Re: [PATCH RFC] x86/cpu: fix intermittent lockup on poweroff

[Borislav Petkov]

On Tue, Apr 25, 2023 at 03:26:53PM -0400, Tony Battersby wrote:
> In stop_this_cpu(), make sure the CPUID leaf exists before accessing the
> leaf.  This fixes a lockup on poweroff 50% of the time due to the wrong
> branch being taken randomly on some CPUs (seen on Supermicro X8DTH-6F
> with Intel Xeon X5650).

Please send the output of

cpuid -r

from that machine.

Thx.

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette