| Message ID | 1575452190-105002-1-git-send-email-ani.sinha@nutanix.com |
|---|---|
| State | New |
| Headers | show |
| Series | i386: pass CLZERO to guests with EPYC CPU model on AMD ZEN platform | expand |
Hi :
Can I get some love for this patch?
thanks
ani
On Dec 4, 2019, 3:06 PM +0530, Ani Sinha <ani.sinha@nutanix.com>, wrote:
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 <ani.sinha@nutanix.com>
---
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
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 |
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 <ani.sinha@nutanix.com> --- target/i386/cpu.c | 2 ++ 1 file changed, 2 insertions(+)