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Groups > linux.kernel > #1305541
| From | Borislav Petkov <bp@alien8.de> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH v8 3/3] x86, mce: Add __mcsafe_copy() |
| Date | 2016-01-10 12:30 +0100 |
| Message-ID | <qPmm6-3uu-9@gated-at.bofh.it> (permalink) |
| References | (5 earlier) <qP7Gq-1HI-3@gated-at.bofh.it> <qPa1B-3rw-9@gated-at.bofh.it> <qPakW-3yt-15@gated-at.bofh.it> <qPc3o-4Mp-1@gated-at.bofh.it> <qPdiO-5Bj-3@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Sat, Jan 09, 2016 at 05:40:05PM -0800, Tony Luck wrote:
> BUT ... it's all going to be very messy. We don't have any CPUID
> capability bits to say whether we support recovery, or which instructions
> are good/bad choices for recovery.
We can always define synthetic ones and set them after having checked
MCA capability bits, f/m/s, etc., maybe even based on the list you're
supplying...
> Linux code recently got some recovery bits for AMD cpus ... I don't
> know what the story is on which models support this,
You mean this?
/*
* overflow_recov is supported for F15h Models 00h-0fh
* even though we don't have a CPUID bit for it.
*/
if (c->x86 == 0x15 && c->x86_model <= 0xf)
mce_flags.overflow_recov = 1;
If so, that's just an improvement which makes MCi_STATUS[Overflow] MCEs
non-fatal.
--
Regards/Gruss,
Boris.
ECO tip #101: Trim your mails when you reply.
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[PATCH v8 3/3] x86, mce: Add __mcsafe_copy() Tony Luck <tony.luck@intel.com> - 2016-01-09 01:20 +0100
Re: [PATCH v8 3/3] x86, mce: Add __mcsafe_copy() Andy Lutomirski <luto@amacapital.net> - 2016-01-09 02:50 +0100
Re: [PATCH v8 3/3] x86, mce: Add __mcsafe_copy() Tony Luck <tony.luck@gmail.com> - 2016-01-09 18:50 +0100
Re: [PATCH v8 3/3] x86, mce: Add __mcsafe_copy() Andy Lutomirski <luto@amacapital.net> - 2016-01-09 19:00 +0100
Re: [PATCH v8 3/3] x86, mce: Add __mcsafe_copy() Tony Luck <tony.luck@gmail.com> - 2016-01-09 20:50 +0100
Re: [PATCH v8 3/3] x86, mce: Add __mcsafe_copy() Dan Williams <dan.j.williams@intel.com> - 2016-01-09 23:20 +0100
Re: [PATCH v8 3/3] x86, mce: Add __mcsafe_copy() Andy Lutomirski <luto@amacapital.net> - 2016-01-09 23:40 +0100
Re: [PATCH v8 3/3] x86, mce: Add __mcsafe_copy() Dan Williams <dan.j.williams@intel.com> - 2016-01-10 01:30 +0100
Re: [PATCH v8 3/3] x86, mce: Add __mcsafe_copy() Tony Luck <tony.luck@gmail.com> - 2016-01-10 02:50 +0100
Re: [PATCH v8 3/3] x86, mce: Add __mcsafe_copy() Borislav Petkov <bp@alien8.de> - 2016-01-10 12:30 +0100
Re: [PATCH v8 3/3] x86, mce: Add __mcsafe_copy() Ingo Molnar <mingo@kernel.org> - 2016-01-11 11:50 +0100
Re: [PATCH v8 3/3] x86, mce: Add __mcsafe_copy() Tony Luck <tony.luck@gmail.com> - 2016-01-14 00:30 +0100
Re: [PATCH v8 3/3] x86, mce: Add __mcsafe_copy() Borislav Petkov <bp@alien8.de> - 2016-01-14 05:50 +0100
Re: [PATCH v8 3/3] x86, mce: Add __mcsafe_copy() "Luck, Tony" <tony.luck@intel.com> - 2016-01-12 01:30 +0100
Re: [PATCH v8 3/3] x86, mce: Add __mcsafe_copy() Andy Lutomirski <luto@amacapital.net> - 2016-01-12 01:40 +0100
Re: [PATCH v8 3/3] x86, mce: Add __mcsafe_copy() Andy Lutomirski <luto@amacapital.net> - 2016-01-12 01:40 +0100
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