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KVM: nVMX: Don't update vmcs12->xss_exit_bitmap on nested VM-exit

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The XSS-exiting bitmap is a VMCS control field that does not change
while the CPU is in non-root mode. Transferring the unchanged value
from vmcs02 to vmcs12 is unnecessary.

Signed-off-by: Jim Mattson <jmattson@google.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
This commit is contained in:
Jim Mattson 2017-06-01 12:43:37 -07:00 committed by Radim Krčmář
parent 4531662d1a
commit d923fcf636
1 changed files with 0 additions and 2 deletions
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arch/x86/kvm/vmx.c
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@ -10738,8 +10738,6 @@ static void sync_vmcs12(struct kvm_vcpu *vcpu, struct vmcs12 *vmcs12)
vmcs12->guest_sysenter_eip = vmcs_readl(GUEST_SYSENTER_EIP);
if (kvm_mpx_supported())
vmcs12->guest_bndcfgs = vmcs_read64(GUEST_BNDCFGS);
if (nested_cpu_has_xsaves(vmcs12))
vmcs12->xss_exit_bitmap = vmcs_read64(XSS_EXIT_BITMAP);
}
/*