[PATCH] arm64: kconfig: allow support for memory failure handling

"Baicar, Tyler" [off-list ref] writes:

Hello Punit,


On 2/3/2017 9:27 AM, Punit Agrawal wrote:

quoted

Tyler Baicar [off-list ref] writes:

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 | 2 ++
  1 file changed, 2 insertions(+)

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

Although enabling support for memory failure handling makes sense in the
architecture config, it feels out of place to select
ACPI_APEI_MEMORY_FAILURE here.

Maybe key it off of CONFIG_APEI?

Yes, I can move it there.

config ACPI_APEI
        bool "ACPI Platform Error Interface (APEI)"
        select MISC_FILESYSTEMS
        select PSTORE
        select UEFI_CPER
+        select ACPI_APEI_MEMORY_FAILURE if MEMORY_FAILURE
        depends on HAVE_ACPI_APEI

That's what I was suggesting - we'll see what the ACPI maintainers think
of the change.

The ARCH_SUPPORTS_MEMORY_FAILURE should remain in arch/arm64/Kconfig
though, correct?

Yes, that's right - as that's a feature the architecture is advertising
support for, it should stay in the arm64 Kconfig,

Thanks,
Tyler