MIPS: Octeon: Select CONFIG_HOLES_IN_ZONE
Current Octeon systems do in fact have holes in their memory zones.
We need to select HOLES_IN_ZONE. If we do not, some memory
configurations will result in crashes at boot time like this:
.
.
.
CPU 6 Unable to handle kernel paging request at virtual address 0000000000700000, epc == ffffffff8118fe00, ra == ffffffff8118fe9c
Oops[#1]:
Cpu 6
.
.
.
...
Call Trace:
[<ffffffff8118fe00>] setup_per_zone_wmarks+0x1b0/0x338
[<ffffffff815cd738>] init_per_zone_wmark_min+0x64/0xd0
[<ffffffff81100438>] do_one_initcall+0x38/0x160
.
.
.
Reported-by: Jason Kwon <jason.kwon@ericsson.com>
Signed-off-by: David Daney <david.daney@cavium.com>
To: linux-mips@linux-mips.org
Cc: Jason Kwon <jason.kwon@ericsson.com>
Patchwork: https://patchwork.linux-mips.org/patch/2724/
Tested-by: Guenter Roeck<guenter.roeck@ericsson.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index d300c2b..b122adc 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -723,6 +723,7 @@
select SYS_SUPPORTS_HIGHMEM
select SYS_SUPPORTS_HOTPLUG_CPU
select SYS_HAS_CPU_CAVIUM_OCTEON
+ select HOLES_IN_ZONE
help
The Octeon simulator is software performance model of the Cavium
Octeon Processor. It supports simulating Octeon processors on x86
@@ -745,6 +746,7 @@
select ZONE_DMA32
select USB_ARCH_HAS_OHCI
select USB_ARCH_HAS_EHCI
+ select HOLES_IN_ZONE
help
This option supports all of the Octeon reference boards from Cavium
Networks. It builds a kernel that dynamically determines the Octeon
@@ -974,6 +976,9 @@
config GENERIC_GPIO
bool
+config HOLES_IN_ZONE
+ bool
+
#
# Endianess selection. Sufficiently obscure so many users don't know what to
# answer,so we try hard to limit the available choices. Also the use of a