diff options
| author | Oliver Upton <oupton@google.com> | 2019-11-13 16:17:16 -0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2019-11-15 11:44:13 +0100 |
| commit | bfc6ad6ab3563b4151bbcfe162c612930a3e0854 (patch) | |
| tree | 27639d937dfb38ed2e91191ba3ded0d4768f2127 | |
| parent | 9477f4449b0b011ce1d058c09ec450bfcdaab784 (diff) | |
| download | linux-bfc6ad6ab3563b4151bbcfe162c612930a3e0854.tar.gz | |
KVM: nVMX: Check GUEST_IA32_PERF_GLOBAL_CTRL on VM-Entry
Add condition to nested_vmx_check_guest_state() to check the validity of GUEST_IA32_PERF_GLOBAL_CTRL. Per Intel's SDM Vol 3 26.3.1.1: If the "load IA32_PERF_GLOBAL_CTRL" VM-entry control is 1, bits reserved in the IA32_PERF_GLOBAL_CTRL MSR must be 0 in the field for that register. Suggested-by: Jim Mattson <jmattson@google.com> Co-developed-by: Krish Sadhukhan <krish.sadhukhan@oracle.com> Signed-off-by: Krish Sadhukhan <krish.sadhukhan@oracle.com> Signed-off-by: Oliver Upton <oupton@google.com> Reviewed-by: Jim Mattson <jmattson@google.com> Reviewed-by: Peter Shier <pshier@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| -rw-r--r-- | arch/x86/kvm/vmx/nested.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/x86/kvm/vmx/nested.c b/arch/x86/kvm/vmx/nested.c index bdb9b3028250..9190da3579c4 100644 --- a/arch/x86/kvm/vmx/nested.c +++ b/arch/x86/kvm/vmx/nested.c @@ -10,6 +10,7 @@ #include "hyperv.h" #include "mmu.h" #include "nested.h" +#include "pmu.h" #include "trace.h" #include "x86.h" @@ -2790,6 +2791,11 @@ static int nested_vmx_check_guest_state(struct kvm_vcpu *vcpu, return -EINVAL; } + if ((vmcs12->vm_entry_controls & VM_ENTRY_LOAD_IA32_PERF_GLOBAL_CTRL) && + CC(!kvm_valid_perf_global_ctrl(vcpu_to_pmu(vcpu), + vmcs12->guest_ia32_perf_global_ctrl))) + return -EINVAL; + /* * If the load IA32_EFER VM-entry control is 1, the following checks * are performed on the field for the IA32_EFER MSR: |