From ef202d64c3020f3df03c39d3ad688732d81aaae8 Mon Sep 17 00:00:00 2001 From: Xin Li Date: Wed, 8 Nov 2023 23:20:11 -0800 Subject: [PATCH] target/i386: enumerate VMX nested-exception support Allow VMX nested-exception support to be exposed in KVM guests, thus nested KVM guests can enumerate it. Tested-by: Shan Kang Signed-off-by: Xin Li Message-ID: <20231109072012.8078-6-xin3.li@intel.com> Signed-off-by: Paolo Bonzini --- scripts/kvm/vmxcap | 1 + target/i386/cpu.c | 1 + target/i386/cpu.h | 1 + 3 files changed, 3 insertions(+) diff --git a/scripts/kvm/vmxcap b/scripts/kvm/vmxcap index 44898d73c2..508be19c75 100755 --- a/scripts/kvm/vmxcap +++ b/scripts/kvm/vmxcap @@ -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, ), diff --git a/target/i386/cpu.c b/target/i386/cpu.c index bfb5a25e59..383230fa47 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -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, diff --git a/target/i386/cpu.h b/target/i386/cpu.h index 9a582218f4..8ff27e933d 100644 --- a/target/i386/cpu.h +++ b/target/i386/cpu.h @@ -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)