RE: [PATCH v6 07/21] x86/fpu: Provide fpu_enable_guest_xfd_features() for KVM

[Tian, Kevin]

Hi, Paolo,

> From: Paolo Bonzini <pbonzini@xxxxxxxxxx>
> Sent: Saturday, January 8, 2022 2:55 AM
> 
> +/*
> +  * fpu_enable_guest_xfd_features - Check xfeatures against guest perm
> and enable
> +  * @guest_fpu:         Pointer to the guest FPU container
> +  * @xfeatures:         Features requested by guest CPUID
> +  *
> +  * Enable all dynamic xfeatures according to guest perm and requested
> CPUID.
> +  *
> +  * Return: 0 on success, error code otherwise
> +  */

Just a NIT. This function itself has nothing to do with guest CPUID
which is a caller-side policy. It simply enable xfeatures per request.

Thanks
Kevin