diff options
| author | Sean Christopherson <sean.j.christopherson@intel.com> | 2020-04-28 16:10:25 -0700 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-05-15 12:26:17 -0400 |
| commit | 9e826feb8f114964cbdce026340b6cb9bde68a18 (patch) | |
| tree | 12eb87a69c8fd8588bba0d4361539837cdc78064 /arch/x86/kvm/vmx | |
| parent | 2408500dfc8f275f9057586b81466989f0fafc59 (diff) | |
KVM: nVMX: Drop superfluous VMREAD of vmcs02.GUEST_SYSENTER_*
Don't propagate GUEST_SYSENTER_* from vmcs02 to vmcs12 on nested VM-Exit
as the vmcs12 fields are updated in vmx_set_msr(), and writes to the
corresponding MSRs are always intercepted by KVM when running L2.
Dropping the propagation was intended to be done in the same commit that
added vmcs12 writes in vmx_set_msr()[1], but for reasons unknown was
only shuffled around[2][3].
[1] https://patchwork.kernel.org/patch/10933215
[2] https://patchwork.kernel.org/patch/10933215/#22682289
[3] https://lore.kernel.org/patchwork/patch/1088643
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Message-Id: <20200428231025.12766-3-sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/vmx')
| -rw-r--r-- | arch/x86/kvm/vmx/nested.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/arch/x86/kvm/vmx/nested.c b/arch/x86/kvm/vmx/nested.c index b2cd8d399644..135adc624592 100644 --- a/arch/x86/kvm/vmx/nested.c +++ b/arch/x86/kvm/vmx/nested.c @@ -3952,10 +3952,6 @@ static void sync_vmcs02_to_vmcs12(struct kvm_vcpu *vcpu, struct vmcs12 *vmcs12) vmcs12->guest_cs_ar_bytes = vmcs_read32(GUEST_CS_AR_BYTES); vmcs12->guest_ss_ar_bytes = vmcs_read32(GUEST_SS_AR_BYTES); - vmcs12->guest_sysenter_cs = vmcs_read32(GUEST_SYSENTER_CS); - vmcs12->guest_sysenter_esp = vmcs_readl(GUEST_SYSENTER_ESP); - vmcs12->guest_sysenter_eip = vmcs_readl(GUEST_SYSENTER_EIP); - vmcs12->guest_interruptibility_info = vmcs_read32(GUEST_INTERRUPTIBILITY_INFO); |