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authorVitaly Kuznetsov <vkuznets@redhat.com>2022-01-12 18:01:30 +0100
committerPaolo Bonzini <pbonzini@redhat.com>2022-01-28 07:38:25 -0500
commitf80ae0ef089a09e8c18da43a382c3caac9a424a7 (patch)
tree644b5dfe4f06055bc0de99aee30f223c96acd5fd
parentb19c99b9f4486f23e3b7248dd4ce3d83e19b9032 (diff)
downloadlinux-f80ae0ef089a09e8c18da43a382c3caac9a424a7.tar.bz2
KVM: nVMX: Also filter MSR_IA32_VMX_TRUE_PINBASED_CTLS when eVMCS
Similar to MSR_IA32_VMX_EXIT_CTLS/MSR_IA32_VMX_TRUE_EXIT_CTLS, MSR_IA32_VMX_ENTRY_CTLS/MSR_IA32_VMX_TRUE_ENTRY_CTLS pair, MSR_IA32_VMX_TRUE_PINBASED_CTLS needs to be filtered the same way MSR_IA32_VMX_PINBASED_CTLS is currently filtered as guests may solely rely on 'true' MSR data. Note, none of the currently existing Windows/Hyper-V versions are known to stumble upon the unfiltered MSR_IA32_VMX_TRUE_PINBASED_CTLS, the change is aimed at making the filtering future proof. Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com> Message-Id: <20220112170134.1904308-2-vkuznets@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
-rw-r--r--arch/x86/kvm/vmx/evmcs.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/kvm/vmx/evmcs.c b/arch/x86/kvm/vmx/evmcs.c
index ba6f99f584ac..a7ed30d5647a 100644
--- a/arch/x86/kvm/vmx/evmcs.c
+++ b/arch/x86/kvm/vmx/evmcs.c
@@ -362,6 +362,7 @@ void nested_evmcs_filter_control_msr(u32 msr_index, u64 *pdata)
case MSR_IA32_VMX_PROCBASED_CTLS2:
ctl_high &= ~EVMCS1_UNSUPPORTED_2NDEXEC;
break;
+ case MSR_IA32_VMX_TRUE_PINBASED_CTLS:
case MSR_IA32_VMX_PINBASED_CTLS:
ctl_high &= ~EVMCS1_UNSUPPORTED_PINCTRL;
break;