Messages in this thread | | | Date | Wed, 9 Aug 2023 11:14:20 +0800 | Subject | Re: [PATCH v5 08/19] KVM:x86: Report KVM supported CET MSRs as to-be-saved | From | "Yang, Weijiang" <> |
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On 8/5/2023 5:47 AM, Paolo Bonzini wrote: > On 8/3/23 06:27, Yang Weijiang wrote: >> Add all CET MSRs including the synthesized GUEST_SSP to report list. >> PL{0,1,2}_SSP are independent to host XSAVE management with later >> patches. MSR_IA32_U_CET and MSR_IA32_PL3_SSP are XSAVE-managed on >> host side. MSR_IA32_S_CET/MSR_IA32_INT_SSP_TAB/MSR_KVM_GUEST_SSP >> are not XSAVE-managed. > > MSR_KVM_GUEST_SSP -> MSR_KVM_SSP > > Also please add a comment, > > /* > * SSP can only be read via RDSSP; writing even requires > * destructive and potentially faulting operations such as > * SAVEPREVSSP/RSTORSSP or SETSSBSY/CLRSSBSY. Let the host > * use a pseudo-MSR that is just a wrapper for the GUEST_SSP > * field of the VMCS. > */ > OK, will take it, thanks! > Paolo >
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