Re: [PATCH] prctl,x86 Add PR_[GET|SET]_CPUID for controlling the CPUID instruction.

[Borislav Petkov]

On Mon, Sep 12, 2016 at 09:56:11AM -0700, Andy Lutomirski wrote:
> This should have a cpufeature bit and show up in /proc/cpuinfo.  That

Haha, test a cpufeature with a faulting CPUID :-)

Yeah, we need a synthetic flag and query MSR_PLATFORM_INFO[31] which
denotes whether the other MSR - MISC_FEATURES_ENABLES - is there and bit
0 is defined.

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Regards/Gruss,
    Boris.

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