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| author | Peter Maydell | 2019-12-06 16:05:20 +0100 |
|---|---|---|
| committer | Peter Maydell | 2019-12-06 16:05:20 +0100 |
| commit | 02f9c885edefae66d787847758d13ed60c0f539e (patch) | |
| tree | 10eacdea17c39e9a34dc9442387eb68a228ceb6b | |
| parent | Update version for v4.2.0-rc4 release (diff) | |
| parent | target/i386: disable VMX features if nested=0 (diff) | |
| download | qemu-02f9c885edefae66d787847758d13ed60c0f539e.tar.gz qemu-02f9c885edefae66d787847758d13ed60c0f539e.tar.xz qemu-02f9c885edefae66d787847758d13ed60c0f539e.zip | |
Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging
* fix for x86 KVM on older kernels (Yang Zhong)
# gpg: Signature made Fri 06 Dec 2019 11:36:08 GMT
# gpg: using RSA key F13338574B662389866C7682BFFBD25F78C7AE83
# gpg: issuer "pbonzini@redhat.com"
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" [full]
# gpg: aka "Paolo Bonzini <pbonzini@redhat.com>" [full]
# Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4 E2F7 7E15 100C CD36 69B1
# Subkey fingerprint: F133 3857 4B66 2389 866C 7682 BFFB D25F 78C7 AE83
* remotes/bonzini/tags/for-upstream:
target/i386: disable VMX features if nested=0
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
| -rw-r--r-- | target/i386/kvm.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/target/i386/kvm.c b/target/i386/kvm.c index bf1655645b..1d10046a6c 100644 --- a/target/i386/kvm.c +++ b/target/i386/kvm.c @@ -2572,6 +2572,14 @@ static void kvm_msr_entry_add_vmx(X86CPU *cpu, FeatureWordArray f) uint64_t kvm_vmx_basic = kvm_arch_get_supported_msr_feature(kvm_state, MSR_IA32_VMX_BASIC); + + if (!kvm_vmx_basic) { + /* If the kernel doesn't support VMX feature (kvm_intel.nested=0), + * then kvm_vmx_basic will be 0 and KVM_SET_MSR will fail. + */ + return; + } + uint64_t kvm_vmx_misc = kvm_arch_get_supported_msr_feature(kvm_state, MSR_IA32_VMX_MISC); |