Messages in this thread | | | Subject | Re: [PATCH v3 0/4] KVM: x86: MSR_TSC_AUX fixes and improvements | From | Paolo Bonzini <> | Date | Mon, 26 Apr 2021 11:26:49 +0200 |
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On 24/04/21 00:34, Sean Christopherson wrote: > Fix potential cross-vendor landmines due to Intel and AMD having different > behavior for MSR_TSC_AUX[63:32], unify the logic across SVM and VMX, and > switch MSR_TSC_AUX via user return MSRs on SVM (the original goal). > > v3: > - Fix a comment typo. [Reiji] > - Add patches to add missing guest_cpuid_has() check, drop bits 63:32 on > AMD, and unify VMX and SVM emulation. > - Rebase to kvm/next, commit c4f71901d53b ("Merge tag 'kvmarm-5.13' ... ) > > v2: > - Rebase to kvm/queue (ish), commit 0e91d1992235 ("KVM: SVM: Allocate SEV > command structures on local stack") > - https://lkml.kernel.org/r/20210422001736.3255735-1-seanjc@google.com > > v1: https://lkml.kernel.org/r/20210206003224.302728-1-seanjc@google.com > > > Sean Christopherson (4): > KVM: SVM: Inject #GP on guest MSR_TSC_AUX accesses if RDTSCP > unsupported > KVM: SVM: Clear MSR_TSC_AUX[63:32] on write > KVM: x86: Tie Intel and AMD behavior for MSR_TSC_AUX to guest CPU > model > KVM: SVM: Delay restoration of host MSR_TSC_AUX until return to > userspace > > arch/x86/kvm/svm/svm.c | 58 +++++++++++++++++------------------------- > arch/x86/kvm/svm/svm.h | 7 ----- > arch/x86/kvm/vmx/vmx.c | 13 ---------- > arch/x86/kvm/x86.c | 34 +++++++++++++++++++++++++ > 4 files changed, 58 insertions(+), 54 deletions(-) >
Queued 1-2-4 (with fix for patch 2).
Paolo
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