diff options
| author |   Sean Christopherson <seanjc@google.com> | 2022-06-14 21:58:31 +0000 |
|---|---|---|
| committer |   Paolo Bonzini <pbonzini@redhat.com> | 2022-06-20 06:21:21 -0400 |
| commit | 913d6c9b8fe48f0836c00e359fb1ea39089d25e9 (patch) | |
| tree | 974f8391a3884323cd70f0e7a1517d8c3adcbe7f /arch/x86/kvm/vmx/nested.c | |
| parent | KVM: nVMX: Save BNDCFGS to vmcs12 iff relevant controls are exposed to L1 (diff) | |
| download | linux-dev-913d6c9b8fe48f0836c00e359fb1ea39089d25e9.tar.xz linux-dev-913d6c9b8fe48f0836c00e359fb1ea39089d25e9.zip | |
KVM: nVMX: Update vmcs12 on BNDCFGS write, not at vmcs02=>vmcs12 sync
Update vmcs12->guest_bndcfgs on intercepted writes to BNDCFGS from L2
instead of waiting until vmcs02 is synchronized to vmcs12. KVM always
intercepts BNDCFGS accesses, so the only way the value in vmcs02 can
change is via KVM's explicit VMWRITE during emulation.
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20220614215831.3762138-6-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/vmx/nested.c')
| -rw-r--r-- | arch/x86/kvm/vmx/nested.c | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/arch/x86/kvm/vmx/nested.c b/arch/x86/kvm/vmx/nested.c index 496981b86f94..aad938e1e51d 100644 --- a/arch/x86/kvm/vmx/nested.c +++ b/arch/x86/kvm/vmx/nested.c @@ -4104,9 +4104,6 @@ static void sync_vmcs02_to_vmcs12_rare(struct kvm_vcpu *vcpu, vmcs12->guest_idtr_base = vmcs_readl(GUEST_IDTR_BASE); vmcs12->guest_pending_dbg_exceptions = vmcs_readl(GUEST_PENDING_DBG_EXCEPTIONS); - if ((vmx->nested.msrs.entry_ctls_high & VM_ENTRY_LOAD_BNDCFGS) || - (vmx->nested.msrs.exit_ctls_high & VM_EXIT_CLEAR_BNDCFGS)) - vmcs12->guest_bndcfgs = vmcs_read64(GUEST_BNDCFGS); vmx->nested.need_sync_vmcs02_to_vmcs12_rare = false; } |