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target/i386: enumerate VMX nested-exception support

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Allow VMX nested-exception support to be exposed in KVM guests, thus
nested KVM guests can enumerate it.

Tested-by: Shan Kang <shan.kang@intel.com>
Signed-off-by: Xin Li <xin3.li@intel.com>
Message-ID: <20231109072012.8078-6-xin3.li@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Xin Li 2023-11-08 23:20:11 -08:00 committed by Paolo Bonzini
parent 2e64187017
commit ef202d64c3
3 changed files with 3 additions and 0 deletions
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1
scripts/kvm/vmxcap
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@ -117,6 +117,7 @@ controls = [
54: 'INS/OUTS instruction information',
55: 'IA32_VMX_TRUE_*_CTLS support',
56: 'Skip checks on event error code',
58: 'VMX nested exception support',
},
msr = MSR_IA32_VMX_BASIC,
),

1
target/i386/cpu.c
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@ -1492,6 +1492,7 @@ FeatureWordInfo feature_word_info[FEATURE_WORDS] = {
[54] = "vmx-ins-outs",
[55] = "vmx-true-ctls",
[56] = "vmx-any-errcode",
[58] = "vmx-nested-exception",
},
.msr = {
.index = MSR_IA32_VMX_BASIC,

1
target/i386/cpu.h
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@ -1071,6 +1071,7 @@ uint64_t x86_cpu_get_supported_feature_word(FeatureWord w,
#define MSR_VMX_BASIC_INS_OUTS (1ULL << 54)
#define MSR_VMX_BASIC_TRUE_CTLS (1ULL << 55)
#define MSR_VMX_BASIC_ANY_ERRCODE (1ULL << 56)
#define MSR_VMX_BASIC_NESTED_EXCEPTION (1ULL << 58)
#define MSR_VMX_MISC_PREEMPTION_TIMER_SHIFT_MASK 0x1Full
#define MSR_VMX_MISC_STORE_LMA (1ULL << 5)