On Wed, Feb 22, 2017 at 01:53:54AM +0100, Rafael J. Wysocki wrote:

[+ Boris]

On Tuesday, February 21, 2017 04:45:23 PM Tyler Baicar wrote:

quoted

From: "Jonathan (Zhixiong) Zhang" <redacted>

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.

Signed-off-by: Jonathan (Zhixiong) Zhang <redacted>
Signed-off-by: Tyler Baicar <redacted>
---
 arch/arm64/Kconfig        | 1 +
 drivers/acpi/apei/Kconfig | 1 +
 2 files changed, 2 insertions(+)

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 1117421..61e0bb0 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig

@@ -15,6 +15,7 @@ config ARM64
 	select ARCH_HAS_SG_CHAIN
 	select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
 	select ARCH_USE_CMPXCHG_LOCKREF
+	select ARCH_SUPPORTS_MEMORY_FAILURE
 	select ARCH_SUPPORTS_ATOMIC_RMW
 	select ARCH_SUPPORTS_NUMA_BALANCING
 	select ARCH_WANT_COMPAT_IPC_PARSE_VERSION

diff --git a/drivers/acpi/apei/Kconfig b/drivers/acpi/apei/Kconfig
index b0140c8..6d9a812 100644
--- a/drivers/acpi/apei/Kconfig
+++ b/drivers/acpi/apei/Kconfig

@@ -9,6 +9,7 @@ config ACPI_APEI
 	select MISC_FILESYSTEMS
 	select PSTORE
 	select UEFI_CPER
+	select ACPI_APEI_MEMORY_FAILURE if MEMORY_FAILURE

Yap, looks ok to me: we're basically enabling
ghes_handle_memory_failure() to queue a memory address at fault for
possibly offlining on arm64. And since the arch supports it...

-- 
Regards/Gruss,
    Boris.

SUSE Linux GmbH, GF: Felix Imend?rffer, Jane Smithard, Graham Norton, HRB 21284 (AG N?rnberg)
--