linux-kernel - Re: [PATCH V12 00/10] Add UEFI 2.6 and ACPI 6.1 updates for RAS on ARM64

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Message-ID: <0908a4cc-bb6b-341b-0bde-ccb820d17385@codeaurora.org>
Date:   Tue, 7 Mar 2017 09:37:38 -0700
From:   "Baicar, Tyler" <tbaicar@...eaurora.org>
To:     James Morse <james.morse@....com>
Cc:     christoffer.dall@...aro.org, marc.zyngier@....com,
        pbonzini@...hat.com, rkrcmar@...hat.com, linux@...linux.org.uk,
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        paul.gortmaker@...driver.com, tn@...ihalf.com, fu.wei@...aro.org,
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        linux-arm-kernel@...ts.infradead.org, kvmarm@...ts.cs.columbia.edu,
        kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
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        astone@...hat.com, harba@...eaurora.org, hanjun.guo@...aro.org,
        john.garry@...wei.com, shiju.jose@...wei.com, joe@...ches.com
Subject: Re: [PATCH V12 00/10] Add UEFI 2.6 and ACPI 6.1 updates for RAS on
 ARM64

On 3/7/2017 4:37 AM, James Morse wrote:
> Hi Tyler,
>
> On 06/03/17 20:44, 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.
> This series doesn't apply cleanly to v4.11-rc1, what did you base it on?
>
> Please base this on a v4.11 release candidate if you want it considered for v4.12.
>
This was based on 4.10, I will base it on 4.11-rc1 for the next patch set.

Thanks,
Tyler

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