Messages in this thread | | | Subject | Re: [PATCH v14 09/13] KVM: x86: Report CET MSRs as to-be-saved if CET is supported | From | Paolo Bonzini <> | Date | Thu, 28 Jan 2021 18:46:37 +0100 |
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On 06/11/20 02:16, Yang Weijiang wrote: > 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 | 9 +++++++++ > 1 file changed, 9 insertions(+) > > diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c > index 751b62e871e5..d573cadf5baf 100644 > --- a/arch/x86/kvm/x86.c > +++ b/arch/x86/kvm/x86.c > @@ -1248,6 +1248,8 @@ static const u32 msrs_to_save_all[] = { > MSR_ARCH_PERFMON_EVENTSEL0 + 16, MSR_ARCH_PERFMON_EVENTSEL0 + 17, > > MSR_IA32_XSS, > + MSR_IA32_U_CET, MSR_IA32_S_CET, MSR_IA32_INT_SSP_TAB, MSR_KVM_GUEST_SSP, > + MSR_IA32_PL0_SSP, MSR_IA32_PL1_SSP, MSR_IA32_PL2_SSP, MSR_IA32_PL3_SSP, > }; > > static u32 msrs_to_save[ARRAY_SIZE(msrs_to_save_all)]; > @@ -5761,6 +5763,13 @@ static void kvm_init_msr_list(void) > if (!supported_xss) > continue; > break; > + case MSR_IA32_U_CET: > + case MSR_IA32_S_CET: > + case MSR_IA32_INT_SSP_TAB: > + case MSR_IA32_PL0_SSP ... MSR_IA32_PL3_SSP: > + if (!kvm_cet_supported()) > + continue; > + break; > default: > break; > } >
Missing "case MSR_KVM_GUEST_SSP".
Paolo
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