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| author | Vineeth Pillai <viremana@linux.microsoft.com> | 2021-06-03 17:14:39 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-06-17 19:09:37 +0200 |
| commit | c4327f15dfc7294b2abde0ea49b3e43eec3cca38 (patch) | |
| tree | 40c4da6a0f90aee735567efe05a003a548a4bd74 /arch/x86/kvm/svm/svm.h | |
| parent | KVM: SVM: hyper-v: Remote TLB flush for SVM (diff) | |
| download | linux-c4327f15dfc7294b2abde0ea49b3e43eec3cca38.tar.xz linux-c4327f15dfc7294b2abde0ea49b3e43eec3cca38.zip | |
KVM: SVM: hyper-v: Enlightened MSR-Bitmap support
Enlightened MSR-Bitmap as per TLFS:
"The L1 hypervisor may collaborate with the L0 hypervisor to make MSR
accesses more efficient. It can enable enlightened MSR bitmaps by setting
the corresponding field in the enlightened VMCS to 1. When enabled, L0
hypervisor does not monitor the MSR bitmaps for changes. Instead, the L1
hypervisor must invalidate the corresponding clean field after making
changes to one of the MSR bitmaps."
Enable this for SVM.
Related VMX changes:
commit ceef7d10dfb6 ("KVM: x86: VMX: hyper-v: Enlightened MSR-Bitmap support")
Signed-off-by: Vineeth Pillai <viremana@linux.microsoft.com>
Message-Id: <87df0710f95d28b91cc4ea014fc4d71056eebbee.1622730232.git.viremana@linux.microsoft.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/svm/svm.h')
| -rw-r--r-- | arch/x86/kvm/svm/svm.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/x86/kvm/svm/svm.h b/arch/x86/kvm/svm/svm.h index af09bcd229bd..670f0c0ed73b 100644 --- a/arch/x86/kvm/svm/svm.h +++ b/arch/x86/kvm/svm/svm.h @@ -254,6 +254,11 @@ static inline void vmcb_mark_all_clean(struct vmcb *vmcb) & ~VMCB_ALWAYS_DIRTY_MASK; } +static inline bool vmcb_is_clean(struct vmcb *vmcb, int bit) +{ + return (vmcb->control.clean & (1 << bit)); +} + static inline void vmcb_mark_dirty(struct vmcb *vmcb, int bit) { vmcb->control.clean &= ~(1 << bit); |