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Revert "target-i386: Disable HLE and RTM on Haswell & Broadwell"

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This reverts commit 13704e4c455770d500d6b87b117e32f0d01252c9.

With the Intel microcode update that removed HLE and RTM, there will be
different kinds of Haswell and Broadwell CPUs out there: some that still
have the HLE and RTM features, and some that don't have the HLE and RTM
features. On both cases people may be willing to use the pc-*-2.3
machine-types.

So instead of making the CPU model results confusing by making it depend
on the machine-type, keep HLE and RTM on the existing Haswell and
Broadwell CPU models. The plan is to introduce "Haswell-noTSX" and
"Broadwell-noTSX" CPU models later, for people who have CPUs that don't
have TSX feature available.

Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
This commit is contained in:
Eduardo Habkost 2015-03-13 15:39:43 -03:00
parent 3e5f6234b4
commit 1ee9159882
3 changed files with 5 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
hw/i386/pc_piix.c
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@ -331,10 +331,6 @@ static void pc_compat_2_2(MachineState *machine)
x86_cpu_compat_set_features("Haswell", FEAT_1_ECX, 0, CPUID_EXT_RDRAND);
x86_cpu_compat_set_features("Broadwell", FEAT_1_ECX, 0, CPUID_EXT_F16C);
x86_cpu_compat_set_features("Broadwell", FEAT_1_ECX, 0, CPUID_EXT_RDRAND);
x86_cpu_compat_set_features("Haswell", FEAT_7_0_EBX,
CPUID_7_0_EBX_HLE | CPUID_7_0_EBX_RTM, 0);
x86_cpu_compat_set_features("Broadwell", FEAT_7_0_EBX,
CPUID_7_0_EBX_HLE | CPUID_7_0_EBX_RTM, 0);
machine->suppress_vmdesc = true;
}

4
hw/i386/pc_q35.c
View File

@ -310,10 +310,6 @@ static void pc_compat_2_2(MachineState *machine)
x86_cpu_compat_set_features("Haswell", FEAT_1_ECX, 0, CPUID_EXT_RDRAND);
x86_cpu_compat_set_features("Broadwell", FEAT_1_ECX, 0, CPUID_EXT_F16C);
x86_cpu_compat_set_features("Broadwell", FEAT_1_ECX, 0, CPUID_EXT_RDRAND);
x86_cpu_compat_set_features("Haswell", FEAT_7_0_EBX,
CPUID_7_0_EBX_HLE | CPUID_7_0_EBX_RTM, 0);
x86_cpu_compat_set_features("Broadwell", FEAT_7_0_EBX,
CPUID_7_0_EBX_HLE | CPUID_7_0_EBX_RTM, 0);
machine->suppress_vmdesc = true;
}

9
target-i386/cpu.c
View File

@ -1099,8 +1099,9 @@ static X86CPUDefinition builtin_x86_defs[] = {
CPUID_EXT3_LAHF_LM,
.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_ERMS | CPUID_7_0_EBX_INVPCID,
CPUID_7_0_EBX_HLE | CPUID_7_0_EBX_AVX2 | CPUID_7_0_EBX_SMEP |
CPUID_7_0_EBX_BMI2 | CPUID_7_0_EBX_ERMS | CPUID_7_0_EBX_INVPCID |
CPUID_7_0_EBX_RTM,
.features[FEAT_XSAVE] =
CPUID_XSAVE_XSAVEOPT,
.xlevel = 0x8000000A,
@ -1133,9 +1134,9 @@ static X86CPUDefinition builtin_x86_defs[] = {
CPUID_EXT3_LAHF_LM | CPUID_EXT3_3DNOWPREFETCH,
.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_HLE | CPUID_7_0_EBX_AVX2 | CPUID_7_0_EBX_SMEP |
CPUID_7_0_EBX_BMI2 | CPUID_7_0_EBX_ERMS | CPUID_7_0_EBX_INVPCID |
CPUID_7_0_EBX_RDSEED | CPUID_7_0_EBX_ADX |
CPUID_7_0_EBX_RTM | CPUID_7_0_EBX_RDSEED | CPUID_7_0_EBX_ADX |
CPUID_7_0_EBX_SMAP,
.features[FEAT_XSAVE] =
CPUID_XSAVE_XSAVEOPT,