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Subject: Re: [PATCH v6 2/2] acpi: apei: Do not panic() on PCIe errors reported
 through GHES
To: "Alex G." <mr.nuke.me@gmail.com>,
        "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>, alex_gagniuc@dellteam.com,
        austin_bolen@dell.com, shyam_iyer@dell.com,
        "Rafael J. Wysocki" <rjw@rjwysocki.net>, Len Brown <lenb@kernel.org>,
        Tony Luck <tony.luck@intel.com>, Will Deacon <will.deacon@arm.com>,
        James Morse <james.morse@arm.com>, Shiju Jose <shiju.jose@huawei.com>,
        "Jonathan (Zhixiong) Zhang" <zjzhang@codeaurora.org>,
        Dongjiu Geng <gengdongjiu@huawei.com>,
        ACPI Devel Maling List <linux-acpi@vger.kernel.org>,
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References: <20180521135003.32459-1-mr.nuke.me@gmail.com>
 <20180521135003.32459-3-mr.nuke.me@gmail.com>
 <CAJZ5v0h+U1zNK+LdOH_pU7kb+c6VK7erZCRqaV2WauDE2cwc6w@mail.gmail.com>
 <5a72a503-e8d5-c317-89b4-86e574c48064@gmail.com>
From: Tyler Baicar <tbaicar@codeaurora.org>
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Date: Tue, 22 May 2018 11:15:29 -0400
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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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