Messages in this thread Patch in this message | | | From | Yang Weijiang <> | Subject | [PATCH v5 09/13] KVM: x86: Report XSS as an MSR to be saved if there are supported features | Date | Fri, 9 Jul 2021 18:05:07 +0800 |
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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.
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com> Signed-off-by: Yang Weijiang <weijiang.yang@intel.com> Message-Id: <20210203113421.5759-2-weijiang.yang@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> --- arch/x86/kvm/x86.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 5f2e13c9f507..c225260c949e 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -1299,6 +1299,7 @@ static const u32 msrs_to_save_all[] = { MSR_ARCH_PERFMON_EVENTSEL0 + 14, MSR_ARCH_PERFMON_EVENTSEL0 + 15, MSR_ARCH_PERFMON_EVENTSEL0 + 16, MSR_ARCH_PERFMON_EVENTSEL0 + 17, MSR_ARCH_LBR_CTL, MSR_ARCH_LBR_DEPTH, + MSR_IA32_XSS, }; static u32 msrs_to_save[ARRAY_SIZE(msrs_to_save_all)]; @@ -6058,6 +6059,10 @@ static void kvm_init_msr_list(void) if (!kvm_cpu_cap_has(X86_FEATURE_ARCH_LBR)) continue; break; + case MSR_IA32_XSS: + if (!supported_xss) + continue; + break; default: break; } -- 2.21.1
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