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target-i386: Reenable RDTSCP support on Opteron_G[345] CPU models CPU models

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The missing functionality was added ~3 years ago with the Linux commit

46896c73c1a4 ("KVM: svm: add support for RDTSCP")

so reenable RDTSCP support on those CPU models.

Opteron_G2 - being family 15, model 6, doesn't have RDTSCP support
(the real hardware doesn't have it. K8 got RDTSCP support with the NPT
models, i.e., models >= 0x40).

Document the host's minimum required kernel version, while at it.

Backports commit 483c6ad426dbab72d912fe4793d7d558671aa727 from qemu
This commit is contained in:
Borislav Petkov 2019-01-14 14:50:04 -05:00 committed by Lioncash
parent 585ebf50f7
commit 152fdb49de
No known key found for this signature in database
GPG key ID: 4E3C3CC1031BA9C7
1 changed files with 3 additions and 3 deletions
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6
qemu/target/i386/cpu.c
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@ -3323,7 +3323,7 @@ static X86CPUDefinition builtin_x86_defs[] = {
// FEAT_7_0_EDX
0,
// FEAT_8000_0001_EDX
CPUID_EXT2_LM | CPUID_EXT2_NX | CPUID_EXT2_SYSCALL,
CPUID_EXT2_LM | CPUID_EXT2_NX | CPUID_EXT2_SYSCALL | CPUID_EXT2_RDTSCP,
// FEAT_8000_0001_ECX
CPUID_EXT3_MISALIGNSSE | CPUID_EXT3_SSE4A |
CPUID_EXT3_ABM | CPUID_EXT3_SVM | CPUID_EXT3_LAHF_LM,
@ -3355,7 +3355,7 @@ static X86CPUDefinition builtin_x86_defs[] = {
0,
// FEAT_8000_0001_EDX
CPUID_EXT2_LM | CPUID_EXT2_PDPE1GB | CPUID_EXT2_NX |
CPUID_EXT2_SYSCALL,
CPUID_EXT2_SYSCALL | CPUID_EXT2_RDTSCP,
// FEAT_8000_0001_ECX
CPUID_EXT3_FMA4 | CPUID_EXT3_XOP |
CPUID_EXT3_3DNOWPREFETCH | CPUID_EXT3_MISALIGNSSE |
@ -3389,7 +3389,7 @@ static X86CPUDefinition builtin_x86_defs[] = {
0,
// FEAT_8000_0001_EDX
CPUID_EXT2_LM | CPUID_EXT2_PDPE1GB | CPUID_EXT2_NX |
CPUID_EXT2_SYSCALL,
CPUID_EXT2_SYSCALL | CPUID_EXT2_RDTSCP,
// FEAT_8000_0001_ECX
CPUID_EXT3_TBM | CPUID_EXT3_FMA4 | CPUID_EXT3_XOP |
CPUID_EXT3_3DNOWPREFETCH | CPUID_EXT3_MISALIGNSSE |