diff options
| author | Xiaoyao Li <xiaoyao.li@linux.intel.com> | 2019-06-17 23:36:54 +0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2019-06-21 02:29:39 +0200 |
| commit | 597360c0d8ebda9ca6f239db724a25bddec62b2f (patch) | |
| tree | d81696ac228503128975daf650f1820cf0cae853 /target/i386/kvm.c | |
| parent | 128531d9e10908a08761ed1ce10e607985d172d7 (diff) | |
target/i386: define a new MSR based feature word - FEAT_CORE_CAPABILITY
MSR IA32_CORE_CAPABILITY is a feature-enumerating MSR, which only
enumerates the feature split lock detection (via bit 5) by now.
The existence of MSR IA32_CORE_CAPABILITY is enumerated by CPUID.7_0:EDX[30].
The latest kernel patches about them can be found here:
https://lkml.org/lkml/2019/4/24/1909
Signed-off-by: Xiaoyao Li <xiaoyao.li@linux.intel.com>
Message-Id: <20190617153654.916-1-xiaoyao.li@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'target/i386/kvm.c')
| -rw-r--r-- | target/i386/kvm.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/target/i386/kvm.c b/target/i386/kvm.c index a323b1f1c3..279f99a7f2 100644 --- a/target/i386/kvm.c +++ b/target/i386/kvm.c @@ -95,6 +95,7 @@ static bool has_msr_spec_ctrl; static bool has_msr_virt_ssbd; static bool has_msr_smi_count; static bool has_msr_arch_capabs; +static bool has_msr_core_capabs; static uint32_t has_architectural_pmu_version; static uint32_t num_architectural_pmu_gp_counters; @@ -1842,6 +1843,9 @@ static int kvm_get_supported_msrs(KVMState *s) case MSR_IA32_ARCH_CAPABILITIES: has_msr_arch_capabs = true; break; + case MSR_IA32_CORE_CAPABILITY: + has_msr_core_capabs = true; + break; } } } @@ -2368,6 +2372,11 @@ static int kvm_put_msrs(X86CPU *cpu, int level) env->features[FEAT_ARCH_CAPABILITIES]); } + if (has_msr_core_capabs) { + kvm_msr_entry_add(cpu, MSR_IA32_CORE_CAPABILITY, + env->features[FEAT_CORE_CAPABILITY]); + } + /* * The following MSRs have side effects on the guest or are too heavy * for normal writeback. Limit them to reset or full state updates. |