Messages in this thread Patch in this message | | | Date | Wed, 24 May 2023 15:06:35 +0800 | From | Chao Gao <> | Subject | Re: [PATCH v3 06/21] KVM:x86: Report XSS as to-be-saved if there are supported features |
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On Thu, May 11, 2023 at 12:08:42AM -0400, Yang Weijiang wrote: >From: Sean Christopherson <sean.j.christopherson@intel.com> > >Add MSR_IA32_XSS to the list of MSRs reported to userspace if >supported_xss is non-zero, i.e. KVM supports at least one XSS based >feature.
The changelog doesn't match what the patch does.
Do you need to check if supported_xss is non-zero in kvm_probe_msr_to_save(), e.g., case MSR_IA32_XSS: if (!kvm_caps.supported_xss) return; break;
> >Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com> >Signed-off-by: Yang Weijiang <weijiang.yang@intel.com> >--- > arch/x86/kvm/x86.c | 1 + > 1 file changed, 1 insertion(+) > >diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c >index e7f78fe79b32..33a780fe820b 100644 >--- a/arch/x86/kvm/x86.c >+++ b/arch/x86/kvm/x86.c >@@ -1454,6 +1454,7 @@ static const u32 msrs_to_save_base[] = { > MSR_IA32_UMWAIT_CONTROL, > > MSR_IA32_XFD, MSR_IA32_XFD_ERR, >+ MSR_IA32_XSS, > }; > > static const u32 msrs_to_save_pmu[] = { >-- >2.27.0 >
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