[PATCH V2] arm64: kconfig: allow support for memory failure handling

[PATCH V2] arm64: kconfig: allow support for memory failure handling

[Tyler Baicar]

From: "Jonathan (Zhixiong) Zhang" <zjzhang@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.

Signed-off-by: Jonathan (Zhixiong) Zhang <zjzhang@codeaurora.org>
Signed-off-by: Tyler Baicar <tbaicar@codeaurora.org>
---
 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
 	depends on HAVE_ACPI_APEI
 	help
 	  APEI allows to report errors (for example from the chipset)
-- 
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Qualcomm Technologies, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project.

[PATCH V2] arm64: kconfig: allow support for memory failure handling

[Rafael J. Wysocki]

[+ Boris]

On Tuesday, February 21, 2017 04:45:23 PM Tyler Baicar wrote:
> From: "Jonathan (Zhixiong) Zhang" <zjzhang@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.
> 
> Signed-off-by: Jonathan (Zhixiong) Zhang <zjzhang@codeaurora.org>
> Signed-off-by: Tyler Baicar <tbaicar@codeaurora.org>
> ---
>  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
>  	depends on HAVE_ACPI_APEI
>  	help
>  	  APEI allows to report errors (for example from the chipset)
> 

[PATCH V2] arm64: kconfig: allow support for memory failure handling

[Borislav Petkov]

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:
> > From: "Jonathan (Zhixiong) Zhang" <zjzhang@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.
> > 
> > Signed-off-by: Jonathan (Zhixiong) Zhang <zjzhang@codeaurora.org>
> > Signed-off-by: Tyler Baicar <tbaicar@codeaurora.org>
> > ---
> >  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)
--