[PATCH] i386: pass CLZERO to guests with EPYC CPU model on AMD ZEN platform

[Ani Sinha]

CLZERO CPUID should be passed on to the guests that use EPYC or EPYC-IBPB CPU
model when the AMD ZEN based host supports it. This change makes it recognize
this CPUID for guests which use EPYC or EPYC-IBPB CPU model.

Signed-off-by: Ani Sinha <address@hidden>
---
 target/i386/cpu.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index 69f518a..55f0691 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -3813,6 +3813,8 @@ static X86CPUDefinition builtin_x86_defs[] = {
             CPUID_EXT3_MISALIGNSSE | CPUID_EXT3_SSE4A | CPUID_EXT3_ABM |
             CPUID_EXT3_CR8LEG | CPUID_EXT3_SVM | CPUID_EXT3_LAHF_LM |
             CPUID_EXT3_TOPOEXT,
+        .features[FEAT_8000_0008_EBX] =
+            CPUID_8000_0008_EBX_CLZERO,
         .features[FEAT_7_0_EBX] =
             CPUID_7_0_EBX_FSGSBASE | CPUID_7_0_EBX_BMI1 | CPUID_7_0_EBX_AVX2 |
             CPUID_7_0_EBX_SMEP | CPUID_7_0_EBX_BMI2 | CPUID_7_0_EBX_RDSEED |
-- 
1.9.4