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SubjectRe: [PATCH v2 01/23] x86/fpu: Extend fpu_xstate_prctl() with guest permissions
Date
On Fri, Dec 17 2021 at 07:29, Jing Liu wrote:
>
> -static int __xstate_request_perm(u64 permitted, u64 requested)
> +static int __xstate_request_perm(u64 permitted, u64 requested, bool guest)
> {
> /*
> * This deliberately does not exclude !XSAVES as we still might
> @@ -1605,6 +1605,7 @@ static int __xstate_request_perm(u64 permitted, u64 requested)
> */
> bool compacted = cpu_feature_enabled(X86_FEATURE_XSAVES);
> struct fpu *fpu = &current->group_leader->thread.fpu;
> + struct fpu_state_perm *perm;
> unsigned int ksize, usize;
> u64 mask;
> int ret;

needs to be

int ret = 0;

Do not blindly copy code from that Gleixner dude...

Thanks,

tglx

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