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| author | Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com> | 2016-06-16 01:24:36 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2016-06-16 01:28:30 +0300 |
| commit | 5b8abf1f33ccd9f1cbc4248ade3cd507d9319c48 (patch) | |
| tree | 093f565820d608d4dc5c9d32e54cfb1274a3b12e /arch | |
| parent | 7d669f50847481c52faf0656aea7b4be63113210 (diff) | |
| download | linux-5b8abf1f33ccd9f1cbc4248ade3cd507d9319c48.tar.xz | |
kvm: svm: Do not support AVIC if not CONFIG_X86_LOCAL_APIC
Add logic to disable AVIC #ifndef CONFIG_X86_LOCAL_APIC.
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kvm/svm.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index 8a3c571e4a86..16ef31b87452 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -238,7 +238,9 @@ module_param(nested, int, S_IRUGO); /* enable / disable AVIC */ static int avic; +#ifdef CONFIG_X86_LOCAL_APIC module_param(avic, int, S_IRUGO); +#endif static void svm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0); static void svm_flush_tlb(struct kvm_vcpu *vcpu); @@ -981,11 +983,14 @@ static __init int svm_hardware_setup(void) } else kvm_disable_tdp(); - if (avic && (!npt_enabled || !boot_cpu_has(X86_FEATURE_AVIC))) - avic = false; - - if (avic) - pr_info("AVIC enabled\n"); + if (avic) { + if (!npt_enabled || + !boot_cpu_has(X86_FEATURE_AVIC) || + !IS_ENABLED(CONFIG_X86_LOCAL_APIC)) + avic = false; + else + pr_info("AVIC enabled\n"); + } return 0; |