Commit d923fcf6 authored Jun 01, 2017 by Jim Mattson Committed by Radim Krčmář Jun 07, 2017

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



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>

parent 4531662d

arch/x86/kvm/vmx.c

+0 −2

Original line number	Diff line number	Diff line
		@@ -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);
		}

		/*

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