Re: [RFC PATCH v2 39/69] KVM: x86: Add guest_supported_xss placholder

[Paolo Bonzini]

On 03/07/21 00:04, isaku.yamahata@xxxxxxxxx wrote:
> From: Sean Christopherson <sean.j.christopherson@xxxxxxxxx>
>
> Add a per-vcpu placeholder for the support XSS of the guest so that the
> TDX configuration code doesn't need to hack in manual computation of the
> supported XSS.  KVM XSS enabling is currently being upstreamed, i.e.
> guest_supported_xss will no longer be a placeholder by the time TDX is
> ready for upstreaming (hopefully).
>
> Signed-off-by: Sean Christopherson <sean.j.christopherson@xxxxxxxxx>
> Signed-off-by: Isaku Yamahata <isaku.yamahata@xxxxxxxxx>
> ---
>   arch/x86/include/asm/kvm_host.h | 1 +
>   1 file changed, 1 insertion(+)
>
> diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
> index 7822b531a5e2..c641654307c6 100644
> --- a/arch/x86/include/asm/kvm_host.h
> +++ b/arch/x86/include/asm/kvm_host.h
> @@ -656,6 +656,7 @@ struct kvm_vcpu_arch {
>   
>   	u64 xcr0;
>   	u64 guest_supported_xcr0;
> +	u64 guest_supported_xss;
>   
>   	struct kvm_pio_request pio;
>   	void *pio_data;

Please remove guest_supported_xss from patch 66 for now, instead.

Paolo