diff options
| author | Sean Christopherson <sean.j.christopherson@intel.com> | 2020-03-03 00:56:22 +0100 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-03-16 17:58:08 +0100 |
| commit | 2ef7619d43731b6eaa7cc2e03d000e4bbc1bf612 (patch) | |
| tree | 5b893fea563c51e853eb3564ed9172920d405a4f /arch/x86/kvm/vmx/vmx.h | |
| parent | KVM: x86: Use common loop iterator when handling CPUID 0xD.N (diff) | |
| download | linux-2ef7619d43731b6eaa7cc2e03d000e4bbc1bf612.tar.xz linux-2ef7619d43731b6eaa7cc2e03d000e4bbc1bf612.zip | |
KVM: VMX: Add helpers to query Intel PT mode
Add helpers to query which of the (two) supported PT modes is active.
The primary motivation is to help document that there is a third PT mode
(host-only) that's currently not supported by KVM. As is, it's not
obvious that PT_MODE_SYSTEM != !PT_MODE_HOST_GUEST and vice versa, e.g.
that "pt_mode == PT_MODE_SYSTEM" and "pt_mode != PT_MODE_HOST_GUEST" are
two distinct checks.
No functional change intended.
Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/vmx/vmx.h')
| -rw-r--r-- | arch/x86/kvm/vmx/vmx.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/kvm/vmx/vmx.h b/arch/x86/kvm/vmx/vmx.h index e64da06c7009..9a51a3a77233 100644 --- a/arch/x86/kvm/vmx/vmx.h +++ b/arch/x86/kvm/vmx/vmx.h @@ -452,7 +452,7 @@ static inline void vmx_segment_cache_clear(struct vcpu_vmx *vmx) static inline u32 vmx_vmentry_ctrl(void) { u32 vmentry_ctrl = vmcs_config.vmentry_ctrl; - if (pt_mode == PT_MODE_SYSTEM) + if (vmx_pt_mode_is_system()) vmentry_ctrl &= ~(VM_ENTRY_PT_CONCEAL_PIP | VM_ENTRY_LOAD_IA32_RTIT_CTL); /* Loading of EFER and PERF_GLOBAL_CTRL are toggled dynamically */ @@ -463,7 +463,7 @@ static inline u32 vmx_vmentry_ctrl(void) static inline u32 vmx_vmexit_ctrl(void) { u32 vmexit_ctrl = vmcs_config.vmexit_ctrl; - if (pt_mode == PT_MODE_SYSTEM) + if (vmx_pt_mode_is_system()) vmexit_ctrl &= ~(VM_EXIT_PT_CONCEAL_PIP | VM_EXIT_CLEAR_IA32_RTIT_CTL); /* Loading of EFER and PERF_GLOBAL_CTRL are toggled dynamically */ |