diff mbox series

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

Message ID 3bcd7285a0cb15974fdb0e8f81b61143a360f4a5.1625186503.git.isaku.yamahata@intel.com (mailing list archive)
State New, archived
Headers show
Series KVM: X86: TDX support | expand

Commit Message

Isaku Yamahata July 2, 2021, 10:04 p.m. UTC
From: Sean Christopherson <sean.j.christopherson@intel.com>

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@intel.com>
Signed-off-by: Isaku Yamahata <isaku.yamahata@intel.com>
---
 arch/x86/include/asm/kvm_host.h | 1 +
 1 file changed, 1 insertion(+)

Comments

Paolo Bonzini July 6, 2021, 2:41 p.m. UTC | #1
On 03/07/21 00:04, isaku.yamahata@intel.com wrote:
> From: Sean Christopherson <sean.j.christopherson@intel.com>
> 
> 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@intel.com>
> Signed-off-by: Isaku Yamahata <isaku.yamahata@intel.com>
> ---
>   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
diff mbox series

Patch

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;