Messages in this thread | | | Date | Wed, 26 Jan 2022 18:15:07 +0100 | Subject | Re: [PATCH] KVM: x86: Keep MSR_IA32_XSS unchanged for INIT | From | Paolo Bonzini <> |
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On 1/26/22 04:47, Xiaoyao Li wrote: > It has been corrected from SDM version 075 that MSR_IA32_XSS is reset to > zero on Power up and Reset but keeps unchanged on INIT. > > Fixes: a554d207dc46 ("KVM: X86: Processor States following Reset or INIT") > Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com> > --- > arch/x86/kvm/x86.c | 3 +-- > 1 file changed, 1 insertion(+), 2 deletions(-) > > diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c > index 55518b7d3b96..c0727939684e 100644 > --- a/arch/x86/kvm/x86.c > +++ b/arch/x86/kvm/x86.c > @@ -11257,6 +11257,7 @@ void kvm_vcpu_reset(struct kvm_vcpu *vcpu, bool init_event) > vcpu->arch.msr_misc_features_enables = 0; > > vcpu->arch.xcr0 = XFEATURE_MASK_FP; > + vcpu->arch.ia32_xss = 0; > } > > /* All GPRs except RDX (handled below) are zeroed on RESET/INIT. */ > @@ -11273,8 +11274,6 @@ void kvm_vcpu_reset(struct kvm_vcpu *vcpu, bool init_event) > cpuid_0x1 = kvm_find_cpuid_entry(vcpu, 1, 0); > kvm_rdx_write(vcpu, cpuid_0x1 ? cpuid_0x1->eax : 0x600); > > - vcpu->arch.ia32_xss = 0; > - > static_call(kvm_x86_vcpu_reset)(vcpu, init_event); > > kvm_set_rflags(vcpu, X86_EFLAGS_FIXED);
Queued, thanks.
Paolo
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