diff options
Diffstat (limited to 'arch/x86/include/asm/kvm_para.h')
-rw-r--r-- | arch/x86/include/asm/kvm_para.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/include/asm/kvm_para.h b/arch/x86/include/asm/kvm_para.h index 734c3767cfac..183922e13de1 100644 --- a/arch/x86/include/asm/kvm_para.h +++ b/arch/x86/include/asm/kvm_para.h | |||
@@ -170,6 +170,9 @@ static inline int kvm_para_available(void) | |||
170 | unsigned int eax, ebx, ecx, edx; | 170 | unsigned int eax, ebx, ecx, edx; |
171 | char signature[13]; | 171 | char signature[13]; |
172 | 172 | ||
173 | if (boot_cpu_data.cpuid_level < 0) | ||
174 | return 0; /* So we don't blow up on old processors */ | ||
175 | |||
173 | cpuid(KVM_CPUID_SIGNATURE, &eax, &ebx, &ecx, &edx); | 176 | cpuid(KVM_CPUID_SIGNATURE, &eax, &ebx, &ecx, &edx); |
174 | memcpy(signature + 0, &ebx, 4); | 177 | memcpy(signature + 0, &ebx, 4); |
175 | memcpy(signature + 4, &ecx, 4); | 178 | memcpy(signature + 4, &ecx, 4); |