Paolo Bonzini <pbonzini@xxxxxxxxxx> writes: > On 12/20/21 16:21, Vitaly Kuznetsov wrote: >> Enlightened MSR-Bitmap feature implements a PV protocol for L0 and L1 >> hypervisors to collaborate and skip unneeded updates to MSR-Bitmap. >> KVM implements the feature for KVM-on-Hyper-V but it seems there was >> a flaw in the implementation and the feature may not be fully functional. >> PATCHes 1-2 fix the problem. The rest of the series implements the same >> feature for Hyper-V-on-KVM. >> >> Vitaly Kuznetsov (5): >> KVM: SVM: Drop stale comment from >> svm_hv_vmcb_dirty_nested_enlightenments() >> KVM: SVM: hyper-v: Enable Enlightened MSR-Bitmap support for real >> KVM: nSVM: Track whether changes in L0 require MSR bitmap for L2 to be >> rebuilt >> KVM: x86: Make kvm_hv_hypercall_enabled() static inline >> KVM: nSVM: Implement Enlightened MSR-Bitmap feature >> >> arch/x86/kvm/hyperv.c | 12 +-------- >> arch/x86/kvm/hyperv.h | 6 ++++- >> arch/x86/kvm/svm/nested.c | 47 ++++++++++++++++++++++++++++----- >> arch/x86/kvm/svm/svm.c | 3 ++- >> arch/x86/kvm/svm/svm.h | 16 +++++++---- >> arch/x86/kvm/svm/svm_onhyperv.h | 12 +++------ >> 6 files changed, 63 insertions(+), 33 deletions(-) >> > > Queued 3-5 now, but it would be nice to have some testcases. > Thanks, indeed, I'll try to draft something up, both for nVMX and nSVM. -- Vitaly
