Messages in this thread Patch in this message | | | From | Yang Weijiang <> | Subject | [PATCH v10 01/16] KVM: x86: Report XSS as an MSR to be saved if there are supported features | Date | Fri, 22 Apr 2022 03:54:54 -0400 |
| |
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> --- 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 0c0ca599a353..20d94e7dbbfe 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -1428,6 +1428,7 @@ static const u32 msrs_to_save_all[] = { MSR_F15H_PERF_CTR0, MSR_F15H_PERF_CTR1, MSR_F15H_PERF_CTR2, MSR_F15H_PERF_CTR3, MSR_F15H_PERF_CTR4, MSR_F15H_PERF_CTR5, MSR_IA32_XFD, MSR_IA32_XFD_ERR, + MSR_IA32_XSS, }; static u32 msrs_to_save[ARRAY_SIZE(msrs_to_save_all)]; @@ -6654,6 +6655,10 @@ static void kvm_init_msr_list(void) if (!kvm_cpu_cap_has(X86_FEATURE_XFD)) continue; break; + case MSR_IA32_XSS: + if (!supported_xss) + continue; + break; default: break; } -- 2.27.0
| |