diff mbox series

[RFC,v3,30/59] KVM: x86: Add guest_supported_xss placholder

Message ID 79e3a44d6b7852b255520ef57b59ce1324695630.1637799475.git.isaku.yamahata@intel.com (mailing list archive)
State New, archived
Headers show
Series KVM: X86: TDX support | expand

Commit Message

Isaku Yamahata Nov. 25, 2021, 12:20 a.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

Thomas Gleixner Nov. 25, 2021, 7:55 p.m. UTC | #1 
On Wed, Nov 24 2021 at 16:20, isaku yamahata 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).

Yes, hope dies last... Definitely technical useful information for a
changelog. There is a reason why notes should go below the --- separator
line.

Thanks,

        tglx
diff mbox series

Patch

diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index a2bc4d9caaef..2dab0899d82c 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -701,6 +701,7 @@  struct kvm_vcpu_arch {
 
 	u64 xcr0;
 	u64 guest_supported_xcr0;
+	u64 guest_supported_xss;
 
 	struct kvm_pio_request pio;
 	void *pio_data;