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[Qemu-devel] [PATCH] x86: Fix Opteron xlevels


From: Alexander Graf
Subject: [Qemu-devel] [PATCH] x86: Fix Opteron xlevels
Date: Tue, 21 Apr 2015 16:04:21 +0200

The AMD Opteron family has different xlevel levels depending on the
generation. I looked up Gen1, Gen2 and Gen3 hardware and adapted the
levels according to real silicon.

The reason this came up is that there is a sanity check in KVM making
sure that SVM is only used when xlevel is high enough. Using real
hardware levels, they now are.

Reported-by: Bernhard M. Wiedemann <address@hidden>
Signed-off-by: Alexander Graf <address@hidden>
---
 target-i386/cpu.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/target-i386/cpu.c b/target-i386/cpu.c
index 03b33cf..d1b1b8c 100644
--- a/target-i386/cpu.c
+++ b/target-i386/cpu.c
@@ -1234,7 +1234,7 @@ static X86CPUDefinition builtin_x86_defs[] = {
             CPUID_EXT2_MTRR | CPUID_EXT2_SYSCALL | CPUID_EXT2_APIC |
             CPUID_EXT2_CX8 | CPUID_EXT2_MCE | CPUID_EXT2_PAE | CPUID_EXT2_MSR |
             CPUID_EXT2_TSC | CPUID_EXT2_PSE | CPUID_EXT2_DE | CPUID_EXT2_FPU,
-        .xlevel = 0x80000008,
+        .xlevel = 0x80000018,
         .model_id = "AMD Opteron 240 (Gen 1 Class Opteron)",
     },
     {
@@ -1262,7 +1262,7 @@ static X86CPUDefinition builtin_x86_defs[] = {
             CPUID_EXT2_DE | CPUID_EXT2_FPU,
         .features[FEAT_8000_0001_ECX] =
             CPUID_EXT3_SVM | CPUID_EXT3_LAHF_LM,
-        .xlevel = 0x80000008,
+        .xlevel = 0x80000018,
         .model_id = "AMD Opteron 22xx (Gen 2 Class Opteron)",
     },
     {
@@ -1292,7 +1292,7 @@ static X86CPUDefinition builtin_x86_defs[] = {
         .features[FEAT_8000_0001_ECX] =
             CPUID_EXT3_MISALIGNSSE | CPUID_EXT3_SSE4A |
             CPUID_EXT3_ABM | CPUID_EXT3_SVM | CPUID_EXT3_LAHF_LM,
-        .xlevel = 0x80000008,
+        .xlevel = 0x8000001A,
         .model_id = "AMD Opteron 23xx (Gen 3 Class Opteron)",
     },
     {
-- 
1.7.12.4




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