Messages in this thread | | | Date | Fri, 18 Feb 2022 17:14:02 +0100 | From | Borislav Petkov <> | Subject | Re: [PATCH v2] x86/mce: work around an erratum on fast string copy instructions. |
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On Fri, Feb 18, 2022 at 08:03:24AM -0800, Jue Wang wrote: > Since MSR_IA32_MISC_ENABLE is not a MCA register, I wonder if we want > to mix its read/write with the injected MCE code. > > I was a bit concerned about potential race with mce-inject and the > read/write to MSR_IA32_MISC_ENABLE.
It won't inject anything:
offset = msr_to_offset(msr); if (offset < 0) ret = 0;
Besides, you need to use those routines due to EX_TYPE_{RD,WR}MSR_IN_MCE
-- Regards/Gruss, Boris.
https://people.kernel.org/tglx/notes-about-netiquette
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