Messages in this thread | | | Date | Tue, 14 Nov 2023 15:47:40 +0800 | From | Chao Gao <> | Subject | Re: [PATCH v1 09/23] KVM: VMX: Switch FRED RSP0 between host and guest |
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>> >diff --git a/arch/x86/kvm/vmx/vmx.h b/arch/x86/kvm/vmx/vmx.h index >> >f8c02bd37069..328a3447f064 100644 >> >--- a/arch/x86/kvm/vmx/vmx.h >> >+++ b/arch/x86/kvm/vmx/vmx.h >> >@@ -276,6 +276,8 @@ struct vcpu_vmx { >> > #ifdef CONFIG_X86_64 >> > u64 msr_host_kernel_gs_base; >> > u64 msr_guest_kernel_gs_base; >> >+ u64 msr_host_fred_rsp0; >> >+ u64 msr_guest_fred_rsp0; >> >> resetting guest fred rsp0 to 0 during vcpu reset is missing. > >hmm, I assume it gets the same treatment as guest_kernel_gs_base. > >It seems we don't reset guest_kernel_gs_base. No?
Yes. But for fred MSRs, FRED spec clearly says their RESET values are 0s. for kernel_gs_base MSR, looks there is no such description in SDM.
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