From: Stanislav Lanci <pixo@xxxxxxxxxxxx>
Populate threads/core_id/apic_ids/socket_id when CPUID_EXT3_TOPOEXT
feature is supported. This is required to support hyperthreading feature
on AMD CPUs. This is supported via CPUID_8000_001E extended functions.
Signed-off-by: Stanislav Lanci <pixo@xxxxxxxxxxxx>
Signed-off-by: Babu Moger <babu.moger@xxxxxxx>
---
target/i386/cpu.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index 1485175..555ab83 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -3666,6 +3666,15 @@ void cpu_x86_cpuid(CPUX86State *env, uint32_t index, uint32_t count,
*edx = 0;
}
break;
+ case 0x8000001E:
+ if (env->features[FEAT_8000_0001_ECX] & CPUID_EXT3_TOPOEXT) {
+ assert(cpu->core_id <= 255);
+ *eax = cpu->apic_id;
+ *ebx = (cs->nr_threads - 1) << 8 | cpu->core_id;
+ *ecx = cpu->socket_id;
+ *edx = 0;
+ }
+ break;
case 0xC0000000:
*eax = env->cpuid_xlevel2;
*ebx = 0;
--
1.8.3.1
