Merge tag 'kvm-3.8-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm

[can-eth-gw-linux.git] / arch / x86 / kvm / vmx.c

diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index d14bb12356854ebf8dbe9af6e28b7c18c1849414..9120ae1901e42804828dbde5db41707c113b0cbc 100644 (file)
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -6625,19 +6625,22 @@ static void vmx_cpuid_update(struct kvm_vcpu *vcpu)
                }
        }
 
-       exec_control = vmcs_read32(SECONDARY_VM_EXEC_CONTROL);
        /* Exposing INVPCID only when PCID is exposed */
        best = kvm_find_cpuid_entry(vcpu, 0x7, 0);
        if (vmx_invpcid_supported() &&
            best && (best->ebx & bit(X86_FEATURE_INVPCID)) &&
            guest_cpuid_has_pcid(vcpu)) {
+               exec_control = vmcs_read32(SECONDARY_VM_EXEC_CONTROL);
                exec_control |= SECONDARY_EXEC_ENABLE_INVPCID;
                vmcs_write32(SECONDARY_VM_EXEC_CONTROL,
                             exec_control);
        } else {
-               exec_control &= ~SECONDARY_EXEC_ENABLE_INVPCID;
-               vmcs_write32(SECONDARY_VM_EXEC_CONTROL,
-                            exec_control);
+               if (cpu_has_secondary_exec_ctrls()) {
+                       exec_control = vmcs_read32(SECONDARY_VM_EXEC_CONTROL);
+                       exec_control &= ~SECONDARY_EXEC_ENABLE_INVPCID;
+                       vmcs_write32(SECONDARY_VM_EXEC_CONTROL,
+                                    exec_control);
+               }
                if (best)
                        best->ebx &= ~bit(X86_FEATURE_INVPCID);
        }