Re: [PATCH V17 00/11] Add UEFI 2.6 and ACPI 6.1 updates for RAS on ARM64

Will Deacon
2017-06-07T11:50:08Z

On Fri, May 19, 2017 at 02:32:02PM -0600, Tyler Baicar wrote:
> When a memory error, CPU error, PCIe error, or other type of hardware error
> that's covered by RAS occurs, firmware should populate the shared GHES memory
> location with the proper GHES structures to notify the OS of the error.
> For example, platforms that implement firmware first handling may implement
> separate GHES sources for corrected errors and uncorrected errors. If the
> error is an uncorrectable error, then the firmware will notify the OS
> immediately since the error needs to be handled ASAP. The OS will then be able
> to take the appropriate action needed such as offlining a page. If the error
> is a corrected error, then the firmware will not interrupt the OS immediately.
> Instead, the OS will see and report the error the next time it's GHES timer
> expires. The kernel will first parse the GHES structures and report the errors
> through the kernel logs and then notify the user space through RAS trace
> events. This allows user space applications such as RAS Daemon to see the
> errors and report them however the user desires. This patchset extends the
> kernel functionality for RAS errors based on updates in the UEFI 2.6 and
> ACPI 6.1 specifications.

Thanks, I've pushed this out as:

git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-next/ras-apei

which I'll merge into for-next/core (and therefore linux-next) either the
end of this week or the beginning of next week. Please take a look if you
get a chance.

Will