On Wed, Sep 28, 2022 at 01:49:34PM +0300, Maxim Levitsky wrote: > Patch 5 is the main fix - it makes the kernel to be tolerant to a > broken CPUID config (coming hopefully from hypervisor), where you have > a feature (AVX2 in my case) but not a feature on which this feature > depends (AVX). I really really don't like it when people are fixing the wrong thing. Why does the kernel need to get fixed when something else can't get its CPUID dependencies straight? I don't even want to know why something would set AVX2 without AVX?!?! Srsly. Some of your other bits look sensible and I'd take a deeper look but this does not make any sense. This is a hypervisor problem - not a kernel one. Thx. -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette