diff options
Diffstat (limited to 'target/i386/kvm.c')
| -rw-r--r-- | target/i386/kvm.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/target/i386/kvm.c b/target/i386/kvm.c index 11b9c854b5..8c73438c67 100644 --- a/target/i386/kvm.c +++ b/target/i386/kvm.c @@ -1567,6 +1567,13 @@ int kvm_arch_init_vcpu(CPUState *cs) c->function = i; c->flags = 0; cpu_x86_cpuid(env, i, 0, &c->eax, &c->ebx, &c->ecx, &c->edx); + if (!c->eax && !c->ebx && !c->ecx && !c->edx) { + /* + * KVM already returns all zeroes if a CPUID entry is missing, + * so we can omit it and avoid hitting KVM's 80-entry limit. + */ + cpuid_i--; + } break; } } @@ -1631,6 +1638,13 @@ int kvm_arch_init_vcpu(CPUState *cs) c->function = i; c->flags = 0; cpu_x86_cpuid(env, i, 0, &c->eax, &c->ebx, &c->ecx, &c->edx); + if (!c->eax && !c->ebx && !c->ecx && !c->edx) { + /* + * KVM already returns all zeroes if a CPUID entry is missing, + * so we can omit it and avoid hitting KVM's 80-entry limit. + */ + cpuid_i--; + } break; } } |