Re: [PATCH 2/4] Revert "x86/boot: Fail the boot if !M486 and CPUID is missing"

[Borislav Petkov]

On Thu, Dec 01, 2016 at 06:53:50AM +0100, Peter Zijlstra wrote:
> On Wed, Nov 30, 2016 at 12:34:53PM -0800, Andy Lutomirski wrote:
> > This reverts commit ed68d7e9b9cfb64f3045ffbcb108df03c09a0f98.
> > 
> > The patch wasn't quite correct -- there are non-Intel (and hence
> > non-486) CPUs that we support that don't have CPUID.  Since we no
> > longer require CPUID for sync_core(), just revert the patch.
>
> Might be useful to enumerate which special parts these are.

Right, and since we test for CPUID support at early boot, I think we
should use the X86_FEATURE_CPUID aspect from what I proposed earlier:

https://lkml.kernel.org/r/20161120111917.pw3alolx4fksfwbv@xxxxxxx

-- 
Regards/Gruss,
    Boris.

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