Messages in this thread Patch in this message | | | From | Yang Weijiang <> | Subject | [PATCH 14/19] KVM: x86: Report CET MSRs as to-be-saved if CET is supported | Date | Thu, 16 Jun 2022 04:46:38 -0400 |
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Report all CET MSRs, including the synthetic GUEST_SSP MSR, as to-be-saved, e.g. for migration, if CET is supported by KVM.
Co-developed-by: Sean Christopherson <sean.j.christopherson@intel.com> Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com> Signed-off-by: Yang Weijiang <weijiang.yang@intel.com> --- arch/x86/kvm/x86.c | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index cce789f1246a..3613b73f13fb 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -1460,6 +1460,7 @@ static const u32 msrs_to_save_all[] = { MSR_F15H_PERF_CTR3, MSR_F15H_PERF_CTR4, MSR_F15H_PERF_CTR5, MSR_IA32_XFD, MSR_IA32_XFD_ERR, MSR_IA32_XSS, + MSR_IA32_U_CET, MSR_IA32_PL3_SSP, MSR_KVM_GUEST_SSP, }; static u32 msrs_to_save[ARRAY_SIZE(msrs_to_save_all)]; @@ -6814,6 +6815,12 @@ static void kvm_init_msr_list(void) if (!kvm_caps.supported_xss) continue; break; + case MSR_KVM_GUEST_SSP: + case MSR_IA32_U_CET: + case MSR_IA32_PL3_SSP: + if (!kvm_cet_user_supported()) + continue; + break; default: break; } -- 2.27.0
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