Re: ping Re: [PATCH v4 0/2] x86: Fix ARCH_REQ_XCOMP_PERM and update the test

Thomas Gleixner
2022-03-23T17:07:34Z

On Wed, Mar 23 2022 at 15:24, Paolo Bonzini wrote:
> On 3/23/22 13:55, Thomas Gleixner wrote:
>> --- a/arch/x86/kernel/fpu/xstate.c
>> +++ b/arch/x86/kernel/fpu/xstate.c
>> @@ -1625,6 +1625,8 @@ static int __xstate_request_perm(u64 per
>>
>> /* Calculate the resulting kernel state size */
>> mask = permitted | requested;
>> + /* Take supervisor states into account */
>> + mask |= xfeatures_mask_supervisor();
>> ksize = xstate_calculate_size(mask, compacted);
>>
>
> This should be only added in for the !guest case.

Yes, I figured that out already :)