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target-i386: add ABM to Haswell* and Broadwell* CPU models

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ABM is only implemented as a single instruction set by AMD; all AMD
processors support both instructions or neither. Intel considers POPCNT
as part of SSE4.2, and LZCNT as part of BMI1, but Intel also uses AMD's
ABM flag to indicate support for both POPCNT and LZCNT. It has to be
added to Haswell and Broadwell because Haswell, by adding LZCNT, has
completed the ABM.

Tested with "qemu-kvm -cpu Haswell-noTSX,enforce" (and also with older
machine types) on an Haswell-EP machine.

Backports commit becb66673ec30cb604926d247ab9449a60ad8b11 from qemu
This commit is contained in:
Paolo Bonzini 2018-02-16 00:30:47 -05:00 committed by Lioncash
parent 5b14f0ed52
commit 96e0535c76
No known key found for this signature in database
GPG Key ID: 4E3C3CC1031BA9C7
1 changed files with 4 additions and 4 deletions
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8
qemu/target-i386/cpu.c
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@ -1131,7 +1131,7 @@ static X86CPUDefinition builtin_x86_defs[] = {
CPUID_EXT2_LM | CPUID_EXT2_RDTSCP | CPUID_EXT2_NX |
CPUID_EXT2_SYSCALL,
// FEAT_8000_0001_ECX
CPUID_EXT3_LAHF_LM,
CPUID_EXT3_ABM | CPUID_EXT3_LAHF_LM,
// FEAT_8000_0007_EDX
0,
// FEAT_C000_0001_EDX
@ -1175,7 +1175,7 @@ static X86CPUDefinition builtin_x86_defs[] = {
CPUID_EXT2_LM | CPUID_EXT2_RDTSCP | CPUID_EXT2_NX |
CPUID_EXT2_SYSCALL,
// FEAT_8000_0001_ECX
CPUID_EXT3_LAHF_LM,
CPUID_EXT3_ABM | CPUID_EXT3_LAHF_LM,
// FEAT_8000_0007_EDX
0,
// FEAT_C000_0001_EDX
@ -1220,7 +1220,7 @@ static X86CPUDefinition builtin_x86_defs[] = {
CPUID_EXT2_LM | CPUID_EXT2_RDTSCP | CPUID_EXT2_NX |
CPUID_EXT2_SYSCALL,
// FEAT_8000_0001_ECX
CPUID_EXT3_LAHF_LM | CPUID_EXT3_3DNOWPREFETCH,
CPUID_EXT3_ABM | CPUID_EXT3_LAHF_LM | CPUID_EXT3_3DNOWPREFETCH,
// FEAT_8000_0007_EDX
0,
// FEAT_C000_0001_EDX
@ -1265,7 +1265,7 @@ static X86CPUDefinition builtin_x86_defs[] = {
CPUID_EXT2_LM | CPUID_EXT2_RDTSCP | CPUID_EXT2_NX |
CPUID_EXT2_SYSCALL,
// FEAT_8000_0001_ECX
CPUID_EXT3_LAHF_LM | CPUID_EXT3_3DNOWPREFETCH,
CPUID_EXT3_ABM | CPUID_EXT3_LAHF_LM | CPUID_EXT3_3DNOWPREFETCH,
// FEAT_8000_0007_EDX
0,
// FEAT_C000_0001_EDX