[PATCH] arm64: kconfig: allow support for memory failure handling
tbaicar at codeaurora.org
Fri Mar 24 09:36:16 PDT 2017
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" <zjzhang at codeaurora.org>
>>> 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  to be fixed before arm64 can have
> We should at the least fix the huge_pte_offset() issue discovered in 
> before we enable memory failure handling. Earlier today I posted a
> RFC 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!
>  https://lkml.org/lkml/2017/3/23/293
>>  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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