diff options
| author | Sean Christopherson <sean.j.christopherson@intel.com> | 2020-03-02 15:56:38 -0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-03-16 17:58:20 +0100 |
| commit | dbd068040c64162fbbfa278eb63ef64704190612 (patch) | |
| tree | c8887e9137599f73fee9cd5cff48f4d0f07a2d52 /arch | |
| parent | 733deafc00df1dda5130fc14f87a1d3993913243 (diff) | |
KVM: x86: Handle Intel PT CPUID adjustment in VMX code
Move the Processor Trace CPUID adjustment into VMX code to eliminate
an instance of the undesirable "unsigned f_* = *_supported ? F(*) : 0"
pattern in the common CPUID handling code, and to pave the way toward
eventually removing ->pt_supported().
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')
| -rw-r--r-- | arch/x86/kvm/cpuid.c | 3 | ||||
| -rw-r--r-- | arch/x86/kvm/vmx/vmx.c | 3 |
2 files changed, 4 insertions, 2 deletions
diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c index 9a930ec6912d..26955c724571 100644 --- a/arch/x86/kvm/cpuid.c +++ b/arch/x86/kvm/cpuid.c @@ -331,7 +331,6 @@ static int __do_cpuid_func_emulated(struct kvm_cpuid_array *array, u32 func) static inline void do_cpuid_7_mask(struct kvm_cpuid_entry2 *entry) { - unsigned f_intel_pt = kvm_x86_ops->pt_supported() ? F(INTEL_PT) : 0; unsigned f_la57; /* cpuid 7.0.ebx */ @@ -340,7 +339,7 @@ static inline void do_cpuid_7_mask(struct kvm_cpuid_entry2 *entry) F(BMI2) | F(ERMS) | 0 /*INVPCID*/ | F(RTM) | 0 /*MPX*/ | F(RDSEED) | F(ADX) | F(SMAP) | F(AVX512IFMA) | F(AVX512F) | F(AVX512PF) | F(AVX512ER) | F(AVX512CD) | F(CLFLUSHOPT) | F(CLWB) | F(AVX512DQ) | - F(SHA_NI) | F(AVX512BW) | F(AVX512VL) | f_intel_pt; + F(SHA_NI) | F(AVX512BW) | F(AVX512VL) | 0 /*INTEL_PT*/; /* cpuid 7.0.ecx*/ const u32 kvm_cpuid_7_0_ecx_x86_features = diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c index fae2d4438086..bf27cb8ac3fc 100644 --- a/arch/x86/kvm/vmx/vmx.c +++ b/arch/x86/kvm/vmx/vmx.c @@ -7135,6 +7135,9 @@ static void vmx_set_supported_cpuid(struct kvm_cpuid_entry2 *entry) cpuid_entry_set(entry, X86_FEATURE_MPX); if (boot_cpu_has(X86_FEATURE_INVPCID) && cpu_has_vmx_invpcid()) cpuid_entry_set(entry, X86_FEATURE_INVPCID); + if (boot_cpu_has(X86_FEATURE_INTEL_PT) && + vmx_pt_mode_is_host_guest()) + cpuid_entry_set(entry, X86_FEATURE_INTEL_PT); if (vmx_umip_emulated()) cpuid_entry_set(entry, X86_FEATURE_UMIP); |