_NF_CONNTRACK_IPV6=m
+CONFIG_NF_TABLES_IPV6=m
+CONFIG_NFT_CHAIN_ROUTE_IPV6=m
+CONFIG_NFT_CHAIN_NAT_IPV6=m
CONFIG_IP6_NF_IPTABLES=m
CONFIG_IP6_NF_MATCH_AH=m
CONFIG_IP6_NF_MATCH_EUI64=m
@@ -266,6 +286,7 @@
CONFIG_NF_NAT_IPV6=m
CONFIG_IP6_NF_TARGET_MASQUERADE=m
CONFIG_IP6_NF_TARGET_NPT=m
+CONFIG_NF_TABLES_BRIDGE=m
CONFIG_NET_SCTPPROBE=m
CONFIG_RDS=m
CONFIG_RDS_RDMA=m
@@ -311,6 +332,7 @@
CONFIG_NET_CLS_RSVP6=m
CONFIG_NET_CLS_FLOW=m
CONFIG_NET_CLS_CGROUP=y
+CONFIG_NET_CLS_BPF=m
CONFIG_NET_CLS_ACT=y
CONFIG_NET_ACT_POLICE=m
CONFIG_NET_ACT_GACT=m
@@ -378,8 +400,8 @@
CONFIG_DM_CRYPT=m
CONFIG_DM_SNAPSHOT=m
CONFIG_DM_MIRROR=m
-CONFIG_DM_RAID=m
CONFIG_DM_LOG_USERSPACE=m
+CONFIG_DM_RAID=m
CONFIG_DM_ZERO=m
CONFIG_DM_MULTIPATH=m
CONFIG_DM_MULTIPATH_QL=m
@@ -431,7 +453,6 @@
CONFIG_WATCHDOG=y
CONFIG_WATCHDOG_NOWAYOUT=y
CONFIG_SOFT_WATCHDOG=m
-CONFIG_ZVM_WATCHDOG=m
# CONFIG_HID is not set
# CONFIG_USB_SUPPORT is not set
CONFIG_INFINIBAND=m
@@ -540,6 +561,7 @@
CONFIG_LKDTM=m
CONFIG_RBTREE_TEST=m
CONFIG_INTERVAL_TREE_TEST=m
+CONFIG_PERCPU_TEST=m
CONFIG_ATOMIC64_SELFTEST=y
# CONFIG_STRICT_DEVMEM is not set
CONFIG_S390_PTDUMP=y
@@ -601,7 +623,6 @@
CONFIG_CRYPTO_GHASH_S390=m
CONFIG_ASYMMETRIC_KEY_TYPE=m
CONFIG_ASYMMETRIC_PUBLIC_KEY_SUBTYPE=m
-CONFIG_PUBLIC_KEY_ALGO_RSA=m
CONFIG_X509_CERTIFICATE_PARSER=m
CONFIG_CRC7=m
CONFIG_CRC8=m
diff --git a/arch/s390/configs/performance_defconfig b/arch/s390/configs/performance_defconfig
index 91087b4..b5ba8fe 100644
--- a/arch/s390/configs/performance_defconfig
+++ b/arch/s390/configs/performance_defconfig
@@ -44,6 +44,7 @@
CONFIG_CFQ_GROUP_IOSCHED=y
CONFIG_DEFAULT_DEADLINE=y
CONFIG_MARCH_Z9_109=y
+CONFIG_NR_CPUS=256
CONFIG_HZ_100=y
CONFIG_MEMORY_HOTPLUG=y
CONFIG_MEMORY_HOTREMOVE=y
@@ -54,7 +55,6 @@
CONFIG_HOTPLUG_PCI_S390=y
CONFIG_CHSC_SCH=y
CONFIG_CRASH_DUMP=y
-CONFIG_ZFCPDUMP=y
# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
CONFIG_BINFMT_MISC=m
CONFIG_HIBERNATION=y
@@ -97,7 +97,6 @@
CONFIG_TCP_CONG_YEAH=m
CONFIG_TCP_CONG_ILLINOIS=m
CONFIG_IPV6=y
-CONFIG_IPV6_PRIVACY=y
CONFIG_IPV6_ROUTER_PREF=y
CONFIG_INET6_AH=m
CONFIG_INET6_ESP=m
@@ -107,6 +106,7 @@
CONFIG_INET6_XFRM_MODE_TUNNEL=m
CONFIG_INET6_XFRM_MODE_BEET=m
CONFIG_INET6_XFRM_MODE_ROUTEOPTIMIZATION=m
+CONFIG_IPV6_VTI=m
CONFIG_IPV6_SIT=m
CONFIG_IPV6_GRE=m
CONFIG_IPV6_MULTIPLE_TABLES=y
@@ -131,7 +131,17 @@
CONFIG_NF_CONNTRACK_TFTP=m
CONFIG_NF_CT_NETLINK=m
CONFIG_NF_CT_NETLINK_TIMEOUT=m
-CONFIG_NETFILTER_TPROXY=m
+CONFIG_NF_TABLES=m
+CONFIG_NFT_EXTHDR=m
+CONFIG_NFT_META=m
+CONFIG_NFT_CT=m
+CONFIG_NFT_RBTREE=m
+CONFIG_NFT_HASH=m
+CONFIG_NFT_COUNTER=m
+CONFIG_NFT_LOG=m
+CONFIG_NFT_LIMIT=m
+CONFIG_NFT_NAT=m
+CONFIG_NFT_COMPAT=m
CONFIG_NETFILTER_XT_SET=m
CONFIG_NETFILTER_XT_TARGET_AUDIT=m
CONFIG_NETFILTER_XT_TARGET_CHECKSUM=m
@@ -200,7 +210,9 @@
CONFIG_IP_SET_HASH_IPPORT=m
CONFIG_IP_SET_HASH_IPPORTIP=m
CONFIG_IP_SET_HASH_IPPORTNET=m
+CONFIG_IP_SET_HASH_NETPORTNET=m
CONFIG_IP_SET_HASH_NET=m
+CONFIG_IP_SET_HASH_NETNET=m
CONFIG_IP_SET_HASH_NETPORT=m
CONFIG_IP_SET_HASH_NETIFACE=m
CONFIG_IP_SET_LIST_SET=m
@@ -223,6 +235,11 @@
CONFIG_IP_VS_PE_SIP=m
CONFIG_NF_CONNTRACK_IPV4=m
# CONFIG_NF_CONNTRACK_PROC_COMPAT is not set
+CONFIG_NF_TABLES_IPV4=m
+CONFIG_NFT_REJECT_IPV4=m
+CONFIG_NFT_CHAIN_ROUTE_IPV4=m
+CONFIG_NFT_CHAIN_NAT_IPV4=m
+CONFIG_NF_TABLES_ARP=m
CONFIG_IP_NF_IPTABLES=m
CONFIG_IP_NF_MATCH_AH=m
CONFIG_IP_NF_MATCH_ECN=m
@@ -245,6 +262,9 @@
CONFIG_IP_NF_ARPFILTER=m
CONFIG_IP_NF_ARP_MANGLE=m
CONFIG_NF_CONNTRACK_IPV6=m
+CONFIG_NF_TABLES_IPV6=m
+CONFIG_NFT_CHAIN_ROUTE_IPV6=m
+CONFIG_NFT_CHAIN_NAT_IPV6=m
CONFIG_IP6_NF_IPTABLES=m
CONFIG_IP6_NF_MATCH_AH=m
CONFIG_IP6_NF_MATCH_EUI64=m
@@ -264,6 +284,7 @@
CONFIG_NF_NAT_IPV6=m
CONFIG_IP6_NF_TARGET_MASQUERADE=m
CONFIG_IP6_NF_TARGET_NPT=m
+CONFIG_NF_TABLES_BRIDGE=m
CONFIG_NET_SCTPPROBE=m
CONFIG_RDS=m
CONFIG_RDS_RDMA=m
@@ -309,6 +330,7 @@
CONFIG_NET_CLS_RSVP6=m
CONFIG_NET_CLS_FLOW=m
CONFIG_NET_CLS_CGROUP=y
+CONFIG_NET_CLS_BPF=m
CONFIG_NET_CLS_ACT=y
CONFIG_NET_ACT_POLICE=m
CONFIG_NET_ACT_GACT=m
@@ -376,8 +398,8 @@
CONFIG_DM_CRYPT=m
CONFIG_DM_SNAPSHOT=m
CONFIG_DM_MIRROR=m
-CONFIG_DM_RAID=m
CONFIG_DM_LOG_USERSPACE=m
+CONFIG_DM_RAID=m
CONFIG_DM_ZERO=m
CONFIG_DM_MULTIPATH=m
CONFIG_DM_MULTIPATH_QL=m
@@ -429,7 +451,6 @@
CONFIG_WATCHDOG=y
CONFIG_WATCHDOG_NOWAYOUT=y
CONFIG_SOFT_WATCHDOG=m
-CONFIG_ZVM_WATCHDOG=m
# CONFIG_HID is not set
# CONFIG_USB_SUPPORT is not set
CONFIG_INFINIBAND=m
@@ -532,6 +553,7 @@
CONFIG_BLK_DEV_IO_TRACE=y
# CONFIG_KPROBE_EVENT is not set
CONFIG_LKDTM=m
+CONFIG_PERCPU_TEST=m
CONFIG_ATOMIC64_SELFTEST=y
# CONFIG_STRICT_DEVMEM is not set
CONFIG_S390_PTDUMP=y
@@ -593,7 +615,6 @@
CONFIG_CRYPTO_GHASH_S390=m
CONFIG_ASYMMETRIC_KEY_TYPE=m
CONFIG_ASYMMETRIC_PUBLIC_KEY_SUBTYPE=m
-CONFIG_PUBLIC_KEY_ALGO_RSA=m
CONFIG_X509_CERTIFICATE_PARSER=m
CONFIG_CRC7=m
CONFIG_CRC8=m
diff --git a/arch/s390/configs/zfcpdump_defconfig b/arch/s390/configs/zfcpdump_defconfig
index d725c4d..cef073c 100644
--- a/arch/s390/configs/zfcpdump_defconfig
+++ b/arch/s390/configs/zfcpdump_defconfig
@@ -19,7 +19,6 @@
# CONFIG_CHSC_SCH is not set
# CONFIG_SCM_BUS is not set
CONFIG_CRASH_DUMP=y
-CONFIG_ZFCPDUMP=y
# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
# CONFIG_SECCOMP is not set
# CONFIG_IUCV is not set
diff --git a/arch/s390/defconfig b/arch/s390/defconfig
index 33f5751..4557cb7 100644
--- a/arch/s390/defconfig
+++ b/arch/s390/defconfig
@@ -40,6 +40,7 @@
CONFIG_IBM_PARTITION=y
CONFIG_DEFAULT_DEADLINE=y
CONFIG_MARCH_Z196=y
+CONFIG_NR_CPUS=256
CONFIG_HZ_100=y
CONFIG_MEMORY_HOTPLUG=y
CONFIG_MEMORY_HOTREMOVE=y
@@ -122,22 +123,31 @@
CONFIG_TMPFS_POSIX_ACL=y
CONFIG_HUGETLBFS=y
# CONFIG_NETWORK_FILESYSTEMS is not set
+CONFIG_UNUSED_SYMBOLS=y
+CONFIG_DEBUG_SECTION_MISMATCH=y
CONFIG_DEBUG_FORCE_WEAK_PER_CPU=y
CONFIG_MAGIC_SYSRQ=y
CONFIG_DEBUG_PAGEALLOC=y
+CONFIG_DETECT_HUNG_TASK=y
CONFIG_TIMER_STATS=y
+CONFIG_DEBUG_RT_MUTEXES=y
CONFIG_PROVE_LOCKING=y
CONFIG_LOCK_STAT=y
CONFIG_DEBUG_LOCKDEP=y
+CONFIG_DEBUG_ATOMIC_SLEEP=y
+CONFIG_DEBUG_WRITECOUNT=y
CONFIG_DEBUG_LIST=y
+CONFIG_DEBUG_SG=y
CONFIG_DEBUG_NOTIFIERS=y
CONFIG_PROVE_RCU=y
CONFIG_RCU_CPU_STALL_TIMEOUT=60
CONFIG_RCU_TRACE=y
CONFIG_LATENCYTOP=y
+CONFIG_DEBUG_STRICT_USER_COPY_CHECKS=y
CONFIG_BLK_DEV_IO_TRACE=y
CONFIG_KPROBES_SANITY_TEST=y
# CONFIG_STRICT_DEVMEM is not set
+CONFIG_S390_PTDUMP=y
CONFIG_CRYPTO_CRYPTD=m
CONFIG_CRYPTO_AUTHENC=m
CONFIG_CRYPTO_TEST=m
diff --git a/arch/s390/hypfs/hypfs_vm.c b/arch/s390/hypfs/hypfs_vm.c
index 24908ce..32040ac 100644
--- a/arch/s390/hypfs/hypfs_vm.c
+++ b/arch/s390/hypfs/hypfs_vm.c
@@ -32,7 +32,7 @@
__u32 pcpus;
__u32 lcpus;
__u32 vcpus;
- __u32 cpu_min;
+ __u32 ocpus;
__u32 cpu_max;
__u32 cpu_shares;
__u32 cpu_use_samp;
@@ -142,7 +142,12 @@
ATTRIBUTE(cpus_dir, "capped", capped_value);
ATTRIBUTE(cpus_dir, "dedicated", dedicated_flag);
ATTRIBUTE(cpus_dir, "count", data->vcpus);
- ATTRIBUTE(cpus_dir, "weight_min", data->cpu_min);
+ /*
+ * Note: The "weight_min" attribute got the wrong name.
+ * The value represents the number of non-stopped (operating)
+ * CPUS.
+ */
+ ATTRIBUTE(cpus_dir, "weight_min", data->ocpus);
ATTRIBUTE(cpus_dir, "weight_max", data->cpu_max);
ATTRIBUTE(cpus_dir, "weight_cur", data->cpu_shares);
diff --git a/arch/s390/include/asm/airq.h b/arch/s390/include/asm/airq.h
index 4bbb595..bd93ff6 100644
--- a/arch/s390/include/asm/airq.h
+++ b/arch/s390/include/asm/airq.h
@@ -44,11 +44,21 @@
struct airq_iv *airq_iv_create(unsigned long bits, unsigned long flags);
void airq_iv_release(struct airq_iv *iv);
-unsigned long airq_iv_alloc_bit(struct airq_iv *iv);
-void airq_iv_free_bit(struct airq_iv *iv, unsigned long bit);
+unsigned long airq_iv_alloc(struct airq_iv *iv, unsigned long num);
+void airq_iv_free(struct airq_iv *iv, unsigned long bit, unsigned long num);
unsigned long airq_iv_scan(struct airq_iv *iv, unsigned long start,
unsigned long end);
+static inline unsigned long airq_iv_alloc_bit(struct airq_iv *iv)
+{
+ return airq_iv_alloc(iv, 1);
+}
+
+static inline void airq_iv_free_bit(struct airq_iv *iv, unsigned long bit)
+{
+ airq_iv_free(iv, bit, 1);
+}
+
static inline unsigned long airq_iv_end(struct airq_iv *iv)
{
return iv->end;
diff --git a/arch/s390/include/asm/bitops.h b/arch/s390/include/asm/bitops.h
index 6e6ad06..ec5ef89 100644
--- a/arch/s390/include/asm/bitops.h
+++ b/arch/s390/include/asm/bitops.h
@@ -13,9 +13,9 @@
*
* The bitop functions are defined to work on unsigned longs, so for an
* s390x system the bits end up numbered:
- * |63..............0|127............64|191...........128|255...........196|
+ * |63..............0|127............64|191...........128|255...........192|
* and on s390:
- * |31.....0|63....31|95....64|127...96|159..128|191..160|223..192|255..224|
+ * |31.....0|63....32|95....64|127...96|159..128|191..160|223..192|255..224|
*
* There are a few little-endian macros used mostly for filesystem
* bitmaps, these work on similar bit arrays layouts, but
@@ -30,7 +30,7 @@
* on an s390x system the bits are numbered:
* |0..............63|64............127|128...........191|192...........255|
* and on s390:
- * |0.....31|31....63|64....95|96...127|128..159|160..191|192..223|224..255|
+ * |0.....31|32....63|64....95|96...127|128..159|160..191|192..223|224..255|
*
* The main difference is that bit 0-63 (64b) or 0-31 (32b) in the bit
* number field needs to be reversed compared to the LSB0 encoded bit
@@ -304,7 +304,7 @@
* On an s390x system the bits are numbered:
* |0..............63|64............127|128...........191|192...........255|
* and on s390:
- * |0.....31|31....63|64....95|96...127|128..159|160..191|192..223|224..255|
+ * |0.....31|32....63|64....95|96...127|128..159|160..191|192..223|224..255|
*/
unsigned long find_first_bit_inv(const unsigned long *addr, unsigned long size);
unsigned long find_next_bit_inv(const unsigned long *addr, unsigned long size,
diff --git a/arch/s390/include/asm/ccwdev.h b/arch/s390/include/asm/ccwdev.h
index f201af8..a9c2c06 100644
--- a/arch/s390/include/asm/ccwdev.h
+++ b/arch/s390/include/asm/ccwdev.h
@@ -219,7 +219,9 @@
#define to_ccwdev(n) container_of(n, struct ccw_device, dev)
#define to_ccwdrv(n) container_of(n, struct ccw_driver, driver)
-extern struct ccw_device *ccw_device_probe_console(void);
+extern struct ccw_device *ccw_device_create_console(struct ccw_driver *);
+extern void ccw_device_destroy_console(struct ccw_device *);
+extern int ccw_device_enable_console(struct ccw_device *);
extern void ccw_device_wait_idle(struct ccw_device *);
extern int ccw_device_force_console(struct ccw_device *);
diff --git a/arch/s390/include/asm/checksum.h b/arch/s390/include/asm/checksum.h
index 4f57a4f..7403648 100644
--- a/arch/s390/include/asm/checksum.h
+++ b/arch/s390/include/asm/checksum.h
@@ -44,22 +44,15 @@
* here even more important to align src and dst on a 32-bit (or even
* better 64-bit) boundary
*
- * Copy from userspace and compute checksum. If we catch an exception
- * then zero the rest of the buffer.
+ * Copy from userspace and compute checksum.
*/
static inline __wsum
csum_partial_copy_from_user(const void __user *src, void *dst,
int len, __wsum sum,
int *err_ptr)
{
- int missing;
-
- missing = copy_from_user(dst, src, len);
- if (missing) {
- memset(dst + len - missing, 0, missing);
+ if (unlikely(copy_from_user(dst, src, len)))
*err_ptr = -EFAULT;
- }
-
return csum_partial(dst, len, sum);
}
diff --git a/arch/s390/include/asm/futex.h b/arch/s390/include/asm/futex.h
index 51bcaa0..fda46bd 100644
--- a/arch/s390/include/asm/futex.h
+++ b/arch/s390/include/asm/futex.h
@@ -5,7 +5,10 @@
#include <linux/uaccess.h>
#include <asm/errno.h>
-static inline int futex_atomic_op_inuser (int encoded_op, u32 __user *uaddr)
+int futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr, u32 oldval, u32 newval);
+int __futex_atomic_op_inuser(int op, u32 __user *uaddr, int oparg, int *old);
+
+static inline int futex_atomic_op_inuser(int encoded_op, u32 __user *uaddr)
{
int op = (encoded_op >> 28) & 7;
int cmp = (encoded_op >> 24) & 15;
@@ -17,7 +20,7 @@
oparg = 1 << oparg;
pagefault_disable();
- ret = uaccess.futex_atomic_op(op, uaddr, oparg, &oldval);
+ ret = __futex_atomic_op_inuser(op, uaddr, oparg, &oldval);
pagefault_enable();
if (!ret) {
@@ -34,10 +37,4 @@
return ret;
}
-static inline int futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
- u32 oldval, u32 newval)
-{
- return uaccess.futex_atomic_cmpxchg(uval, uaddr, oldval, newval);
-}
-
#endif /* _ASM_S390_FUTEX_H */
diff --git a/arch/s390/include/asm/kvm_host.h b/arch/s390/include/asm/kvm_host.h
index eef3dd3..9bf95bb 100644
--- a/arch/s390/include/asm/kvm_host.h
+++ b/arch/s390/include/asm/kvm_host.h
@@ -106,7 +106,9 @@
__u64 gbea; /* 0x0180 */
__u8 reserved188[24]; /* 0x0188 */
__u32 fac; /* 0x01a0 */
- __u8 reserved1a4[68]; /* 0x01a4 */
+ __u8 reserved1a4[20]; /* 0x01a4 */
+ __u64 cbrlo; /* 0x01b8 */
+ __u8 reserved1c0[40]; /* 0x01c0 */
__u64 itdba; /* 0x01e8 */
__u8 reserved1f0[16]; /* 0x01f0 */
} __attribute__((packed));
@@ -155,6 +157,7 @@
u32 instruction_stsi;
u32 instruction_stfl;
u32 instruction_tprot;
+ u32 instruction_essa;
u32 instruction_sigp_sense;
u32 instruction_sigp_sense_running;
u32 instruction_sigp_external_call;
diff --git a/arch/s390/include/asm/mmu_context.h b/arch/s390/include/asm/mmu_context.h
index 5d1f950..38149b6 100644
--- a/arch/s390/include/asm/mmu_context.h
+++ b/arch/s390/include/asm/mmu_context.h
@@ -48,13 +48,42 @@
static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
struct task_struct *tsk)
{
- cpumask_set_cpu(smp_processor_id(), mm_cpumask(next));
- update_mm(next, tsk);
+ int cpu = smp_processor_id();
+
+ if (prev == next)
+ return;
+ if (atomic_inc_return(&next->context.attach_count) >> 16) {
+ /* Delay update_mm until all TLB flushes are done. */
+ set_tsk_thread_flag(tsk, TIF_TLB_WAIT);
+ } else {
+ cpumask_set_cpu(cpu, mm_cpumask(next));
+ update_mm(next, tsk);
+ if (next->context.flush_mm)
+ /* Flush pending TLBs */
+ __tlb_flush_mm(next);
+ }
atomic_dec(&prev->context.attach_count);
WARN_ON(atomic_read(&prev->context.attach_count) < 0);
- atomic_inc(&next->context.attach_count);
- /* Check for TLBs not flushed yet */
- __tlb_flush_mm_lazy(next);
+}
+
+#define finish_arch_post_lock_switch finish_arch_post_lock_switch
+static inline void finish_arch_post_lock_switch(void)
+{
+ struct task_struct *tsk = current;
+ struct mm_struct *mm = tsk->mm;
+
+ if (!test_tsk_thread_flag(tsk, TIF_TLB_WAIT))
+ return;
+ preempt_disable();
+ clear_tsk_thread_flag(tsk, TIF_TLB_WAIT);
+ while (atomic_read(&mm->context.attach_count) >> 16)
+ cpu_relax();
+
+ cpumask_set_cpu(smp_processor_id(), mm_cpumask(mm));
+ update_mm(mm, tsk);
+ if (mm->context.flush_mm)
+ __tlb_flush_mm(mm);
+ preempt_enable();
}
#define enter_lazy_tlb(mm,tsk) do { } while (0)
diff --git a/arch/s390/include/asm/pgalloc.h b/arch/s390/include/asm/pgalloc.h
index e1408dd..884017c 100644
--- a/arch/s390/include/asm/pgalloc.h
+++ b/arch/s390/include/asm/pgalloc.h
@@ -22,6 +22,7 @@
void page_table_free(struct mm_struct *, unsigned long *);
void page_table_free_rcu(struct mmu_gather *, unsigned long *);
+void page_table_reset_pgste(struct mm_struct *, unsigned long, unsigned long);
int set_guest_storage_key(struct mm_struct *mm, unsigned long addr,
unsigned long key, bool nq);
@@ -91,11 +92,22 @@
static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long vmaddr)
{
unsigned long *table = crst_table_alloc(mm);
- if (table)
- crst_table_init(table, _SEGMENT_ENTRY_EMPTY);
+
+ if (!table)
+ return NULL;
+ crst_table_init(table, _SEGMENT_ENTRY_EMPTY);
+ if (!pgtable_pmd_page_ctor(virt_to_page(table))) {
+ crst_table_free(mm, table);
+ return NULL;
+ }
return (pmd_t *) table;
}
-#define pmd_free(mm, pmd) crst_table_free(mm, (unsigned long *) pmd)
+
+static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
+{
+ pgtable_pmd_page_dtor(virt_to_page(pmd));
+ crst_table_free(mm, (unsigned long *) pmd);
+}
static inline void pgd_populate(struct mm_struct *mm, pgd_t *pgd, pud_t *pud)
{
diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h
index 2204400..1ab75ea 100644
--- a/arch/s390/include/asm/pgtable.h
+++ b/arch/s390/include/asm/pgtable.h
@@ -229,6 +229,7 @@
#define _PAGE_READ 0x010 /* SW pte read bit */
#define _PAGE_WRITE 0x020 /* SW pte write bit */
#define _PAGE_SPECIAL 0x040 /* SW associated with special page */
+#define _PAGE_UNUSED 0x080 /* SW bit for pgste usage state */
#define __HAVE_ARCH_PTE_SPECIAL
/* Set of bits not changed in pte_modify */
@@ -394,6 +395,12 @@
#endif /* CONFIG_64BIT */
+/* Guest Page State used for virtualization */
+#define _PGSTE_GPS_ZERO 0x0000000080000000UL
+#define _PGSTE_GPS_USAGE_MASK 0x0000000003000000UL
+#define _PGSTE_GPS_USAGE_STABLE 0x0000000000000000UL
+#define _PGSTE_GPS_USAGE_UNUSED 0x0000000001000000UL
+
/*
* A user page table pointer has the space-switch-event bit, the
* private-space-control bit and the storage-alteration-event-control
@@ -617,6 +624,14 @@
return pte_val(pte) == _PAGE_INVALID;
}
+static inline int pte_swap(pte_t pte)
+{
+ /* Bit pattern: (pte & 0x603) == 0x402 */
+ return (pte_val(pte) & (_PAGE_INVALID | _PAGE_PROTECT |
+ _PAGE_TYPE | _PAGE_PRESENT))
+ == (_PAGE_INVALID | _PAGE_TYPE);
+}
+
static inline int pte_file(pte_t pte)
{
/* Bit pattern: (pte & 0x601) == 0x600 */
@@ -821,20 +836,20 @@
unsigned long __gmap_fault(unsigned long address, struct gmap *);
unsigned long gmap_fault(unsigned long address, struct gmap *);
void gmap_discard(unsigned long from, unsigned long to, struct gmap *);
+void __gmap_zap(unsigned long address, struct gmap *);
void gmap_register_ipte_notifier(struct gmap_notifier *);
void gmap_unregister_ipte_notifier(struct gmap_notifier *);
int gmap_ipte_notify(struct gmap *, unsigned long start, unsigned long len);
-void gmap_do_ipte_notify(struct mm_struct *, unsigned long addr, pte_t *);
+void gmap_do_ipte_notify(struct mm_struct *, pte_t *);
static inline pgste_t pgste_ipte_notify(struct mm_struct *mm,
- unsigned long addr,
pte_t *ptep, pgste_t pgste)
{
#ifdef CONFIG_PGSTE
if (pgste_val(pgste) & PGSTE_IN_BIT) {
pgste_val(pgste) &= ~PGSTE_IN_BIT;
- gmap_do_ipte_notify(mm, addr, ptep);
+ gmap_do_ipte_notify(mm, ptep);
}
#endif
return pgste;
@@ -852,6 +867,7 @@
if (mm_has_pgste(mm)) {
pgste = pgste_get_lock(ptep);
+ pgste_val(pgste) &= ~_PGSTE_GPS_ZERO;
pgste_set_key(ptep, pgste, entry);
pgste_set_pte(ptep, entry);
pgste_set_unlock(ptep, pgste);
@@ -881,6 +897,12 @@
return (pte_val(pte) & _PAGE_YOUNG) != 0;
}
+#define __HAVE_ARCH_PTE_UNUSED
+static inline int pte_unused(pte_t pte)
+{
+ return pte_val(pte) & _PAGE_UNUSED;
+}
+
/*
* pgd/pmd/pte modification functions
*/
@@ -1034,30 +1056,41 @@
static inline void __ptep_ipte(unsigned long address, pte_t *ptep)
{
- if (!(pte_val(*ptep) & _PAGE_INVALID)) {
+ unsigned long pto = (unsigned long) ptep;
+
#ifndef CONFIG_64BIT
- /* pto must point to the start of the segment table */
- pte_t *pto = (pte_t *) (((unsigned long) ptep) & 0x7ffffc00);
-#else
- /* ipte in zarch mode can do the math */
- pte_t *pto = ptep;
+ /* pto in ESA mode must point to the start of the segment table */
+ pto &= 0x7ffffc00;
#endif
- asm volatile(
- " ipte %2,%3"
- : "=m" (*ptep) : "m" (*ptep),
- "a" (pto), "a" (address));
- }
+ /* Invalidation + global TLB flush for the pte */
+ asm volatile(
+ " ipte %2,%3"
+ : "=m" (*ptep) : "m" (*ptep), "a" (pto), "a" (address));
+}
+
+static inline void ptep_flush_direct(struct mm_struct *mm,
+ unsigned long address, pte_t *ptep)
+{
+ if (pte_val(*ptep) & _PAGE_INVALID)
+ return;
+ __ptep_ipte(address, ptep);
}
static inline void ptep_flush_lazy(struct mm_struct *mm,
unsigned long address, pte_t *ptep)
{
- int active = (mm == current->active_mm) ? 1 : 0;
+ int active, count;
- if (atomic_read(&mm->context.attach_count) > active)
- __ptep_ipte(address, ptep);
- else
+ if (pte_val(*ptep) & _PAGE_INVALID)
+ return;
+ active = (mm == current->active_mm) ? 1 : 0;
+ count = atomic_add_return(0x10000, &mm->context.attach_count);
+ if ((count & 0xffff) <= active) {
+ pte_val(*ptep) |= _PAGE_INVALID;
mm->context.flush_mm = 1;
+ } else
+ __ptep_ipte(address, ptep);
+ atomic_sub(0x10000, &mm->context.attach_count);
}
#define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_YOUNG
@@ -1070,11 +1103,11 @@
if (mm_has_pgste(vma->vm_mm)) {
pgste = pgste_get_lock(ptep);
- pgste = pgste_ipte_notify(vma->vm_mm, addr, ptep, pgste);
+ pgste = pgste_ipte_notify(vma->vm_mm, ptep, pgste);
}
pte = *ptep;
- __ptep_ipte(addr, ptep);
+ ptep_flush_direct(vma->vm_mm, addr, ptep);
young = pte_young(pte);
pte = pte_mkold(pte);
@@ -1116,7 +1149,7 @@
if (mm_has_pgste(mm)) {
pgste = pgste_get_lock(ptep);
- pgste = pgste_ipte_notify(mm, address, ptep, pgste);
+ pgste = pgste_ipte_notify(mm, ptep, pgste);
}
pte = *ptep;
@@ -1140,12 +1173,11 @@
if (mm_has_pgste(mm)) {
pgste = pgste_get_lock(ptep);
- pgste_ipte_notify(mm, address, ptep, pgste);
+ pgste_ipte_notify(mm, ptep, pgste);
}
pte = *ptep;
ptep_flush_lazy(mm, address, ptep);
- pte_val(*ptep) |= _PAGE_INVALID;
if (mm_has_pgste(mm)) {
pgste = pgste_update_all(&pte, pgste);
@@ -1178,14 +1210,17 @@
if (mm_has_pgste(vma->vm_mm)) {
pgste = pgste_get_lock(ptep);
- pgste = pgste_ipte_notify(vma->vm_mm, address, ptep, pgste);
+ pgste = pgste_ipte_notify(vma->vm_mm, ptep, pgste);
}
pte = *ptep;
- __ptep_ipte(address, ptep);
+ ptep_flush_direct(vma->vm_mm, address, ptep);
pte_val(*ptep) = _PAGE_INVALID;
if (mm_has_pgste(vma->vm_mm)) {
+ if ((pgste_val(pgste) & _PGSTE_GPS_USAGE_MASK) ==
+ _PGSTE_GPS_USAGE_UNUSED)
+ pte_val(pte) |= _PAGE_UNUSED;
pgste = pgste_update_all(&pte, pgste);
pgste_set_unlock(ptep, pgste);
}
@@ -1209,7 +1244,7 @@
if (!full && mm_has_pgste(mm)) {
pgste = pgste_get_lock(ptep);
- pgste = pgste_ipte_notify(mm, address, ptep, pgste);
+ pgste = pgste_ipte_notify(mm, ptep, pgste);
}
pte = *ptep;
@@ -1234,7 +1269,7 @@
if (pte_write(pte)) {
if (mm_has_pgste(mm)) {
pgste = pgste_get_lock(ptep);
- pgste = pgste_ipte_notify(mm, address, ptep, pgste);
+ pgste = pgste_ipte_notify(mm, ptep, pgste);
}
ptep_flush_lazy(mm, address, ptep);
@@ -1260,10 +1295,10 @@
return 0;
if (mm_has_pgste(vma->vm_mm)) {
pgste = pgste_get_lock(ptep);
- pgste = pgste_ipte_notify(vma->vm_mm, address, ptep, pgste);
+ pgste = pgste_ipte_notify(vma->vm_mm, ptep, pgste);
}
- __ptep_ipte(address, ptep);
+ ptep_flush_direct(vma->vm_mm, address, ptep);
if (mm_has_pgste(vma->vm_mm)) {
pgste_set_pte(ptep, entry);
@@ -1447,12 +1482,16 @@
static inline void pmdp_flush_lazy(struct mm_struct *mm,
unsigned long address, pmd_t *pmdp)
{
- int active = (mm == current->active_mm) ? 1 : 0;
+ int active, count;
- if ((atomic_read(&mm->context.attach_count) & 0xffff) > active)
- __pmd_idte(address, pmdp);
- else
+ active = (mm == current->active_mm) ? 1 : 0;
+ count = atomic_add_return(0x10000, &mm->context.attach_count);
+ if ((count & 0xffff) <= active) {
+ pmd_val(*pmdp) |= _SEGMENT_ENTRY_INVALID;
mm->context.flush_mm = 1;
+ } else
+ __pmd_idte(address, pmdp);
+ atomic_sub(0x10000, &mm->context.attach_count);
}
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
diff --git a/arch/s390/include/asm/ptrace.h b/arch/s390/include/asm/ptrace.h
index 9c82ceb..f4783c0 100644
--- a/arch/s390/include/asm/ptrace.h
+++ b/arch/s390/include/asm/ptrace.h
@@ -83,6 +83,7 @@
* These are defined as per linux/ptrace.h, which see.
*/
#define arch_has_single_step() (1)
+#define arch_has_block_step() (1)
#define user_mode(regs) (((regs)->psw.mask & PSW_MASK_PSTATE) != 0)
#define instruction_pointer(regs) ((regs)->psw.addr & PSW_ADDR_INSN)
diff --git a/arch/s390/include/asm/sclp.h b/arch/s390/include/asm/sclp.h
index abaca22..2f5e993 100644
--- a/arch/s390/include/asm/sclp.h
+++ b/arch/s390/include/asm/sclp.h
@@ -46,6 +46,7 @@
int sclp_cpu_deconfigure(u8 cpu);
unsigned long long sclp_get_rnmax(void);
unsigned long long sclp_get_rzm(void);
+unsigned int sclp_get_max_cpu(void);
int sclp_sdias_blk_count(void);
int sclp_sdias_copy(void *dest, int blk_num, int nr_blks);
int sclp_chp_configure(struct chp_id chpid);
diff --git a/arch/s390/include/asm/setup.h b/arch/s390/include/asm/setup.h
index 94cfbe4..406f3a1 100644
--- a/arch/s390/include/asm/setup.h
+++ b/arch/s390/include/asm/setup.h
@@ -59,7 +59,6 @@
#define MACHINE_FLAG_DIAG44 (1UL << 4)
#define MACHINE_FLAG_IDTE (1UL << 5)
#define MACHINE_FLAG_DIAG9C (1UL << 6)
-#define MACHINE_FLAG_MVCOS (1UL << 7)
#define MACHINE_FLAG_KVM (1UL << 8)
#define MACHINE_FLAG_ESOP (1UL << 9)
#define MACHINE_FLAG_EDAT1 (1UL << 10)
@@ -85,7 +84,6 @@
#define MACHINE_HAS_IDTE (0)
#define MACHINE_HAS_DIAG44 (1)
#define MACHINE_HAS_MVPG (S390_lowcore.machine_flags & MACHINE_FLAG_MVPG)
-#define MACHINE_HAS_MVCOS (0)
#define MACHINE_HAS_EDAT1 (0)
#define MACHINE_HAS_EDAT2 (0)
#define MACHINE_HAS_LPP (0)
@@ -98,7 +96,6 @@
#define MACHINE_HAS_IDTE (S390_lowcore.machine_flags & MACHINE_FLAG_IDTE)
#define MACHINE_HAS_DIAG44 (S390_lowcore.machine_flags & MACHINE_FLAG_DIAG44)
#define MACHINE_HAS_MVPG (1)
-#define MACHINE_HAS_MVCOS (S390_lowcore.machine_flags & MACHINE_FLAG_MVCOS)
#define MACHINE_HAS_EDAT1 (S390_lowcore.machine_flags & MACHINE_FLAG_EDAT1)
#define MACHINE_HAS_EDAT2 (S390_lowcore.machine_flags & MACHINE_FLAG_EDAT2)
#define MACHINE_HAS_LPP (S390_lowcore.machine_flags & MACHINE_FLAG_LPP)
diff --git a/arch/s390/include/asm/thread_info.h b/arch/s390/include/asm/thread_info.h
index 10e0fcd..3ccd71b 100644
--- a/arch/s390/include/asm/thread_info.h
+++ b/arch/s390/include/asm/thread_info.h
@@ -81,6 +81,7 @@
#define TIF_NOTIFY_RESUME 1 /* callback before returning to user */
#define TIF_SIGPENDING 2 /* signal pending */
#define TIF_NEED_RESCHED 3 /* rescheduling necessary */
+#define TIF_TLB_WAIT 4 /* wait for TLB flush completion */
#define TIF_PER_TRAP 6 /* deliver sigtrap on return to user */
#define TIF_MCCK_PENDING 7 /* machine check handling is pending */
#define TIF_SYSCALL_TRACE 8 /* syscall trace active */
@@ -91,11 +92,13 @@
#define TIF_MEMDIE 18 /* is terminating due to OOM killer */
#define TIF_RESTORE_SIGMASK 19 /* restore signal mask in do_signal() */
#define TIF_SINGLE_STEP 20 /* This task is single stepped */
+#define TIF_BLOCK_STEP 21 /* This task is block stepped */
#define _TIF_SYSCALL (1<<TIF_SYSCALL)
#define _TIF_NOTIFY_RESUME (1<<TIF_NOTIFY_RESUME)
#define _TIF_SIGPENDING (1<<TIF_SIGPENDING)
#define _TIF_NEED_RESCHED (1<<TIF_NEED_RESCHED)
+#define _TIF_TLB_WAIT (1<<TIF_TLB_WAIT)
#define _TIF_PER_TRAP (1<<TIF_PER_TRAP)
#define _TIF_MCCK_PENDING (1<<TIF_MCCK_PENDING)
#define _TIF_SYSCALL_TRACE (1<<TIF_SYSCALL_TRACE)
diff --git a/arch/s390/include/asm/uaccess.h b/arch/s390/include/asm/uaccess.h
index 79330af..4133b3f 100644
--- a/arch/s390/include/asm/uaccess.h
+++ b/arch/s390/include/asm/uaccess.h
@@ -92,33 +92,58 @@
#define ARCH_HAS_SORT_EXTABLE
#define ARCH_HAS_SEARCH_EXTABLE
-struct uaccess_ops {
- size_t (*copy_from_user)(size_t, const void __user *, void *);
- size_t (*copy_to_user)(size_t, void __user *, const void *);
- size_t (*copy_in_user)(size_t, void __user *, const void __user *);
- size_t (*clear_user)(size_t, void __user *);
- size_t (*strnlen_user)(size_t, const char __user *);
- size_t (*strncpy_from_user)(size_t, const char __user *, char *);
- int (*futex_atomic_op)(int op, u32 __user *, int oparg, int *old);
- int (*futex_atomic_cmpxchg)(u32 *, u32 __user *, u32 old, u32 new);
-};
+int __handle_fault(unsigned long, unsigned long, int);
-extern struct uaccess_ops uaccess;
-extern struct uaccess_ops uaccess_mvcos;
-extern struct uaccess_ops uaccess_pt;
+/**
+ * __copy_from_user: - Copy a block of data from user space, with less checking.
+ * @to: Destination address, in kernel space.
+ * @from: Source address, in user space.
+ * @n: Number of bytes to copy.
+ *
+ * Context: User context only. This function may sleep.
+ *
+ * Copy data from user space to kernel space. Caller must check
+ * the specified block with access_ok() before calling this function.
+ *
+ * Returns number of bytes that could not be copied.
+ * On success, this will be zero.
+ *
+ * If some data could not be copied, this function will pad the copied
+ * data to the requested size using zero bytes.
+ */
+unsigned long __must_check __copy_from_user(void *to, const void __user *from,
+ unsigned long n);
-extern int __handle_fault(unsigned long, unsigned long, int);
+/**
+ * __copy_to_user: - Copy a block of data into user space, with less checking.
+ * @to: Destination address, in user space.
+ * @from: Source address, in kernel space.
+ * @n: Number of bytes to copy.
+ *
+ * Context: User context only. This function may sleep.
+ *
+ * Copy data from kernel space to user space. Caller must check
+ * the specified block with access_ok() before calling this function.
+ *
+ * Returns number of bytes that could not be copied.
+ * On success, this will be zero.
+ */
+unsigned long __must_check __copy_to_user(void __user *to, const void *from,
+ unsigned long n);
-static inline int __put_user_fn(size_t size, void __user *ptr, void *x)
+#define __copy_to_user_inatomic __copy_to_user
+#define __copy_from_user_inatomic __copy_from_user
+
+static inline int __put_user_fn(void *x, void __user *ptr, unsigned long size)
{
- size = uaccess.copy_to_user(size, ptr, x);
- return size ? -EFAULT : size;
+ size = __copy_to_user(ptr, x, size);
+ return size ? -EFAULT : 0;
}
-static inline int __get_user_fn(size_t size, const void __user *ptr, void *x)
+static inline int __get_user_fn(void *x, const void __user *ptr, unsigned long size)
{
- size = uaccess.copy_from_user(size, ptr, x);
- return size ? -EFAULT : size;
+ size = __copy_from_user(x, ptr, size);
+ return size ? -EFAULT : 0;
}
/*
@@ -135,8 +160,8 @@
case 2: \
case 4: \
case 8: \
- __pu_err = __put_user_fn(sizeof (*(ptr)), \
- ptr, &__x); \
+ __pu_err = __put_user_fn(&__x, ptr, \
+ sizeof(*(ptr))); \
break; \
default: \
__put_user_bad(); \
@@ -152,7 +177,7 @@
})
-extern int __put_user_bad(void) __attribute__((noreturn));
+int __put_user_bad(void) __attribute__((noreturn));
#define __get_user(x, ptr) \
({ \
@@ -161,29 +186,29 @@
switch (sizeof(*(ptr))) { \
case 1: { \
unsigned char __x; \
- __gu_err = __get_user_fn(sizeof (*(ptr)), \
- ptr, &__x); \
+ __gu_err = __get_user_fn(&__x, ptr, \
+ sizeof(*(ptr))); \
(x) = *(__force __typeof__(*(ptr)) *) &__x; \
break; \
}; \
case 2: { \
unsigned short __x; \
- __gu_err = __get_user_fn(sizeof (*(ptr)), \
- ptr, &__x); \
+ __gu_err = __get_user_fn(&__x, ptr, \
+ sizeof(*(ptr))); \
(x) = *(__force __typeof__(*(ptr)) *) &__x; \
break; \
}; \
case 4: { \
unsigned int __x; \
- __gu_err = __get_user_fn(sizeof (*(ptr)), \
- ptr, &__x); \
+ __gu_err = __get_user_fn(&__x, ptr, \
+ sizeof(*(ptr))); \
(x) = *(__force __typeof__(*(ptr)) *) &__x; \
break; \
}; \
case 8: { \
unsigned long long __x; \
- __gu_err = __get_user_fn(sizeof (*(ptr)), \
- ptr, &__x); \
+ __gu_err = __get_user_fn(&__x, ptr, \
+ sizeof(*(ptr))); \
(x) = *(__force __typeof__(*(ptr)) *) &__x; \
break; \
}; \
@@ -200,35 +225,12 @@
__get_user(x, ptr); \
})
-extern int __get_user_bad(void) __attribute__((noreturn));
+int __get_user_bad(void) __attribute__((noreturn));
#define __put_user_unaligned __put_user
#define __get_user_unaligned __get_user
/**
- * __copy_to_user: - Copy a block of data into user space, with less checking.
- * @to: Destination address, in user space.
- * @from: Source address, in kernel space.
- * @n: Number of bytes to copy.
- *
- * Context: User context only. This function may sleep.
- *
- * Copy data from kernel space to user space. Caller must check
- * the specified block with access_ok() before calling this function.
- *
- * Returns number of bytes that could not be copied.
- * On success, this will be zero.
- */
-static inline unsigned long __must_check
-__copy_to_user(void __user *to, const void *from, unsigned long n)
-{
- return uaccess.copy_to_user(n, to, from);
-}
-
-#define __copy_to_user_inatomic __copy_to_user
-#define __copy_from_user_inatomic __copy_from_user
-
-/**
* copy_to_user: - Copy a block of data into user space.
* @to: Destination address, in user space.
* @from: Source address, in kernel space.
@@ -248,30 +250,7 @@
return __copy_to_user(to, from, n);
}
-/**
- * __copy_from_user: - Copy a block of data from user space, with less checking.
- * @to: Destination address, in kernel space.
- * @from: Source address, in user space.
- * @n: Number of bytes to copy.
- *
- * Context: User context only. This function may sleep.
- *
- * Copy data from user space to kernel space. Caller must check
- * the specified block with access_ok() before calling this function.
- *
- * Returns number of bytes that could not be copied.
- * On success, this will be zero.
- *
- * If some data could not be copied, this function will pad the copied
- * data to the requested size using zero bytes.
- */
-static inline unsigned long __must_check
-__copy_from_user(void *to, const void __user *from, unsigned long n)
-{
- return uaccess.copy_from_user(n, from, to);
-}
-
-extern void copy_from_user_overflow(void)
+void copy_from_user_overflow(void)
#ifdef CONFIG_DEBUG_STRICT_USER_COPY_CHECKS
__compiletime_warning("copy_from_user() buffer size is not provably correct")
#endif
@@ -306,11 +285,8 @@
return __copy_from_user(to, from, n);
}
-static inline unsigned long __must_check
-__copy_in_user(void __user *to, const void __user *from, unsigned long n)
-{
- return uaccess.copy_in_user(n, to, from);
-}
+unsigned long __must_check
+__copy_in_user(void __user *to, const void __user *from, unsigned long n);
static inline unsigned long __must_check
copy_in_user(void __user *to, const void __user *from, unsigned long n)
@@ -322,18 +298,22 @@
/*
* Copy a null terminated string from userspace.
*/
+
+long __strncpy_from_user(char *dst, const char __user *src, long count);
+
static inline long __must_check
strncpy_from_user(char *dst, const char __user *src, long count)
{
might_fault();
- return uaccess.strncpy_from_user(count, src, dst);
+ return __strncpy_from_user(dst, src, count);
}
-static inline unsigned long
-strnlen_user(const char __user * src, unsigned long n)
+unsigned long __must_check __strnlen_user(const char __user *src, unsigned long count);
+
+static inline unsigned long strnlen_user(const char __user *src, unsigned long n)
{
might_fault();
- return uaccess.strnlen_user(n, src);
+ return __strnlen_user(src, n);
}
/**
@@ -355,21 +335,14 @@
/*
* Zero Userspace
*/
+unsigned long __must_check __clear_user(void __user *to, unsigned long size);
-static inline unsigned long __must_check
-__clear_user(void __user *to, unsigned long n)
-{
- return uaccess.clear_user(n, to);
-}
-
-static inline unsigned long __must_check
-clear_user(void __user *to, unsigned long n)
+static inline unsigned long __must_check clear_user(void __user *to, unsigned long n)
{
might_fault();
- return uaccess.clear_user(n, to);
+ return __clear_user(to, n);
}
-extern int copy_to_user_real(void __user *dest, void *src, size_t count);
-extern int copy_from_user_real(void *dest, void __user *src, size_t count);
+int copy_to_user_real(void __user *dest, void *src, unsigned long count);
#endif /* __S390_UACCESS_H */
diff --git a/arch/s390/include/uapi/asm/ptrace.h b/arch/s390/include/uapi/asm/ptrace.h
index 7e0b498..a150f4f 100644
--- a/arch/s390/include/uapi/asm/ptrace.h
+++ b/arch/s390/include/uapi/asm/ptrace.h
@@ -403,6 +403,12 @@
#define PTRACE_TE_ABORT_RAND 0x5011
/*
+ * The numbers chosen here are somewhat arbitrary but absolutely MUST
+ * not overlap with any of the number assigned in <linux/ptrace.h>.
+ */
+#define PTRACE_SINGLEBLOCK 12 /* resume execution until next branch */
+
+/*
* PT_PROT definition is loosely based on hppa bsd definition in
* gdb/hppab-nat.c
*/
diff --git a/arch/s390/kernel/Makefile b/arch/s390/kernel/Makefile
index 1b3ac09..a95c4ca 100644
--- a/arch/s390/kernel/Makefile
+++ b/arch/s390/kernel/Makefile
@@ -47,9 +47,8 @@
obj-$(CONFIG_HIBERNATION) += suspend.o swsusp_asm64.o
obj-$(CONFIG_AUDIT) += audit.o
compat-obj-$(CONFIG_AUDIT) += compat_audit.o
-obj-$(CONFIG_COMPAT) += compat_linux.o compat_signal.o \
- compat_wrapper.o compat_exec_domain.o \
- $(compat-obj-y)
+obj-$(CONFIG_COMPAT) += compat_linux.o compat_signal.o
+obj-$(CONFIG_COMPAT) += compat_wrapper.o $(compat-obj-y)
obj-$(CONFIG_STACKTRACE) += stacktrace.o
obj-$(CONFIG_KPROBES) += kprobes.o
diff --git a/arch/s390/kernel/compat_exec_domain.c b/arch/s390/kernel/compat_exec_domain.c
deleted file mode 100644
index 765fabd..0000000
--- a/arch/s390/kernel/compat_exec_domain.c
+++ /dev/null
@@ -1,29 +0,0 @@
-/*
- * Support for 32-bit Linux for S390 personality.
- *
- * Copyright IBM Corp. 2000
- * Author(s): Gerhard Tonn (ton@de.ibm.com)
- *
- *
- */
-
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/personality.h>
-#include <linux/sched.h>
-
-static struct exec_domain s390_exec_domain;
-
-static int __init s390_init (void)
-{
- s390_exec_domain.name = "Linux/s390";
- s390_exec_domain.handler = NULL;
- s390_exec_domain.pers_low = PER_LINUX32;
- s390_exec_domain.pers_high = PER_LINUX32;
- s390_exec_domain.signal_map = default_exec_domain.signal_map;
- s390_exec_domain.signal_invmap = default_exec_domain.signal_invmap;
- register_exec_domain(&s390_exec_domain);
- return 0;
-}
-
-__initcall(s390_init);
diff --git a/arch/s390/kernel/early.c b/arch/s390/kernel/early.c
index fca20b5..6b59443 100644
--- a/arch/s390/kernel/early.c
+++ b/arch/s390/kernel/early.c
@@ -380,8 +380,6 @@
S390_lowcore.machine_flags |= MACHINE_FLAG_EDAT2;
if (test_facility(3))
S390_lowcore.machine_flags |= MACHINE_FLAG_IDTE;
- if (test_facility(27))
- S390_lowcore.machine_flags |= MACHINE_FLAG_MVCOS;
if (test_facility(40))
S390_lowcore.machine_flags |= MACHINE_FLAG_LPP;
if (test_facility(50) && test_facility(73))
diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S
index 0dc2b6d..526d373 100644
--- a/arch/s390/kernel/entry.S
+++ b/arch/s390/kernel/entry.S
@@ -43,6 +43,7 @@
_TIF_MCCK_PENDING)
_TIF_TRACE = (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | _TIF_SECCOMP | \
_TIF_SYSCALL_TRACEPOINT)
+_TIF_TRANSFER = (_TIF_MCCK_PENDING | _TIF_TLB_WAIT)
STACK_SHIFT = PAGE_SHIFT + THREAD_ORDER
STACK_SIZE = 1 << STACK_SHIFT
@@ -159,10 +160,12 @@
lctl %c4,%c4,__TASK_pid(%r3) # load pid to control reg. 4
mvc __LC_CURRENT_PID(4,%r0),__TASK_pid(%r3) # store pid of next
l %r15,__THREAD_ksp(%r3) # load kernel stack of next
- tm __TI_flags+3(%r4),_TIF_MCCK_PENDING # machine check pending?
+ lhi %r6,_TIF_TRANSFER # transfer TIF bits
+ n %r6,__TI_flags(%r4) # isolate TIF bits
jz 0f
- ni __TI_flags+3(%r4),255-_TIF_MCCK_PENDING # clear flag in prev
- oi __TI_flags+3(%r5),_TIF_MCCK_PENDING # set it in next
+ o %r6,__TI_flags(%r5) # set TIF bits of next
+ st %r6,__TI_flags(%r5)
+ ni __TI_flags+3(%r4),255-_TIF_TRANSFER # clear TIF bits of prev
0: lm %r6,%r15,__SF_GPRS(%r15) # load gprs of next task
br %r14
diff --git a/arch/s390/kernel/entry64.S b/arch/s390/kernel/entry64.S
index 384e609..e09dbe5 100644
--- a/arch/s390/kernel/entry64.S
+++ b/arch/s390/kernel/entry64.S
@@ -48,6 +48,7 @@
_TIF_MCCK_PENDING)
_TIF_TRACE = (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | _TIF_SECCOMP | \
_TIF_SYSCALL_TRACEPOINT)
+_TIF_TRANSFER = (_TIF_MCCK_PENDING | _TIF_TLB_WAIT)
#define BASED(name) name-system_call(%r13)
@@ -189,10 +190,12 @@
lctl %c4,%c4,__TASK_pid(%r3) # load pid to control reg. 4
mvc __LC_CURRENT_PID+4(4,%r0),__TASK_pid(%r3) # store pid of next
lg %r15,__THREAD_ksp(%r3) # load kernel stack of next
- tm __TI_flags+7(%r4),_TIF_MCCK_PENDING # machine check pending?
+ llill %r6,_TIF_TRANSFER # transfer TIF bits
+ ng %r6,__TI_flags(%r4) # isolate TIF bits
jz 0f
- ni __TI_flags+7(%r4),255-_TIF_MCCK_PENDING # clear flag in prev
- oi __TI_flags+7(%r5),_TIF_MCCK_PENDING # set it in next
+ og %r6,__TI_flags(%r5) # set TIF bits of next
+ stg %r6,__TI_flags(%r5)
+ ni __TI_flags+7(%r4),255-_TIF_TRANSFER # clear TIF bits of prev
0: lmg %r6,%r15,__SF_GPRS(%r15) # load gprs of next task
br %r14
diff --git a/arch/s390/kernel/perf_event.c b/arch/s390/kernel/perf_event.c
index 5d2dfa3..61595c1 100644
--- a/arch/s390/kernel/perf_event.c
+++ b/arch/s390/kernel/perf_event.c
@@ -121,7 +121,7 @@
: PERF_RECORD_MISC_KERNEL;
}
-void print_debug_cf(void)
+static void print_debug_cf(void)
{
struct cpumf_ctr_info cf_info;
int cpu = smp_processor_id();
diff --git a/arch/s390/kernel/ptrace.c b/arch/s390/kernel/ptrace.c
index f6be608..4ac8faf 100644
--- a/arch/s390/kernel/ptrace.c
+++ b/arch/s390/kernel/ptrace.c
@@ -85,7 +85,10 @@
/* merge TIF_SINGLE_STEP into user specified PER registers. */
if (test_tsk_thread_flag(task, TIF_SINGLE_STEP)) {
- new.control |= PER_EVENT_IFETCH;
+ if (test_tsk_thread_flag(task, TIF_BLOCK_STEP))
+ new.control |= PER_EVENT_BRANCH;
+ else
+ new.control |= PER_EVENT_IFETCH;
#ifdef CONFIG_64BIT
new.control |= PER_CONTROL_SUSPENSION;
new.control |= PER_EVENT_TRANSACTION_END;
@@ -107,14 +110,22 @@
void user_enable_single_step(struct task_struct *task)
{
+ clear_tsk_thread_flag(task, TIF_BLOCK_STEP);
set_tsk_thread_flag(task, TIF_SINGLE_STEP);
}
void user_disable_single_step(struct task_struct *task)
{
+ clear_tsk_thread_flag(task, TIF_BLOCK_STEP);
clear_tsk_thread_flag(task, TIF_SINGLE_STEP);
}
+void user_enable_block_step(struct task_struct *task)
+{
+ set_tsk_thread_flag(task, TIF_SINGLE_STEP);
+ set_tsk_thread_flag(task, TIF_BLOCK_STEP);
+}
+
/*
* Called by kernel/ptrace.c when detaching..
*
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index 09e2f46..f70f248 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -47,7 +47,6 @@
#include <linux/compat.h>
#include <asm/ipl.h>
-#include <asm/uaccess.h>
#include <asm/facility.h>
#include <asm/smp.h>
#include <asm/mmu_context.h>
@@ -65,12 +64,6 @@
#include "entry.h"
/*
- * User copy operations.
- */
-struct uaccess_ops uaccess;
-EXPORT_SYMBOL(uaccess);
-
-/*
* Machine setup..
*/
unsigned int console_mode = 0;
@@ -294,14 +287,6 @@
}
early_param("vmalloc", parse_vmalloc);
-static int __init early_parse_user_mode(char *p)
-{
- if (!p || strcmp(p, "primary") == 0)
- return 0;
- return 1;
-}
-early_param("user_mode", early_parse_user_mode);
-
void *restart_stack __attribute__((__section__(".data")));
static void __init setup_lowcore(void)
@@ -1009,8 +994,6 @@
init_mm.end_data = (unsigned long) &_edata;
init_mm.brk = (unsigned long) &_end;
- uaccess = MACHINE_HAS_MVCOS ? uaccess_mvcos : uaccess_pt;
-
parse_early_param();
detect_memory_layout(memory_chunk, memory_end);
os_info_init();
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index a7125b6..8827883 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -773,11 +773,11 @@
void __init smp_fill_possible_mask(void)
{
- unsigned int possible, cpu;
+ unsigned int possible, sclp, cpu;
- possible = setup_possible_cpus;
- if (!possible)
- possible = MACHINE_IS_VM ? 64 : nr_cpu_ids;
+ sclp = sclp_get_max_cpu() ?: nr_cpu_ids;
+ possible = setup_possible_cpus ?: nr_cpu_ids;
+ possible = min(possible, sclp);
for (cpu = 0; cpu < possible && cpu < nr_cpu_ids; cpu++)
set_cpu_possible(cpu, true);
}
diff --git a/arch/s390/kernel/topology.c b/arch/s390/kernel/topology.c
index 4b2e3e3..6298fed 100644
--- a/arch/s390/kernel/topology.c
+++ b/arch/s390/kernel/topology.c
@@ -451,7 +451,6 @@
}
set_topology_timer();
out:
- update_cpu_masks();
return device_create_file(cpu_subsys.dev_root, &dev_attr_dispatching);
}
device_initcall(topology_init);
diff --git a/arch/s390/kvm/diag.c b/arch/s390/kvm/diag.c
index 8216c0e..6f9cfa5 100644
--- a/arch/s390/kvm/diag.c
+++ b/arch/s390/kvm/diag.c
@@ -13,6 +13,7 @@
#include <linux/kvm.h>
#include <linux/kvm_host.h>
+#include <asm/pgalloc.h>
#include <asm/virtio-ccw.h>
#include "kvm-s390.h"
#include "trace.h"
@@ -86,9 +87,11 @@
switch (subcode) {
case 3:
vcpu->run->s390_reset_flags = KVM_S390_RESET_CLEAR;
+ page_table_reset_pgste(current->mm, 0, TASK_SIZE);
break;
case 4:
vcpu->run->s390_reset_flags = 0;
+ page_table_reset_pgste(current->mm, 0, TASK_SIZE);
break;
default:
return -EOPNOTSUPP;
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index e0676f3..10b5db3 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -68,6 +68,7 @@
{ "instruction_storage_key", VCPU_STAT(instruction_storage_key) },
{ "instruction_stsch", VCPU_STAT(instruction_stsch) },
{ "instruction_chsc", VCPU_STAT(instruction_chsc) },
+ { "instruction_essa", VCPU_STAT(instruction_essa) },
{ "instruction_stsi", VCPU_STAT(instruction_stsi) },
{ "instruction_stfl", VCPU_STAT(instruction_stfl) },
{ "instruction_tprot", VCPU_STAT(instruction_tprot) },
@@ -283,7 +284,11 @@
if (kvm_is_ucontrol(vcpu->kvm))
gmap_free(vcpu->arch.gmap);
+ if (vcpu->arch.sie_block->cbrlo)
+ __free_page(__pfn_to_page(
+ vcpu->arch.sie_block->cbrlo >> PAGE_SHIFT));
free_page((unsigned long)(vcpu->arch.sie_block));
+
kvm_vcpu_uninit(vcpu);
kmem_cache_free(kvm_vcpu_cache, vcpu);
}
@@ -390,6 +395,8 @@
int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
{
+ struct page *cbrl;
+
atomic_set(&vcpu->arch.sie_block->cpuflags, CPUSTAT_ZARCH |
CPUSTAT_SM |
CPUSTAT_STOPPED |
@@ -401,6 +408,14 @@
vcpu->arch.sie_block->ecb2 = 8;
vcpu->arch.sie_block->eca = 0xC1002001U;
vcpu->arch.sie_block->fac = (int) (long) vfacilities;
+ if (kvm_enabled_cmma()) {
+ cbrl = alloc_page(GFP_KERNEL | __GFP_ZERO);
+ if (cbrl) {
+ vcpu->arch.sie_block->ecb2 |= 0x80;
+ vcpu->arch.sie_block->ecb2 &= ~0x08;
+ vcpu->arch.sie_block->cbrlo = page_to_phys(cbrl);
+ }
+ }
hrtimer_init(&vcpu->arch.ckc_timer, CLOCK_REALTIME, HRTIMER_MODE_ABS);
tasklet_init(&vcpu->arch.tasklet, kvm_s390_tasklet,
(unsigned long) vcpu);
@@ -761,6 +776,16 @@
return rc;
}
+bool kvm_enabled_cmma(void)
+{
+ if (!MACHINE_IS_LPAR)
+ return false;
+ /* only enable for z10 and later */
+ if (!MACHINE_HAS_EDAT1)
+ return false;
+ return true;
+}
+
static int __vcpu_run(struct kvm_vcpu *vcpu)
{
int rc, exit_reason;
diff --git a/arch/s390/kvm/kvm-s390.h b/arch/s390/kvm/kvm-s390.h
index f9559b0..564514f4 100644
--- a/arch/s390/kvm/kvm-s390.h
+++ b/arch/s390/kvm/kvm-s390.h
@@ -156,6 +156,8 @@
void s390_vcpu_unblock(struct kvm_vcpu *vcpu);
void exit_sie(struct kvm_vcpu *vcpu);
void exit_sie_sync(struct kvm_vcpu *vcpu);
+/* are we going to support cmma? */
+bool kvm_enabled_cmma(void);
/* implemented in diag.c */
int kvm_s390_handle_diag(struct kvm_vcpu *vcpu);
diff --git a/arch/s390/kvm/priv.c b/arch/s390/kvm/priv.c
index 75beea6..aacb6b1 100644
--- a/arch/s390/kvm/priv.c
+++ b/arch/s390/kvm/priv.c
@@ -636,8 +636,49 @@
return 0;
}
+static int handle_essa(struct kvm_vcpu *vcpu)
+{
+ /* entries expected to be 1FF */
+ int entries = (vcpu->arch.sie_block->cbrlo & ~PAGE_MASK) >> 3;
+ unsigned long *cbrlo, cbrle;
+ struct gmap *gmap;
+ int i;
+
+ VCPU_EVENT(vcpu, 5, "cmma release %d pages", entries);
+ gmap = vcpu->arch.gmap;
+ vcpu->stat.instruction_essa++;
+ if (!kvm_enabled_cmma() || !vcpu->arch.sie_block->cbrlo)
+ return kvm_s390_inject_program_int(vcpu, PGM_OPERATION);
+
+ if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE)
+ return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP);
+
+ if (((vcpu->arch.sie_block->ipb & 0xf0000000) >> 28) > 6)
+ return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
+
+ /* Rewind PSW to repeat the ESSA instruction */
+ vcpu->arch.sie_block->gpsw.addr =
+ __rewind_psw(vcpu->arch.sie_block->gpsw, 4);
+ vcpu->arch.sie_block->cbrlo &= PAGE_MASK; /* reset nceo */
+ cbrlo = phys_to_virt(vcpu->arch.sie_block->cbrlo);
+ down_read(&gmap->mm->mmap_sem);
+ for (i = 0; i < entries; ++i) {
+ cbrle = cbrlo[i];
+ if (unlikely(cbrle & ~PAGE_MASK || cbrle < 2 * PAGE_SIZE))
+ /* invalid entry */
+ break;
+ /* try to free backing */
+ __gmap_zap(cbrle, gmap);
+ }
+ up_read(&gmap->mm->mmap_sem);
+ if (i < entries)
+ return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
+ return 0;
+}
+
static const intercept_handler_t b9_handlers[256] = {
[0x8d] = handle_epsw,
+ [0xab] = handle_essa,
[0xaf] = handle_pfmf,
};
diff --git a/arch/s390/lib/Makefile b/arch/s390/lib/Makefile
index b068729..e3fffe1 100644
--- a/arch/s390/lib/Makefile
+++ b/arch/s390/lib/Makefile
@@ -2,8 +2,7 @@
# Makefile for s390-specific library files..
#
-lib-y += delay.o string.o uaccess_pt.o find.o
+lib-y += delay.o string.o uaccess_pt.o uaccess_mvcos.o find.o
obj-$(CONFIG_32BIT) += div64.o qrnnd.o ucmpdi2.o mem32.o
obj-$(CONFIG_64BIT) += mem64.o
-lib-$(CONFIG_64BIT) += uaccess_mvcos.o
lib-$(CONFIG_SMP) += spinlock.o
diff --git a/arch/s390/lib/find.c b/arch/s390/lib/find.c
index 620d34d..922003c 100644
--- a/arch/s390/lib/find.c
+++ b/arch/s390/lib/find.c
@@ -4,7 +4,7 @@
* On s390x the bits are numbered:
* |0..............63|64............127|128...........191|192...........255|
* and on s390:
- * |0.....31|31....63|64....95|96...127|128..159|160..191|192..223|224..255|
+ * |0.....31|32....63|64....95|96...127|128..159|160..191|192..223|224..255|
*
* The reason for this bit numbering is the fact that the hardware sets bits
* in a bitmap starting at bit 0 (MSB) and we don't want to scan the bitmap
diff --git a/arch/s390/lib/uaccess.h b/arch/s390/lib/uaccess.h
index b1a2217..c7e0e81f 100644
--- a/arch/s390/lib/uaccess.h
+++ b/arch/s390/lib/uaccess.h
@@ -6,7 +6,11 @@
#ifndef __ARCH_S390_LIB_UACCESS_H
#define __ARCH_S390_LIB_UACCESS_H
-extern int futex_atomic_op_pt(int, u32 __user *, int, int *);
-extern int futex_atomic_cmpxchg_pt(u32 *, u32 __user *, u32, u32);
+unsigned long copy_from_user_pt(void *to, const void __user *from, unsigned long n);
+unsigned long copy_to_user_pt(void __user *to, const void *from, unsigned long n);
+unsigned long copy_in_user_pt(void __user *to, const void __user *from, unsigned long n);
+unsigned long clear_user_pt(void __user *to, unsigned long n);
+unsigned long strnlen_user_pt(const char __user *src, unsigned long count);
+long strncpy_from_user_pt(char *dst, const char __user *src, long count);
#endif /* __ARCH_S390_LIB_UACCESS_H */
diff --git a/arch/s390/lib/uaccess_mvcos.c b/arch/s390/lib/uaccess_mvcos.c
index 4b7993b..ae97b8d 100644
--- a/arch/s390/lib/uaccess_mvcos.c
+++ b/arch/s390/lib/uaccess_mvcos.c
@@ -6,8 +6,11 @@
* Gerald Schaefer (gerald.schaefer@de.ibm.com)
*/
+#include <linux/jump_label.h>
#include <linux/errno.h>
+#include <linux/init.h>
#include <linux/mm.h>
+#include <asm/facility.h>
#include <asm/uaccess.h>
#include <asm/futex.h>
#include "uaccess.h"
@@ -26,7 +29,10 @@
#define SLR "slgr"
#endif
-static size_t copy_from_user_mvcos(size_t size, const void __user *ptr, void *x)
+static struct static_key have_mvcos = STATIC_KEY_INIT_TRUE;
+
+static inline unsigned long copy_from_user_mvcos(void *x, const void __user *ptr,
+ unsigned long size)
{
register unsigned long reg0 asm("0") = 0x81UL;
unsigned long tmp1, tmp2;
@@ -65,7 +71,16 @@
return size;
}
-static size_t copy_to_user_mvcos(size_t size, void __user *ptr, const void *x)
+unsigned long __copy_from_user(void *to, const void __user *from, unsigned long n)
+{
+ if (static_key_true(&have_mvcos))
+ return copy_from_user_mvcos(to, from, n);
+ return copy_from_user_pt(to, from, n);
+}
+EXPORT_SYMBOL(__copy_from_user);
+
+static inline unsigned long copy_to_user_mvcos(void __user *ptr, const void *x,
+ unsigned long size)
{
register unsigned long reg0 asm("0") = 0x810000UL;
unsigned long tmp1, tmp2;
@@ -94,8 +109,16 @@
return size;
}
-static size_t copy_in_user_mvcos(size_t size, void __user *to,
- const void __user *from)
+unsigned long __copy_to_user(void __user *to, const void *from, unsigned long n)
+{
+ if (static_key_true(&have_mvcos))
+ return copy_to_user_mvcos(to, from, n);
+ return copy_to_user_pt(to, from, n);
+}
+EXPORT_SYMBOL(__copy_to_user);
+
+static inline unsigned long copy_in_user_mvcos(void __user *to, const void __user *from,
+ unsigned long size)
{
register unsigned long reg0 asm("0") = 0x810081UL;
unsigned long tmp1, tmp2;
@@ -117,7 +140,15 @@
return size;
}
-static size_t clear_user_mvcos(size_t size, void __user *to)
+unsigned long __copy_in_user(void __user *to, const void __user *from, unsigned long n)
+{
+ if (static_key_true(&have_mvcos))
+ return copy_in_user_mvcos(to, from, n);
+ return copy_in_user_pt(to, from, n);
+}
+EXPORT_SYMBOL(__copy_in_user);
+
+static inline unsigned long clear_user_mvcos(void __user *to, unsigned long size)
{
register unsigned long reg0 asm("0") = 0x810000UL;
unsigned long tmp1, tmp2;
@@ -145,17 +176,26 @@
return size;
}
-static size_t strnlen_user_mvcos(size_t count, const char __user *src)
+unsigned long __clear_user(void __user *to, unsigned long size)
{
- size_t done, len, offset, len_str;
+ if (static_key_true(&have_mvcos))
+ return clear_user_mvcos(to, size);
+ return clear_user_pt(to, size);
+}
+EXPORT_SYMBOL(__clear_user);
+
+static inline unsigned long strnlen_user_mvcos(const char __user *src,
+ unsigned long count)
+{
+ unsigned long done, len, offset, len_str;
char buf[256];
done = 0;
do {
- offset = (size_t)src & ~PAGE_MASK;
+ offset = (unsigned long)src & ~PAGE_MASK;
len = min(256UL, PAGE_SIZE - offset);
len = min(count - done, len);
- if (copy_from_user_mvcos(len, src, buf))
+ if (copy_from_user_mvcos(buf, src, len))
return 0;
len_str = strnlen(buf, len);
done += len_str;
@@ -164,18 +204,26 @@
return done + 1;
}
-static size_t strncpy_from_user_mvcos(size_t count, const char __user *src,
- char *dst)
+unsigned long __strnlen_user(const char __user *src, unsigned long count)
{
- size_t done, len, offset, len_str;
+ if (static_key_true(&have_mvcos))
+ return strnlen_user_mvcos(src, count);
+ return strnlen_user_pt(src, count);
+}
+EXPORT_SYMBOL(__strnlen_user);
- if (unlikely(!count))
+static inline long strncpy_from_user_mvcos(char *dst, const char __user *src,
+ long count)
+{
+ unsigned long done, len, offset, len_str;
+
+ if (unlikely(count <= 0))
return 0;
done = 0;
do {
- offset = (size_t)src & ~PAGE_MASK;
+ offset = (unsigned long)src & ~PAGE_MASK;
len = min(count - done, PAGE_SIZE - offset);
- if (copy_from_user_mvcos(len, src, dst))
+ if (copy_from_user_mvcos(dst, src, len))
return -EFAULT;
len_str = strnlen(dst, len);
done += len_str;
@@ -185,13 +233,31 @@
return done;
}
-struct uaccess_ops uaccess_mvcos = {
- .copy_from_user = copy_from_user_mvcos,
- .copy_to_user = copy_to_user_mvcos,
- .copy_in_user = copy_in_user_mvcos,
- .clear_user = clear_user_mvcos,
- .strnlen_user = strnlen_user_mvcos,
- .strncpy_from_user = strncpy_from_user_mvcos,
- .futex_atomic_op = futex_atomic_op_pt,
- .futex_atomic_cmpxchg = futex_atomic_cmpxchg_pt,
-};
+long __strncpy_from_user(char *dst, const char __user *src, long count)
+{
+ if (static_key_true(&have_mvcos))
+ return strncpy_from_user_mvcos(dst, src, count);
+ return strncpy_from_user_pt(dst, src, count);
+}
+EXPORT_SYMBOL(__strncpy_from_user);
+
+/*
+ * The uaccess page tabe walk variant can be enforced with the "uaccesspt"
+ * kernel parameter. This is mainly for debugging purposes.
+ */
+static int force_uaccess_pt __initdata;
+
+static int __init parse_uaccess_pt(char *__unused)
+{
+ force_uaccess_pt = 1;
+ return 0;
+}
+early_param("uaccesspt", parse_uaccess_pt);
+
+static int __init uaccess_init(void)
+{
+ if (IS_ENABLED(CONFIG_32BIT) || force_uaccess_pt || !test_facility(27))
+ static_key_slow_dec(&have_mvcos);
+ return 0;
+}
+early_initcall(uaccess_init);
diff --git a/arch/s390/lib/uaccess_pt.c b/arch/s390/lib/uaccess_pt.c
index 61ebcc9..8d39760 100644
--- a/arch/s390/lib/uaccess_pt.c
+++ b/arch/s390/lib/uaccess_pt.c
@@ -22,7 +22,7 @@
#define SLR "slgr"
#endif
-static size_t strnlen_kernel(size_t count, const char __user *src)
+static unsigned long strnlen_kernel(const char __user *src, unsigned long count)
{
register unsigned long reg0 asm("0") = 0UL;
unsigned long tmp1, tmp2;
@@ -42,8 +42,8 @@
return count;
}
-static size_t copy_in_kernel(size_t count, void __user *to,
- const void __user *from)
+static unsigned long copy_in_kernel(void __user *to, const void __user *from,
+ unsigned long count)
{
unsigned long tmp1;
@@ -146,8 +146,8 @@
#endif /* CONFIG_64BIT */
-static __always_inline size_t __user_copy_pt(unsigned long uaddr, void *kptr,
- size_t n, int write_user)
+static inline unsigned long __user_copy_pt(unsigned long uaddr, void *kptr,
+ unsigned long n, int write_user)
{
struct mm_struct *mm = current->mm;
unsigned long offset, done, size, kaddr;
@@ -189,8 +189,7 @@
* Do DAT for user address by page table walk, return kernel address.
* This function needs to be called with current->mm->page_table_lock held.
*/
-static __always_inline unsigned long __dat_user_addr(unsigned long uaddr,
- int write)
+static inline unsigned long __dat_user_addr(unsigned long uaddr, int write)
{
struct mm_struct *mm = current->mm;
unsigned long kaddr;
@@ -211,29 +210,29 @@
return 0;
}
-static size_t copy_from_user_pt(size_t n, const void __user *from, void *to)
+unsigned long copy_from_user_pt(void *to, const void __user *from, unsigned long n)
{
- size_t rc;
+ unsigned long rc;
if (segment_eq(get_fs(), KERNEL_DS))
- return copy_in_kernel(n, (void __user *) to, from);
+ return copy_in_kernel((void __user *) to, from, n);
rc = __user_copy_pt((unsigned long) from, to, n, 0);
if (unlikely(rc))
memset(to + n - rc, 0, rc);
return rc;
}
-static size_t copy_to_user_pt(size_t n, void __user *to, const void *from)
+unsigned long copy_to_user_pt(void __user *to, const void *from, unsigned long n)
{
if (segment_eq(get_fs(), KERNEL_DS))
- return copy_in_kernel(n, to, (void __user *) from);
+ return copy_in_kernel(to, (void __user *) from, n);
return __user_copy_pt((unsigned long) to, (void *) from, n, 1);
}
-static size_t clear_user_pt(size_t n, void __user *to)
+unsigned long clear_user_pt(void __user *to, unsigned long n)
{
void *zpage = (void *) empty_zero_page;
- long done, size, ret;
+ unsigned long done, size, ret;
done = 0;
do {
@@ -242,7 +241,7 @@
else
size = n - done;
if (segment_eq(get_fs(), KERNEL_DS))
- ret = copy_in_kernel(n, to, (void __user *) zpage);
+ ret = copy_in_kernel(to, (void __user *) zpage, n);
else
ret = __user_copy_pt((unsigned long) to, zpage, size, 1);
done += size;
@@ -253,17 +252,17 @@
return 0;
}
-static size_t strnlen_user_pt(size_t count, const char __user *src)
+unsigned long strnlen_user_pt(const char __user *src, unsigned long count)
{
unsigned long uaddr = (unsigned long) src;
struct mm_struct *mm = current->mm;
unsigned long offset, done, len, kaddr;
- size_t len_str;
+ unsigned long len_str;
if (unlikely(!count))
return 0;
if (segment_eq(get_fs(), KERNEL_DS))
- return strnlen_kernel(count, src);
+ return strnlen_kernel(src, count);
if (!mm)
return 0;
done = 0;
@@ -289,19 +288,18 @@
goto retry;
}
-static size_t strncpy_from_user_pt(size_t count, const char __user *src,
- char *dst)
+long strncpy_from_user_pt(char *dst, const char __user *src, long count)
{
- size_t done, len, offset, len_str;
+ unsigned long done, len, offset, len_str;
- if (unlikely(!count))
+ if (unlikely(count <= 0))
return 0;
done = 0;
do {
- offset = (size_t)src & ~PAGE_MASK;
+ offset = (unsigned long)src & ~PAGE_MASK;
len = min(count - done, PAGE_SIZE - offset);
if (segment_eq(get_fs(), KERNEL_DS)) {
- if (copy_in_kernel(len, (void __user *) dst, src))
+ if (copy_in_kernel((void __user *) dst, src, len))
return -EFAULT;
} else {
if (__user_copy_pt((unsigned long) src, dst, len, 0))
@@ -315,8 +313,8 @@
return done;
}
-static size_t copy_in_user_pt(size_t n, void __user *to,
- const void __user *from)
+unsigned long copy_in_user_pt(void __user *to, const void __user *from,
+ unsigned long n)
{
struct mm_struct *mm = current->mm;
unsigned long offset_max, uaddr, done, size, error_code;
@@ -326,7 +324,7 @@
int write_user;
if (segment_eq(get_fs(), KERNEL_DS))
- return copy_in_kernel(n, to, from);
+ return copy_in_kernel(to, from, n);
if (!mm)
return n;
done = 0;
@@ -411,7 +409,7 @@
return ret;
}
-int futex_atomic_op_pt(int op, u32 __user *uaddr, int oparg, int *old)
+int __futex_atomic_op_inuser(int op, u32 __user *uaddr, int oparg, int *old)
{
int ret;
@@ -449,8 +447,8 @@
return ret;
}
-int futex_atomic_cmpxchg_pt(u32 *uval, u32 __user *uaddr,
- u32 oldval, u32 newval)
+int futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
+ u32 oldval, u32 newval)
{
int ret;
@@ -471,14 +469,3 @@
put_page(virt_to_page(uaddr));
return ret;
}
-
-struct uaccess_ops uaccess_pt = {
- .copy_from_user = copy_from_user_pt,
- .copy_to_user = copy_to_user_pt,
- .copy_in_user = copy_in_user_pt,
- .clear_user = clear_user_pt,
- .strnlen_user = strnlen_user_pt,
- .strncpy_from_user = strncpy_from_user_pt,
- .futex_atomic_op = futex_atomic_op_pt,
- .futex_atomic_cmpxchg = futex_atomic_cmpxchg_pt,
-};
diff --git a/arch/s390/mm/maccess.c b/arch/s390/mm/maccess.c
index d1e0e0c..2a2e354 100644
--- a/arch/s390/mm/maccess.c
+++ b/arch/s390/mm/maccess.c
@@ -128,7 +128,7 @@
/*
* Copy memory from kernel (real) to user (virtual)
*/
-int copy_to_user_real(void __user *dest, void *src, size_t count)
+int copy_to_user_real(void __user *dest, void *src, unsigned long count)
{
int offs = 0, size, rc;
char *buf;
@@ -152,32 +152,6 @@
}
/*
- * Copy memory from user (virtual) to kernel (real)
- */
-int copy_from_user_real(void *dest, void __user *src, size_t count)
-{
- int offs = 0, size, rc;
- char *buf;
-
- buf = (char *) __get_free_page(GFP_KERNEL);
- if (!buf)
- return -ENOMEM;
- rc = -EFAULT;
- while (offs < count) {
- size = min(PAGE_SIZE, count - offs);
- if (copy_from_user(buf, src + offs, size))
- goto out;
- if (memcpy_real(dest + offs, buf, size))
- goto out;
- offs += size;
- }
- rc = 0;
-out:
- free_page((unsigned long) buf);
- return rc;
-}
-
-/*
* Check if physical address is within prefix or zero page
*/
static int is_swapped(unsigned long addr)
diff --git a/arch/s390/mm/pgtable.c b/arch/s390/mm/pgtable.c
index 3584ed9..796c932 100644
--- a/arch/s390/mm/pgtable.c
+++ b/arch/s390/mm/pgtable.c
@@ -17,6 +17,7 @@
#include <linux/quicklist.h>
#include <linux/rcupdate.h>
#include <linux/slab.h>
+#include <linux/swapops.h>
#include <asm/pgtable.h>
#include <asm/pgalloc.h>
@@ -594,6 +595,82 @@
}
EXPORT_SYMBOL_GPL(gmap_fault);
+static void gmap_zap_swap_entry(swp_entry_t entry, struct mm_struct *mm)
+{
+ if (!non_swap_entry(entry))
+ dec_mm_counter(mm, MM_SWAPENTS);
+ else if (is_migration_entry(entry)) {
+ struct page *page = migration_entry_to_page(entry);
+
+ if (PageAnon(page))
+ dec_mm_counter(mm, MM_ANONPAGES);
+ else
+ dec_mm_counter(mm, MM_FILEPAGES);
+ }
+ free_swap_and_cache(entry);
+}
+
+/**
+ * The mm->mmap_sem lock must be held
+ */
+static void gmap_zap_unused(struct mm_struct *mm, unsigned long address)
+{
+ unsigned long ptev, pgstev;
+ spinlock_t *ptl;
+ pgste_t pgste;
+ pte_t *ptep, pte;
+
+ ptep = get_locked_pte(mm, address, &ptl);
+ if (unlikely(!ptep))
+ return;
+ pte = *ptep;
+ if (!pte_swap(pte))
+ goto out_pte;
+ /* Zap unused and logically-zero pages */
+ pgste = pgste_get_lock(ptep);
+ pgstev = pgste_val(pgste);
+ ptev = pte_val(pte);
+ if (((pgstev & _PGSTE_GPS_USAGE_MASK) == _PGSTE_GPS_USAGE_UNUSED) ||
+ ((pgstev & _PGSTE_GPS_ZERO) && (ptev & _PAGE_INVALID))) {
+ gmap_zap_swap_entry(pte_to_swp_entry(pte), mm);
+ pte_clear(mm, address, ptep);
+ }
+ pgste_set_unlock(ptep, pgste);
+out_pte:
+ pte_unmap_unlock(*ptep, ptl);
+}
+
+/*
+ * this function is assumed to be called with mmap_sem held
+ */
+void __gmap_zap(unsigned long address, struct gmap *gmap)
+{
+ unsigned long *table, *segment_ptr;
+ unsigned long segment, pgstev, ptev;
+ struct gmap_pgtable *mp;
+ struct page *page;
+
+ segment_ptr = gmap_table_walk(address, gmap);
+ if (IS_ERR(segment_ptr))
+ return;
+ segment = *segment_ptr;
+ if (segment & _SEGMENT_ENTRY_INVALID)
+ return;
+ page = pfn_to_page(segment >> PAGE_SHIFT);
+ mp = (struct gmap_pgtable *) page->index;
+ address = mp->vmaddr | (address & ~PMD_MASK);
+ /* Page table is present */
+ table = (unsigned long *)(segment & _SEGMENT_ENTRY_ORIGIN);
+ table = table + ((address >> 12) & 0xff);
+ pgstev = table[PTRS_PER_PTE];
+ ptev = table[0];
+ /* quick check, checked again with locks held */
+ if (((pgstev & _PGSTE_GPS_USAGE_MASK) == _PGSTE_GPS_USAGE_UNUSED) ||
+ ((pgstev & _PGSTE_GPS_ZERO) && (ptev & _PAGE_INVALID)))
+ gmap_zap_unused(gmap->mm, address);
+}
+EXPORT_SYMBOL_GPL(__gmap_zap);
+
void gmap_discard(unsigned long from, unsigned long to, struct gmap *gmap)
{
@@ -671,7 +748,7 @@
/**
* gmap_ipte_notify - mark a range of ptes for invalidation notification
* @gmap: pointer to guest mapping meta data structure
- * @address: virtual address in the guest address space
+ * @start: virtual address in the guest address space
* @len: size of area
*
* Returns 0 if for each page in the given range a gmap mapping exists and
@@ -725,13 +802,12 @@
/**
* gmap_do_ipte_notify - call all invalidation callbacks for a specific pte.
* @mm: pointer to the process mm_struct
- * @addr: virtual address in the process address space
* @pte: pointer to the page table entry
*
* This function is assumed to be called with the page table lock held
* for the pte to notify.
*/
-void gmap_do_ipte_notify(struct mm_struct *mm, unsigned long addr, pte_t *pte)
+void gmap_do_ipte_notify(struct mm_struct *mm, pte_t *pte)
{
unsigned long segment_offset;
struct gmap_notifier *nb;
@@ -802,6 +878,78 @@
__free_page(page);
}
+static inline unsigned long page_table_reset_pte(struct mm_struct *mm,
+ pmd_t *pmd, unsigned long addr, unsigned long end)
+{
+ pte_t *start_pte, *pte;
+ spinlock_t *ptl;
+ pgste_t pgste;
+
+ start_pte = pte_offset_map_lock(mm, pmd, addr, &ptl);
+ pte = start_pte;
+ do {
+ pgste = pgste_get_lock(pte);
+ pgste_val(pgste) &= ~_PGSTE_GPS_USAGE_MASK;
+ pgste_set_unlock(pte, pgste);
+ } while (pte++, addr += PAGE_SIZE, addr != end);
+ pte_unmap_unlock(start_pte, ptl);
+
+ return addr;
+}
+
+static inline unsigned long page_table_reset_pmd(struct mm_struct *mm,
+ pud_t *pud, unsigned long addr, unsigned long end)
+{
+ unsigned long next;
+ pmd_t *pmd;
+
+ pmd = pmd_offset(pud, addr);
+ do {
+ next = pmd_addr_end(addr, end);
+ if (pmd_none_or_clear_bad(pmd))
+ continue;
+ next = page_table_reset_pte(mm, pmd, addr, next);
+ } while (pmd++, addr = next, addr != end);
+
+ return addr;
+}
+
+static inline unsigned long page_table_reset_pud(struct mm_struct *mm,
+ pgd_t *pgd, unsigned long addr, unsigned long end)
+{
+ unsigned long next;
+ pud_t *pud;
+
+ pud = pud_offset(pgd, addr);
+ do {
+ next = pud_addr_end(addr, end);
+ if (pud_none_or_clear_bad(pud))
+ continue;
+ next = page_table_reset_pmd(mm, pud, addr, next);
+ } while (pud++, addr = next, addr != end);
+
+ return addr;
+}
+
+void page_table_reset_pgste(struct mm_struct *mm,
+ unsigned long start, unsigned long end)
+{
+ unsigned long addr, next;
+ pgd_t *pgd;
+
+ addr = start;
+ down_read(&mm->mmap_sem);
+ pgd = pgd_offset(mm, addr);
+ do {
+ next = pgd_addr_end(addr, end);
+ if (pgd_none_or_clear_bad(pgd))
+ continue;
+ next = page_table_reset_pud(mm, pgd, addr, next);
+ } while (pgd++, addr = next, addr != end);
+ up_read(&mm->mmap_sem);
+}
+EXPORT_SYMBOL(page_table_reset_pgste);
+
int set_guest_storage_key(struct mm_struct *mm, unsigned long addr,
unsigned long key, bool nq)
{
@@ -1248,7 +1396,7 @@
{
struct list_head *lh = (struct list_head *) pgtable;
- assert_spin_locked(&mm->page_table_lock);
+ assert_spin_locked(pmd_lockptr(mm, pmdp));
/* FIFO */
if (!pmd_huge_pte(mm, pmdp))
@@ -1264,7 +1412,7 @@
pgtable_t pgtable;
pte_t *ptep;
- assert_spin_locked(&mm->page_table_lock);
+ assert_spin_locked(pmd_lockptr(mm, pmdp));
/* FIFO */
pgtable = pmd_huge_pte(mm, pmdp);
diff --git a/arch/s390/pci/pci_debug.c b/arch/s390/pci/pci_debug.c
index 75c69b4..c5c6684 100644
--- a/arch/s390/pci/pci_debug.c
+++ b/arch/s390/pci/pci_debug.c
@@ -139,7 +139,7 @@
int __init zpci_debug_init(void)
{
/* event trace buffer */
- pci_debug_msg_id = debug_register("pci_msg", 16, 1, 16 * sizeof(long));
+ pci_debug_msg_id = debug_register("pci_msg", 8, 1, 8 * sizeof(long));
if (!pci_debug_msg_id)
return -EINVAL;
debug_register_view(pci_debug_msg_id, &debug_sprintf_view);
diff --git a/drivers/s390/char/con3215.c b/drivers/s390/char/con3215.c
index eb5d227..5af7f0b 100644
--- a/drivers/s390/char/con3215.c
+++ b/drivers/s390/char/con3215.c
@@ -922,7 +922,7 @@
raw3215_freelist = req;
}
- cdev = ccw_device_probe_console();
+ cdev = ccw_device_create_console(&raw3215_ccw_driver);
if (IS_ERR(cdev))
return -ENODEV;
@@ -932,6 +932,12 @@
cdev->handler = raw3215_irq;
raw->flags |= RAW3215_FIXED;
+ if (ccw_device_enable_console(cdev)) {
+ ccw_device_destroy_console(cdev);
+ raw3215_free_info(raw);
+ raw3215[0] = NULL;
+ return -ENODEV;
+ }
/* Request the console irq */
if (raw3215_startup(raw) != 0) {
diff --git a/drivers/s390/char/con3270.c b/drivers/s390/char/con3270.c
index 699fd3e..75ffe99 100644
--- a/drivers/s390/char/con3270.c
+++ b/drivers/s390/char/con3270.c
@@ -7,6 +7,7 @@
* Copyright IBM Corp. 2003, 2009
*/
+#include <linux/module.h>
#include <linux/console.h>
#include <linux/init.h>
#include <linux/interrupt.h>
@@ -30,6 +31,9 @@
static struct raw3270_fn con3270_fn;
+static bool auto_update = 1;
+module_param(auto_update, bool, 0);
+
/*
* Main 3270 console view data structure.
*/
@@ -204,6 +208,8 @@
struct string *s, *n;
int rc;
+ if (!auto_update && !raw3270_view_active(&cp->view))
+ return;
if (cp->view.dev)
raw3270_activate_view(&cp->view);
@@ -529,6 +535,7 @@
if (!cp->view.dev)
return;
raw3270_pm_unfreeze(&cp->view);
+ raw3270_activate_view(&cp->view);
spin_lock_irqsave(&cp->view.lock, flags);
con3270_wait_write(cp);
cp->nr_up = 0;
@@ -576,7 +583,6 @@
static int __init
con3270_init(void)
{
- struct ccw_device *cdev;
struct raw3270 *rp;
void *cbuf;
int i;
@@ -591,10 +597,7 @@
cpcmd("TERM AUTOCR OFF", NULL, 0, NULL);
}
- cdev = ccw_device_probe_console();
- if (IS_ERR(cdev))
- return -ENODEV;
- rp = raw3270_setup_console(cdev);
+ rp = raw3270_setup_console();
if (IS_ERR(rp))
return PTR_ERR(rp);
diff --git a/drivers/s390/char/raw3270.c b/drivers/s390/char/raw3270.c
index 2cdec21..9f849df 100644
--- a/drivers/s390/char/raw3270.c
+++ b/drivers/s390/char/raw3270.c
@@ -276,6 +276,15 @@
}
int
+raw3270_view_active(struct raw3270_view *view)
+{
+ struct raw3270 *rp = view->dev;
+
+ return rp && rp->view == view &&
+ !test_bit(RAW3270_FLAGS_FROZEN, &rp->flags);
+}
+
+int
raw3270_start(struct raw3270_view *view, struct raw3270_request *rq)
{
unsigned long flags;
@@ -776,22 +785,37 @@
}
#ifdef CONFIG_TN3270_CONSOLE
+/* Tentative definition - see below for actual definition. */
+static struct ccw_driver raw3270_ccw_driver;
+
/*
* Setup 3270 device configured as console.
*/
-struct raw3270 __init *raw3270_setup_console(struct ccw_device *cdev)
+struct raw3270 __init *raw3270_setup_console(void)
{
+ struct ccw_device *cdev;
unsigned long flags;
struct raw3270 *rp;
char *ascebc;
int rc;
+ cdev = ccw_device_create_console(&raw3270_ccw_driver);
+ if (IS_ERR(cdev))
+ return ERR_CAST(cdev);
+
rp = kzalloc(sizeof(struct raw3270), GFP_KERNEL | GFP_DMA);
ascebc = kzalloc(256, GFP_KERNEL);
rc = raw3270_setup_device(cdev, rp, ascebc);
if (rc)
return ERR_PTR(rc);
set_bit(RAW3270_FLAGS_CONSOLE, &rp->flags);
+
+ rc = ccw_device_enable_console(cdev);
+ if (rc) {
+ ccw_device_destroy_console(cdev);
+ return ERR_PTR(rc);
+ }
+
spin_lock_irqsave(get_ccwdev_lock(rp->cdev), flags);
do {
__raw3270_reset_device(rp);
diff --git a/drivers/s390/char/raw3270.h b/drivers/s390/char/raw3270.h
index 7b73ff8..e1e41c2 100644
--- a/drivers/s390/char/raw3270.h
+++ b/drivers/s390/char/raw3270.h
@@ -173,6 +173,7 @@
int raw3270_start_irq(struct raw3270_view *, struct raw3270_request *);
int raw3270_reset(struct raw3270_view *);
struct raw3270_view *raw3270_view(struct raw3270_view *);
+int raw3270_view_active(struct raw3270_view *);
/* Reference count inliner for view structures. */
static inline void
@@ -190,7 +191,7 @@
wake_up(&raw3270_wait_queue);
}
-struct raw3270 *raw3270_setup_console(struct ccw_device *cdev);
+struct raw3270 *raw3270_setup_console(void);
void raw3270_wait_cons_dev(struct raw3270 *);
/* Notifier for device addition/removal */
diff --git a/drivers/s390/char/sclp_early.c b/drivers/s390/char/sclp_early.c
index 82f2c38..14196ea 100644
--- a/drivers/s390/char/sclp_early.c
+++ b/drivers/s390/char/sclp_early.c
@@ -20,7 +20,9 @@
struct sccb_header header; /* 0-7 */
u16 rnmax; /* 8-9 */
u8 rnsize; /* 10 */
- u8 _reserved0[24 - 11]; /* 11-15 */
+ u8 _reserved0[16 - 11]; /* 11-15 */
+ u16 ncpurl; /* 16-17 */
+ u8 _reserved7[24 - 18]; /* 18-23 */
u8 loadparm[8]; /* 24-31 */
u8 _reserved1[48 - 32]; /* 32-47 */
u64 facilities; /* 48-55 */
@@ -32,13 +34,16 @@
u8 _reserved4[100 - 92]; /* 92-99 */
u32 rnsize2; /* 100-103 */
u64 rnmax2; /* 104-111 */
- u8 _reserved5[4096 - 112]; /* 112-4095 */
+ u8 _reserved5[120 - 112]; /* 112-119 */
+ u16 hcpua; /* 120-121 */
+ u8 _reserved6[4096 - 122]; /* 122-4095 */
} __packed __aligned(PAGE_SIZE);
static char sccb_early[PAGE_SIZE] __aligned(PAGE_SIZE) __initdata;
static unsigned int sclp_con_has_vt220 __initdata;
static unsigned int sclp_con_has_linemode __initdata;
static unsigned long sclp_hsa_size;
+static unsigned int sclp_max_cpu;
static struct sclp_ipl_info sclp_ipl_info;
u64 sclp_facilities;
@@ -102,6 +107,15 @@
sclp_rzm = sccb->rnsize ? sccb->rnsize : sccb->rnsize2;
sclp_rzm <<= 20;
+ if (!sccb->hcpua) {
+ if (MACHINE_IS_VM)
+ sclp_max_cpu = 64;
+ else
+ sclp_max_cpu = sccb->ncpurl;
+ } else {
+ sclp_max_cpu = sccb->hcpua + 1;
+ }
+
/* Save IPL information */
sclp_ipl_info.is_valid = 1;
if (sccb->flags & 0x2)
@@ -129,6 +143,11 @@
return sclp_rzm;
}
+unsigned int sclp_get_max_cpu(void)
+{
+ return sclp_max_cpu;
+}
+
/*
* This function will be called after sclp_facilities_detect(), which gets
* called from early.c code. The sclp_facilities_detect() function retrieves
@@ -184,9 +203,9 @@
sccb_init_eq_size(sccb);
if (sclp_cmd_early(SCLP_CMDW_WRITE_EVENT_DATA, sccb))
return -EIO;
- if (sccb->evbuf.blk_cnt != 0)
- return (sccb->evbuf.blk_cnt - 1) * PAGE_SIZE;
- return 0;
+ if (sccb->evbuf.blk_cnt == 0)
+ return 0;
+ return (sccb->evbuf.blk_cnt - 1) * PAGE_SIZE;
}
static long __init sclp_hsa_copy_wait(struct sccb_header *sccb)
@@ -195,6 +214,8 @@
sccb->length = PAGE_SIZE;
if (sclp_cmd_early(SCLP_CMDW_READ_EVENT_DATA, sccb))
return -EIO;
+ if (((struct sdias_sccb *) sccb)->evbuf.blk_cnt == 0)
+ return 0;
return (((struct sdias_sccb *) sccb)->evbuf.blk_cnt - 1) * PAGE_SIZE;
}
diff --git a/drivers/s390/cio/airq.c b/drivers/s390/cio/airq.c
index f055df0..445564c 100644
--- a/drivers/s390/cio/airq.c
+++ b/drivers/s390/cio/airq.c
@@ -186,55 +186,71 @@
EXPORT_SYMBOL(airq_iv_release);
/**
- * airq_iv_alloc_bit - allocate an irq bit from an interrupt vector
+ * airq_iv_alloc - allocate irq bits from an interrupt vector
* @iv: pointer to an interrupt vector structure
+ * @num: number of consecutive irq bits to allocate
*
- * Returns the bit number of the allocated irq, or -1UL if no bit
- * is available or the AIRQ_IV_ALLOC flag has not been specified
+ * Returns the bit number of the first irq in the allocated block of irqs,
+ * or -1UL if no bit is available or the AIRQ_IV_ALLOC flag has not been
+ * specified
*/
-unsigned long airq_iv_alloc_bit(struct airq_iv *iv)
+unsigned long airq_iv_alloc(struct airq_iv *iv, unsigned long num)
{
- unsigned long bit;
+ unsigned long bit, i;
- if (!iv->avail)
+ if (!iv->avail || num == 0)
return -1UL;
spin_lock(&iv->lock);
bit = find_first_bit_inv(iv->avail, iv->bits);
- if (bit < iv->bits) {
- clear_bit_inv(bit, iv->avail);
- if (bit >= iv->end)
- iv->end = bit + 1;
- } else
+ while (bit + num <= iv->bits) {
+ for (i = 1; i < num; i++)
+ if (!test_bit_inv(bit + i, iv->avail))
+ break;
+ if (i >= num) {
+ /* Found a suitable block of irqs */
+ for (i = 0; i < num; i++)
+ clear_bit_inv(bit + i, iv->avail);
+ if (bit + num >= iv->end)
+ iv->end = bit + num + 1;
+ break;
+ }
+ bit = find_next_bit_inv(iv->avail, iv->bits, bit + i + 1);
+ }
+ if (bit + num > iv->bits)
bit = -1UL;
spin_unlock(&iv->lock);
return bit;
}
-EXPORT_SYMBOL(airq_iv_alloc_bit);
+EXPORT_SYMBOL(airq_iv_alloc);
/**
- * airq_iv_free_bit - free an irq bit of an interrupt vector
+ * airq_iv_free - free irq bits of an interrupt vector
* @iv: pointer to interrupt vector structure
- * @bit: number of the irq bit to free
+ * @bit: number of the first irq bit to free
+ * @num: number of consecutive irq bits to free
*/
-void airq_iv_free_bit(struct airq_iv *iv, unsigned long bit)
+void airq_iv_free(struct airq_iv *iv, unsigned long bit, unsigned long num)
{
- if (!iv->avail)
+ unsigned long i;
+
+ if (!iv->avail || num == 0)
return;
spin_lock(&iv->lock);
- /* Clear (possibly left over) interrupt bit */
- clear_bit_inv(bit, iv->vector);
- /* Make the bit position available again */
- set_bit_inv(bit, iv->avail);
- if (bit == iv->end - 1) {
+ for (i = 0; i < num; i++) {
+ /* Clear (possibly left over) interrupt bit */
+ clear_bit_inv(bit + i, iv->vector);
+ /* Make the bit positions available again */
+ set_bit_inv(bit + i, iv->avail);
+ }
+ if (bit + num >= iv->end) {
/* Find new end of bit-field */
- while (--iv->end > 0)
- if (!test_bit_inv(iv->end - 1, iv->avail))
- break;
+ while (iv->end > 0 && !test_bit_inv(iv->end - 1, iv->avail))
+ iv->end--;
}
spin_unlock(&iv->lock);
}
-EXPORT_SYMBOL(airq_iv_free_bit);
+EXPORT_SYMBOL(airq_iv_free);
/**
* airq_iv_scan - scan interrupt vector for non-zero bits
diff --git a/drivers/s390/cio/chsc_sch.c b/drivers/s390/cio/chsc_sch.c
index 7b29d0b..1d3661a 100644
--- a/drivers/s390/cio/chsc_sch.c
+++ b/drivers/s390/cio/chsc_sch.c
@@ -173,8 +173,7 @@
static int __init chsc_init_dbfs(void)
{
- chsc_debug_msg_id = debug_register("chsc_msg", 16, 1,
- 16 * sizeof(long));
+ chsc_debug_msg_id = debug_register("chsc_msg", 8, 1, 4 * sizeof(long));
if (!chsc_debug_msg_id)
goto out;
debug_register_view(chsc_debug_msg_id, &debug_sprintf_view);
diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c
index 8ee88c4..97c48b3 100644
--- a/drivers/s390/cio/cio.c
+++ b/drivers/s390/cio/cio.c
@@ -54,7 +54,7 @@
*/
static int __init cio_debug_init(void)
{
- cio_debug_msg_id = debug_register("cio_msg", 16, 1, 16 * sizeof(long));
+ cio_debug_msg_id = debug_register("cio_msg", 16, 1, 11 * sizeof(long));
if (!cio_debug_msg_id)
goto out_unregister;
debug_register_view(cio_debug_msg_id, &debug_sprintf_view);
@@ -64,7 +64,7 @@
goto out_unregister;
debug_register_view(cio_debug_trace_id, &debug_hex_ascii_view);
debug_set_level(cio_debug_trace_id, 2);
- cio_debug_crw_id = debug_register("cio_crw", 16, 1, 16 * sizeof(long));
+ cio_debug_crw_id = debug_register("cio_crw", 8, 1, 8 * sizeof(long));
if (!cio_debug_crw_id)
goto out_unregister;
debug_register_view(cio_debug_crw_id, &debug_sprintf_view);
diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c
index e9d7835..d8d9b5b 100644
--- a/drivers/s390/cio/device.c
+++ b/drivers/s390/cio/device.c
@@ -1571,12 +1571,27 @@
return rc;
}
-#ifdef CONFIG_CCW_CONSOLE
-static int ccw_device_console_enable(struct ccw_device *cdev,
- struct subchannel *sch)
+static void ccw_device_set_int_class(struct ccw_device *cdev)
{
+ struct ccw_driver *cdrv = cdev->drv;
+
+ /* Note: we interpret class 0 in this context as an uninitialized
+ * field since it translates to a non-I/O interrupt class. */
+ if (cdrv->int_class != 0)
+ cdev->private->int_class = cdrv->int_class;
+ else
+ cdev->private->int_class = IRQIO_CIO;
+}
+
+#ifdef CONFIG_CCW_CONSOLE
+int __init ccw_device_enable_console(struct ccw_device *cdev)
+{
+ struct subchannel *sch = to_subchannel(cdev->dev.parent);
int rc;
+ if (!cdev->drv || !cdev->handler)
+ return -EINVAL;
+
io_subchannel_init_fields(sch);
rc = cio_commit_config(sch);
if (rc)
@@ -1609,12 +1624,11 @@
return rc;
}
-struct ccw_device *ccw_device_probe_console(void)
+struct ccw_device * __init ccw_device_create_console(struct ccw_driver *drv)
{
struct io_subchannel_private *io_priv;
struct ccw_device *cdev;
struct subchannel *sch;
- int ret;
sch = cio_probe_console();
if (IS_ERR(sch))
@@ -1631,18 +1645,23 @@
kfree(io_priv);
return cdev;
}
+ cdev->drv = drv;
set_io_private(sch, io_priv);
- ret = ccw_device_console_enable(cdev, sch);
- if (ret) {
- set_io_private(sch, NULL);
- put_device(&sch->dev);
- put_device(&cdev->dev);
- kfree(io_priv);
- return ERR_PTR(ret);
- }
+ ccw_device_set_int_class(cdev);
return cdev;
}
+void __init ccw_device_destroy_console(struct ccw_device *cdev)
+{
+ struct subchannel *sch = to_subchannel(cdev->dev.parent);
+ struct io_subchannel_private *io_priv = to_io_private(sch);
+
+ set_io_private(sch, NULL);
+ put_device(&sch->dev);
+ put_device(&cdev->dev);
+ kfree(io_priv);
+}
+
/**
* ccw_device_wait_idle() - busy wait for device to become idle
* @cdev: ccw device
@@ -1726,15 +1745,8 @@
int ret;
cdev->drv = cdrv; /* to let the driver call _set_online */
- /* Note: we interpret class 0 in this context as an uninitialized
- * field since it translates to a non-I/O interrupt class. */
- if (cdrv->int_class != 0)
- cdev->private->int_class = cdrv->int_class;
- else
- cdev->private->int_class = IRQIO_CIO;
-
+ ccw_device_set_int_class(cdev);
ret = cdrv->probe ? cdrv->probe(cdev) : -ENODEV;
-
if (ret) {
cdev->drv = NULL;
cdev->private->int_class = IRQIO_CIO;
diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c
index 795ed61..a0aff2e 100644
--- a/drivers/s390/net/qeth_core_main.c
+++ b/drivers/s390/net/qeth_core_main.c
@@ -33,8 +33,8 @@
/* N P A M L V H */
[QETH_DBF_SETUP] = {"qeth_setup",
8, 1, 8, 5, &debug_hex_ascii_view, NULL},
- [QETH_DBF_MSG] = {"qeth_msg",
- 8, 1, 128, 3, &debug_sprintf_view, NULL},
+ [QETH_DBF_MSG] = {"qeth_msg", 8, 1, 11 * sizeof(long), 3,
+ &debug_sprintf_view, NULL},
[QETH_DBF_CTRL] = {"qeth_control",
8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
};
diff --git a/include/asm-generic/pgtable.h b/include/asm-generic/pgtable.h
index 34c7bdc..1ec08c1 100644
--- a/include/asm-generic/pgtable.h
+++ b/include/asm-generic/pgtable.h
@@ -193,6 +193,19 @@
}
#endif
+#ifndef __HAVE_ARCH_PTE_UNUSED
+/*
+ * Some architectures provide facilities to virtualization guests
+ * so that they can flag allocated pages as unused. This allows the
+ * host to transparently reclaim unused pages. This function returns
+ * whether the pte's page is unused.
+ */
+static inline int pte_unused(pte_t pte)
+{
+ return 0;
+}
+#endif
+
#ifndef __HAVE_ARCH_PMD_SAME
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
static inline int pmd_same(pmd_t pmd_a, pmd_t pmd_b)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index c1b7414..a0df429 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1487,9 +1487,15 @@
#if USE_SPLIT_PMD_PTLOCKS
+static struct page *pmd_to_page(pmd_t *pmd)
+{
+ unsigned long mask = ~(PTRS_PER_PMD * sizeof(pmd_t) - 1);
+ return virt_to_page((void *)((unsigned long) pmd & mask));
+}
+
static inline spinlock_t *pmd_lockptr(struct mm_struct *mm, pmd_t *pmd)
{
- return ptlock_ptr(virt_to_page(pmd));
+ return ptlock_ptr(pmd_to_page(pmd));
}
static inline bool pgtable_pmd_page_ctor(struct page *page)
@@ -1508,7 +1514,7 @@
ptlock_free(page);
}
-#define pmd_huge_pte(mm, pmd) (virt_to_page(pmd)->pmd_huge_pte)
+#define pmd_huge_pte(mm, pmd) (pmd_to_page(pmd)->pmd_huge_pte)
#else
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index ae365aa..a47902c 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -4721,8 +4721,10 @@
BUG_ON(cpu_online(smp_processor_id()));
- if (mm != &init_mm)
+ if (mm != &init_mm) {
switch_mm(mm, &init_mm, current);
+ finish_arch_post_lock_switch();
+ }
mmdrop(mm);
}
diff --git a/mm/mmu_context.c b/mm/mmu_context.c
index 8a8cd02..f802c2d 100644
--- a/mm/mmu_context.c
+++ b/mm/mmu_context.c
@@ -31,6 +31,9 @@
tsk->mm = mm;
switch_mm(active_mm, mm, tsk);
task_unlock(tsk);
+#ifdef finish_arch_post_lock_switch
+ finish_arch_post_lock_switch();
+#endif
if (active_mm != mm)
mmdrop(active_mm);
diff --git a/mm/rmap.c b/mm/rmap.c
index 8fc049f..11cf322 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -1165,6 +1165,16 @@
}
set_pte_at(mm, address, pte,
swp_entry_to_pte(make_hwpoison_entry(page)));
+ } else if (pte_unused(pteval)) {
+ /*
+ * The guest indicated that the page content is of no
+ * interest anymore. Simply discard the pte, vmscan
+ * will take care of the rest.
+ */
+ if (PageAnon(page))
+ dec_mm_counter(mm, MM_ANONPAGES);
+ else
+ dec_mm_counter(mm, MM_FILEPAGES);
} else if (PageAnon(page)) {
swp_entry_t entry = { .val = page_private(page) };
pte_t swp_pte;