From: Jim Mattson <jmattson@google.com>
Date: Thu, 1 Jun 2017 12:43:37 -0700
Subject: KVM: nVMX: Don't update vmcs12->xss_exit_bitmap on nested VM-exit
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Patch-mainline: v4.13-rc1
Git-commit: d923fcf6361da3b8b25b13ce6c1e427e759f125a
References: bsc#1077761

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>
Acked-by: Alexander Graf <agraf@suse.de>
---
 arch/x86/kvm/vmx.c |    2 --
 1 file changed, 2 deletions(-)

--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -10733,8 +10733,6 @@
 	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);
 }
 
 /*