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Groups > linux.kernel > #1341921
| From | Borislav Petkov <bp@alien8.de> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH 3/4] x86/mce: Clarify comments regarding deferred error |
| Date | 2016-02-24 12:40 +0100 |
| Message-ID | <r5FXs-3Sa-11@gated-at.bofh.it> (permalink) |
| References | <r2VvH-530-5@gated-at.bofh.it> <r2VvI-530-27@gated-at.bofh.it> <r5k6D-5fs-29@gated-at.bofh.it> <r5upk-47T-5@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Tue, Feb 23, 2016 at 05:02:40PM -0600, Aravind Gopalakrishnan wrote:
> On 2/23/16 6:11 AM, Borislav Petkov wrote:
> >On Tue, Feb 16, 2016 at 03:45:10PM -0600, Aravind Gopalakrishnan wrote:
> >> /* AMD-specific bits */
> >>-#define MCI_STATUS_DEFERRED (1ULL<<44) /* declare an uncorrected error */
> >>+#define MCI_STATUS_DEFERRED (1ULL<<44) /* declare a deferred error */
> >/* uncorrected error, deferred exception */
> >
> >sounds better to me.
>
> Hmm. Well, Deferred error is a separate class of error by itself.
> It's neither Corrected in HW nor is it Uncorrected like a MCE.
Let's consult the BKDG:
"Deferred: deferred error.
Read-write; Updated-by-hardware. Cold reset:0.
1=A deferred error was created. A deferred error is the result of an
uncorrectable data error which did not immediately cause a processor
exception; the data is poisoned and an exception is deferred until
the data is loaded by a core. See 2.16.1.10 [Deferred Errors and Data
Poisoning]."
So it is an uncorrected error for which the raising of the error
exception was deferred until consumption.
> If you feel "Uncorrected error, deferred error exception" won;t be
> confusing, that's OK with me.
Why would it be confusing? It is describing exactly what a deferred
error is, albeit a bit too laconic but people can find the longer
description.
--
Regards/Gruss,
Boris.
ECO tip #101: Trim your mails when you reply.
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Re: [PATCH 3/4] x86/mce: Clarify comments regarding deferred error Borislav Petkov <bp@alien8.de> - 2016-02-23 13:20 +0100
Re: [PATCH 3/4] x86/mce: Clarify comments regarding deferred error Aravind Gopalakrishnan <aravind.gopalakrishnan@amd.com> - 2016-02-24 00:20 +0100
Re: [PATCH 3/4] x86/mce: Clarify comments regarding deferred error Borislav Petkov <bp@alien8.de> - 2016-02-24 12:40 +0100
Re: [PATCH 3/4] x86/mce: Clarify comments regarding deferred error Boris Petkov <bp@alien8.de> - 2016-02-24 21:40 +0100
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