Messages in this thread | | | Date | Mon, 27 Feb 2023 08:39:02 -0800 | Subject | Re: [PATCH] x86/CPU/AMD: Make sure EFER[AIBRSE] is set | From | Dave Hansen <> |
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On 2/27/23 07:40, Borislav Petkov wrote: > On Mon, Feb 27, 2023 at 07:25:00AM -0800, Dave Hansen wrote: >> It will freak some users out, but it does seem like the kind of thing we >> _want_ a bug report for. > You mean, something like: > > if (spectre_v2_in_ibrs_mode(spectre_v2_enabled) && > cpu_has(c, X86_FEATURE_AUTOIBRS)) > WARN_ON_ONCE(msr_set_bit(MSR_EFER, _EFER_AUTOIBRS)); > > ?
Yep, that looks sane.
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