diff mbox series

[v3,1/3] i386/cpuid: Decrease cpuid_i when skipping CPUID leaf 1F

Message ID 20240125024016.2521244-2-xiaoyao.li@intel.com (mailing list archive)
State New, archived
Headers show
Series i386: Minor fixes for building CPUIDs | expand

Commit Message

Xiaoyao Li Jan. 25, 2024, 2:40 a.m. UTC 
Existing code misses a decrement of cpuid_i when skip leaf 0x1F.
There's a blank CPUID entry(with leaf, subleaf as 0, and all fields
stuffed 0s) left in the CPUID array.

It conflicts with correct CPUID leaf 0.

Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com>
Reviewed-by:Yang Weijiang <weijiang.yang@intel.com>
---
 target/i386/kvm/kvm.c | 1 +
 1 file changed, 1 insertion(+)
diff mbox series

Patch

diff --git a/target/i386/kvm/kvm.c b/target/i386/kvm/kvm.c
index 76a66246eb72..dff9dedbd761 100644
--- a/target/i386/kvm/kvm.c
+++ b/target/i386/kvm/kvm.c
@@ -1914,6 +1914,7 @@  int kvm_arch_init_vcpu(CPUState *cs)
         }
         case 0x1f:
             if (env->nr_dies < 2) {
+                cpuid_i--;
                 break;
             }
             /* fallthrough */