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| author | Vineeth Pillai <viremana@linux.microsoft.com> | 2021-06-03 15:14:40 +0000 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-06-17 13:09:38 -0400 |
| commit | 1183646a67d01ef9c46ac87da1c57dea5f7bb153 (patch) | |
| tree | 37241d8656eb3d9ea00d327acbfb111659f0d4fb /arch/x86/kvm/svm/svm.c | |
| parent | c4327f15dfc7294b2abde0ea49b3e43eec3cca38 (diff) | |
| download | lwn-1183646a67d01ef9c46ac87da1c57dea5f7bb153.tar.gz lwn-1183646a67d01ef9c46ac87da1c57dea5f7bb153.zip | |
KVM: SVM: hyper-v: Direct Virtual Flush support
From Hyper-V TLFS:
"The hypervisor exposes hypercalls (HvFlushVirtualAddressSpace,
HvFlushVirtualAddressSpaceEx, HvFlushVirtualAddressList, and
HvFlushVirtualAddressListEx) that allow operating systems to more
efficiently manage the virtual TLB. The L1 hypervisor can choose to
allow its guest to use those hypercalls and delegate the responsibility
to handle them to the L0 hypervisor. This requires the use of a
partition assist page."
Add the Direct Virtual Flush support for SVM.
Related VMX changes:
commit 6f6a657c9998 ("KVM/Hyper-V/VMX: Add direct tlb flush support")
Signed-off-by: Vineeth Pillai <viremana@linux.microsoft.com>
Message-Id: <fc8d24d8eb7017266bb961e39a171b0caf298d7f.1622730232.git.viremana@linux.microsoft.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/svm/svm.c')
| -rw-r--r-- | arch/x86/kvm/svm/svm.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c index 1b0056ef36af..9bb4692728ef 100644 --- a/arch/x86/kvm/svm/svm.c +++ b/arch/x86/kvm/svm/svm.c @@ -3781,6 +3781,8 @@ static __no_kcsan fastpath_t svm_vcpu_run(struct kvm_vcpu *vcpu) } svm->vmcb->save.cr2 = vcpu->arch.cr2; + svm_hv_update_vp_id(svm->vmcb, vcpu); + /* * Run with all-zero DR6 unless needed, so that we can get the exact cause * of a #DB. |