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[Qemu-devel] [PATCH 4/5] target/i386: Enable TOPOEXT feature on AMD EPYC
From: |
Babu Moger |
Subject: |
[Qemu-devel] [PATCH 4/5] target/i386: Enable TOPOEXT feature on AMD EPYC CPU |
Date: |
Fri, 26 Jan 2018 16:39:43 -0500 |
Enable TOPOEXT feature on EPYC CPU. This is required to support
hyperthreading on VM guests. These are supported via
CPUID_8000_001E extended functions.
Signed-off-by: Babu Moger <address@hidden>
---
target/i386/cpu.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index 52591a1486..956ed112db 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -1557,7 +1557,8 @@ static X86CPUDefinition builtin_x86_defs[] = {
.features[FEAT_8000_0001_ECX] =
CPUID_EXT3_OSVW | CPUID_EXT3_3DNOWPREFETCH |
CPUID_EXT3_MISALIGNSSE | CPUID_EXT3_SSE4A | CPUID_EXT3_ABM |
- CPUID_EXT3_CR8LEG | CPUID_EXT3_SVM | CPUID_EXT3_LAHF_LM,
+ CPUID_EXT3_CR8LEG | CPUID_EXT3_SVM | CPUID_EXT3_LAHF_LM |
+ CPUID_EXT3_TOPOEXT,
.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 |
@@ -1572,7 +1573,7 @@ static X86CPUDefinition builtin_x86_defs[] = {
CPUID_XSAVE_XGETBV1,
.features[FEAT_6_EAX] =
CPUID_6_EAX_ARAT,
- .xlevel = 0x8000000A,
+ .xlevel = 0x8000001E,
.model_id = "AMD EPYC Processor",
},
};
--
2.16.0