KVM: nVMX: Advertise IA32_PAT in VM exit control

Advertise VM_EXIT_SAVE_IA32_PAT and VM_EXIT_LOAD_IA32_PAT.

Signed-off-by: Arthur Chunqi Li <yzt356@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 5 insertions, 3 deletions

diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index d9d0a94eb509..57b4e129891a 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -2196,13 +2196,15 @@ static __init void nested_vmx_setup_ctls_msrs(void)
          * If bit 55 of VMX_BASIC is off, bits 0-8 and 10, 11, 13, 14, 16 and
          * 17 must be 1.
          */
+        rdmsr(MSR_IA32_VMX_EXIT_CTLS,
+                nested_vmx_exit_ctls_low, nested_vmx_exit_ctls_high);
         nested_vmx_exit_ctls_low = VM_EXIT_ALWAYSON_WITHOUT_TRUE_MSR;
         /* Note that guest use of VM_EXIT_ACK_INTR_ON_EXIT is not supported. */
+        nested_vmx_exit_ctls_high &=
 #ifdef CONFIG_X86_64
-        nested_vmx_exit_ctls_high = VM_EXIT_HOST_ADDR_SPACE_SIZE;
-#else
-        nested_vmx_exit_ctls_high = 0;
+                VM_EXIT_HOST_ADDR_SPACE_SIZE |
 #endif
+                VM_EXIT_LOAD_IA32_PAT | VM_EXIT_SAVE_IA32_PAT;
         nested_vmx_exit_ctls_high |= (VM_EXIT_ALWAYSON_WITHOUT_TRUE_MSR |
                                       VM_EXIT_LOAD_IA32_EFER);