From: "Alex G." <mr.nuke.me@gmail.com>
To: "Luck, Tony" <tony.luck@intel.com>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>,
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>,
Tyler Baicar <tbaicar@codeaurora.org>,
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>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v6 1/2] acpi: apei: Rename ghes_severity() to ghes_cper_severity()
Date: Tue, 22 May 2018 13:49:04 -0500 [thread overview]
Message-ID: <9d4b10fa-dcd8-8071-e68b-24536b24e780@gmail.com> (raw)
In-Reply-To: <20180522184532.GA4360@agluck-desk>
On 05/22/2018 01:45 PM, Luck, Tony wrote:
> On Tue, May 22, 2018 at 01:19:34PM -0500, Alex G. wrote:
>> Firmware started passing "fatal" GHES headers with the explicit intent of
>> crashing an OS. At the same time, we've learnt how to handle these errors in
>> a number of cases. With DPC (coming soon to firmware-first) the error is
>> contained, and a non-issue.
>
> Perhaps DPC is the change that you need to emphasize as to
> why things are different now, so we can change the default
> Linux behavior.
>
> With the h/w guaranteeing that corrupt data is contained, we
> should be safe to disregard BIOS indications of "fatal" problems
> that could be anything and might show up in unknown ways some
> time later if we keep running.
Sure. DPC is much harder to contest as a reason. However, the AER path
benefits as well from this change in behavior. I'm certain there are
other classes of errors that benefit as well from the change, though I
haven't had the time or the inclination to look for them.
Alex
next prev parent reply other threads:[~2018-05-22 18:49 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-21 13:49 [PATCH v6 0/2] acpi: apei: Improve PCIe error handling with FFS Alexandru Gagniuc
2018-05-21 13:49 ` [PATCH v6 1/2] acpi: apei: Rename ghes_severity() to ghes_cper_severity() Alexandru Gagniuc
2018-05-22 8:55 ` Rafael J. Wysocki
2018-05-22 13:38 ` Alex G.
2018-05-22 13:50 ` Borislav Petkov
2018-05-22 14:39 ` Alex G.
2018-05-22 14:54 ` Borislav Petkov
2018-05-22 15:22 ` Alex G.
2018-05-22 15:33 ` Borislav Petkov
2018-05-22 17:57 ` Luck, Tony
2018-05-22 18:10 ` Rafael J. Wysocki
2018-05-22 18:19 ` Alex G.
2018-05-22 18:45 ` Luck, Tony
2018-05-22 18:49 ` Alex G. [this message]
2018-05-22 18:33 ` Luck, Tony
2018-05-22 18:13 ` Alex G.
2018-05-22 18:13 ` Rafael J. Wysocki
2018-05-22 18:20 ` Alex G.
2018-05-22 21:20 ` Rafael J. Wysocki
2018-05-21 13:49 ` [PATCH v6 2/2] acpi: apei: Do not panic() on PCIe errors reported through GHES Alexandru Gagniuc
2018-05-21 14:27 ` Tyler Baicar
2018-05-21 17:40 ` Alex G.
2018-05-22 9:02 ` Rafael J. Wysocki
2018-05-22 14:32 ` Alex G.
2018-05-22 15:15 ` Tyler Baicar
2018-05-22 15:18 ` Alex G.
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