linux-kernel - Re: [PATCH v6 2/2] acpi: apei: Do not panic() on PCIe errors reported through GHES

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Message-ID: <50e318d3-b581-ad8b-d0e3-3e6c7b0da080@codeaurora.org>
Date:   Tue, 22 May 2018 11:15:29 -0400
From:   Tyler Baicar <tbaicar@...eaurora.org>
To:     "Alex G." <mr.nuke.me@...il.com>,
        "Rafael J. Wysocki" <rafael@...nel.org>
Cc:     Borislav Petkov <bp@...en8.de>, alex_gagniuc@...lteam.com,
        austin_bolen@...l.com, shyam_iyer@...l.com,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Len Brown <lenb@...nel.org>, Tony Luck <tony.luck@...el.com>,
        Will Deacon <will.deacon@....com>,
        James Morse <james.morse@....com>,
        Shiju Jose <shiju.jose@...wei.com>,
        "Jonathan (Zhixiong) Zhang" <zjzhang@...eaurora.org>,
        Dongjiu Geng <gengdongjiu@...wei.com>,
        ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v6 2/2] acpi: apei: Do not panic() on PCIe errors reported
 through GHES

On 5/22/2018 10:32 AM, Alex G. wrote:
> I think the biggest problem is having a policy to panic on "fatal"
> errors, instead of letting the error handler make that decision. I'd
> much rather kill that stupid policy, but people seem to like it for some
> reason.
>
You can get around that panic and still have the error handled as AER_FATAL in
the current code. Your FW needs to mark the error as RECOVERABLE and then
set the CPER_SEC_RESET flag.

https://elixir.bootlin.com/linux/v4.17-rc6/source/drivers/acpi/apei/ghes.c#L450

Thanks,
Tyler

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