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[Qemu-devel] [PULL 3/3] target-i386: emulate CPUID level of real hardwar
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From: |
Eduardo Habkost |
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Subject: |
[Qemu-devel] [PULL 3/3] target-i386: emulate CPUID level of real hardware |
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Date: |
Fri, 3 Jul 2015 17:47:39 -0300 |
From: Radim Krčmář <address@hidden>
W10 insider has a bug where it ignores CPUID level and interprets
CPUID.(EAX=07H, ECX=0H) incorrectly, because CPUID in fact returned
CPUID.(EAX=04H, ECX=0H); this resulted in execution of unsupported
instructions.
While it's a Windows bug, there is no reason to emulate incorrect level.
I used http://instlatx64.atw.hu/ as a source of CPUID and checked that
it matches Penryn Xeon X5472, Westmere Xeon W3520, SandyBridge i5-2540M,
and Haswell i5-4670T.
kvm64 and qemu64 were bumped to 0xD to allow all available features for
them (and to avoid the same Windows bug).
Signed-off-by: Radim Krčmář <address@hidden>
Reviewed-by: Eduardo Habkost <address@hidden>
Signed-off-by: Eduardo Habkost <address@hidden>
---
include/hw/compat.h | 70 ++++++++++++++++++++++++++++++++++++++++++++++++++++-
target-i386/cpu.c | 37 ++++++++++++++--------------
2 files changed, 87 insertions(+), 20 deletions(-)
diff --git a/include/hw/compat.h b/include/hw/compat.h
index 4a43466..55cfcd5 100644
--- a/include/hw/compat.h
+++ b/include/hw/compat.h
@@ -2,7 +2,75 @@
#define HW_COMPAT_H
#define HW_COMPAT_2_3 \
- /* empty */
+ {\
+ .driver = "qemu64" "-" TYPE_X86_CPU,\
+ .property = "level",\
+ .value = stringify(4),\
+ },{\
+ .driver = "kvm64" "-" TYPE_X86_CPU,\
+ .property = "level",\
+ .value = stringify(5),\
+ },{\
+ .driver = "pentium3" "-" TYPE_X86_CPU,\
+ .property = "level",\
+ .value = stringify(2),\
+ },{\
+ .driver = "n270" "-" TYPE_X86_CPU,\
+ .property = "level",\
+ .value = stringify(5),\
+ },{\
+ .driver = "Conroe" "-" TYPE_X86_CPU,\
+ .property = "level",\
+ .value = stringify(4),\
+ },{\
+ .driver = "Penryn" "-" TYPE_X86_CPU,\
+ .property = "level",\
+ .value = stringify(4),\
+ },{\
+ .driver = "Nehalem" "-" TYPE_X86_CPU,\
+ .property = "level",\
+ .value = stringify(4),\
+ },{\
+ .driver = "n270" "-" TYPE_X86_CPU,\
+ .property = "xlevel",\
+ .value = stringify(0x8000000a),\
+ },{\
+ .driver = "Penryn" "-" TYPE_X86_CPU,\
+ .property = "xlevel",\
+ .value = stringify(0x8000000a),\
+ },{\
+ .driver = "Conroe" "-" TYPE_X86_CPU,\
+ .property = "xlevel",\
+ .value = stringify(0x8000000a),\
+ },{\
+ .driver = "Nehalem" "-" TYPE_X86_CPU,\
+ .property = "xlevel",\
+ .value = stringify(0x8000000a),\
+ },{\
+ .driver = "Westmere" "-" TYPE_X86_CPU,\
+ .property = "xlevel",\
+ .value = stringify(0x8000000a),\
+ },{\
+ .driver = "SandyBridge" "-" TYPE_X86_CPU,\
+ .property = "xlevel",\
+ .value = stringify(0x8000000a),\
+ },{\
+ .driver = "Haswell" "-" TYPE_X86_CPU,\
+ .property = "xlevel",\
+ .value = stringify(0x8000000a),\
+ },{\
+ .driver = "Haswell-noTSX" "-" TYPE_X86_CPU,\
+ .property = "xlevel",\
+ .value = stringify(0x8000000a),\
+ },{\
+ .driver = "Broadwell" "-" TYPE_X86_CPU,\
+ .property = "xlevel",\
+ .value = stringify(0x8000000a),\
+ },{\
+ .driver = "Broadwell-noTSX" "-" TYPE_X86_CPU,\
+ .property = "xlevel",\
+ .value = stringify(0x8000000a),\
+ },
#define HW_COMPAT_2_2 \
/* empty */
diff --git a/target-i386/cpu.c b/target-i386/cpu.c
index b4f9461..dfae721 100644
--- a/target-i386/cpu.c
+++ b/target-i386/cpu.c
@@ -695,7 +695,7 @@ struct X86CPUDefinition {
static X86CPUDefinition builtin_x86_defs[] = {
{
.name = "qemu64",
- .level = 4,
+ .level = 0xd,
.vendor = CPUID_VENDOR_AMD,
.family = 6,
.model = 6,
@@ -771,7 +771,7 @@ static X86CPUDefinition builtin_x86_defs[] = {
},
{
.name = "kvm64",
- .level = 5,
+ .level = 0xd,
.vendor = CPUID_VENDOR_INTEL,
.family = 15,
.model = 6,
@@ -882,7 +882,7 @@ static X86CPUDefinition builtin_x86_defs[] = {
},
{
.name = "pentium3",
- .level = 2,
+ .level = 3,
.vendor = CPUID_VENDOR_INTEL,
.family = 6,
.model = 7,
@@ -907,8 +907,7 @@ static X86CPUDefinition builtin_x86_defs[] = {
},
{
.name = "n270",
- /* original is on level 10 */
- .level = 5,
+ .level = 10,
.vendor = CPUID_VENDOR_INTEL,
.family = 6,
.model = 28,
@@ -928,12 +927,12 @@ static X86CPUDefinition builtin_x86_defs[] = {
CPUID_EXT2_NX,
.features[FEAT_8000_0001_ECX] =
CPUID_EXT3_LAHF_LM,
- .xlevel = 0x8000000A,
+ .xlevel = 0x80000008,
.model_id = "Intel(R) Atom(TM) CPU N270 @ 1.60GHz",
},
{
.name = "Conroe",
- .level = 4,
+ .level = 10,
.vendor = CPUID_VENDOR_INTEL,
.family = 6,
.model = 15,
@@ -950,12 +949,12 @@ static X86CPUDefinition builtin_x86_defs[] = {
CPUID_EXT2_LM | CPUID_EXT2_NX | CPUID_EXT2_SYSCALL,
.features[FEAT_8000_0001_ECX] =
CPUID_EXT3_LAHF_LM,
- .xlevel = 0x8000000A,
+ .xlevel = 0x80000008,
.model_id = "Intel Celeron_4x0 (Conroe/Merom Class Core 2)",
},
{
.name = "Penryn",
- .level = 4,
+ .level = 10,
.vendor = CPUID_VENDOR_INTEL,
.family = 6,
.model = 23,
@@ -973,12 +972,12 @@ static X86CPUDefinition builtin_x86_defs[] = {
CPUID_EXT2_LM | CPUID_EXT2_NX | CPUID_EXT2_SYSCALL,
.features[FEAT_8000_0001_ECX] =
CPUID_EXT3_LAHF_LM,
- .xlevel = 0x8000000A,
+ .xlevel = 0x80000008,
.model_id = "Intel Core 2 Duo P9xxx (Penryn Class Core 2)",
},
{
.name = "Nehalem",
- .level = 4,
+ .level = 11,
.vendor = CPUID_VENDOR_INTEL,
.family = 6,
.model = 26,
@@ -996,7 +995,7 @@ static X86CPUDefinition builtin_x86_defs[] = {
CPUID_EXT2_LM | CPUID_EXT2_SYSCALL | CPUID_EXT2_NX,
.features[FEAT_8000_0001_ECX] =
CPUID_EXT3_LAHF_LM,
- .xlevel = 0x8000000A,
+ .xlevel = 0x80000008,
.model_id = "Intel Core i7 9xx (Nehalem Class Core i7)",
},
{
@@ -1022,7 +1021,7 @@ static X86CPUDefinition builtin_x86_defs[] = {
CPUID_EXT3_LAHF_LM,
.features[FEAT_6_EAX] =
CPUID_6_EAX_ARAT,
- .xlevel = 0x8000000A,
+ .xlevel = 0x80000008,
.model_id = "Westmere E56xx/L56xx/X56xx (Nehalem-C)",
},
{
@@ -1053,7 +1052,7 @@ static X86CPUDefinition builtin_x86_defs[] = {
CPUID_XSAVE_XSAVEOPT,
.features[FEAT_6_EAX] =
CPUID_6_EAX_ARAT,
- .xlevel = 0x8000000A,
+ .xlevel = 0x80000008,
.model_id = "Intel Xeon E312xx (Sandy Bridge)",
},
{
@@ -1087,7 +1086,7 @@ static X86CPUDefinition builtin_x86_defs[] = {
CPUID_XSAVE_XSAVEOPT,
.features[FEAT_6_EAX] =
CPUID_6_EAX_ARAT,
- .xlevel = 0x8000000A,
+ .xlevel = 0x80000008,
.model_id = "Intel Xeon E3-12xx v2 (Ivy Bridge)",
},
{
@@ -1123,7 +1122,7 @@ static X86CPUDefinition builtin_x86_defs[] = {
CPUID_XSAVE_XSAVEOPT,
.features[FEAT_6_EAX] =
CPUID_6_EAX_ARAT,
- .xlevel = 0x8000000A,
+ .xlevel = 0x80000008,
.model_id = "Intel Core Processor (Haswell, no TSX)",
}, {
.name = "Haswell",
@@ -1159,7 +1158,7 @@ static X86CPUDefinition builtin_x86_defs[] = {
CPUID_XSAVE_XSAVEOPT,
.features[FEAT_6_EAX] =
CPUID_6_EAX_ARAT,
- .xlevel = 0x8000000A,
+ .xlevel = 0x80000008,
.model_id = "Intel Core Processor (Haswell)",
},
{
@@ -1197,7 +1196,7 @@ static X86CPUDefinition builtin_x86_defs[] = {
CPUID_XSAVE_XSAVEOPT,
.features[FEAT_6_EAX] =
CPUID_6_EAX_ARAT,
- .xlevel = 0x8000000A,
+ .xlevel = 0x80000008,
.model_id = "Intel Core Processor (Broadwell, no TSX)",
},
{
@@ -1235,7 +1234,7 @@ static X86CPUDefinition builtin_x86_defs[] = {
CPUID_XSAVE_XSAVEOPT,
.features[FEAT_6_EAX] =
CPUID_6_EAX_ARAT,
- .xlevel = 0x8000000A,
+ .xlevel = 0x80000008,
.model_id = "Intel Core Processor (Broadwell)",
},
{
--
2.1.0
- [Qemu-devel] [PULL 0/3] X86 queue, 2015-07-03, Eduardo Habkost, 2015/07/03
- [Qemu-devel] [PULL 1/3] i386: Introduce ARAT CPU feature, Eduardo Habkost, 2015/07/03
- [Qemu-devel] [PULL 2/3] target-i386: avoid overflow in the tsc-frequency property, Eduardo Habkost, 2015/07/03
- [Qemu-devel] [PULL 3/3] target-i386: emulate CPUID level of real hardware,
Eduardo Habkost <=
- Re: [Qemu-devel] [PULL 0/3] X86 queue, 2015-07-03, Andreas Färber, 2015/07/03
- Re: [Qemu-devel] [PULL 0/3] X86 queue, 2015-07-03, Peter Maydell, 2015/07/05