On 3/23/2017 10:12 AM, Punit Agrawal wrote:
On 23/03/17 14:33, James Morse wrote:
Hi Punit,
On 01/02/17 21:38, Tyler Baicar wrote:
From: "Jonathan (Zhixiong) Zhang" <[email protected]>
If ACPI_APEI and MEMORY_FAILURE is configured, select
ACPI_APEI_MEMORY_FAILURE. This enables memory failure recovery
when such memory failure is reported through ACPI APEI. APEI
(ACPI Platform Error Interfaces) provides a means for the
platform to convey error information to the kernel.
Declare ARCH_SUPPORTS_MEMORY_FAILURE, as arm64 does support
memory failure recovery attempt.
Am I right in thinking we should wait for the hugepage issue you
found with
hwpoison [0] to be fixed before arm64 can have
ARCH_SUPPORTS_MEMORY_FAILURE?
We should at the least fix the huge_pte_offset() issue discovered in [0]
before we enable memory failure handling. Earlier today I posted a
RFC[1] fix for it based on Catalin's suggestion.
(If so, can this patch become part of that series to they are
obviously related!)
Good point - I can include the patches enabling memory failure handling
on ARM64 if Tyler's fine with it.
That's fine with me!
Thanks,
Tyler
Thanks,
Punit
[1] https://lkml.org/lkml/2017/3/23/293
Thanks,
James
[0] https://www.spinics.net/lists/arm-kernel/msg568995.html
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index f92778d..4cd12a0 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -15,6 +15,8 @@ config ARM64
select ARCH_HAS_SG_CHAIN
select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
select ARCH_USE_CMPXCHG_LOCKREF
+ select ACPI_APEI_MEMORY_FAILURE if ACPI_APEI && MEMORY_FAILURE
+ select ARCH_SUPPORTS_MEMORY_FAILURE
select ARCH_SUPPORTS_ATOMIC_RMW
select ARCH_SUPPORTS_NUMA_BALANCING
select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
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