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x86, cpu: Make APERF/MPERF a normal table-driven flag
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APERF/MPERF can be handled via the table like all the other scattered
CPU flags.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: Thomas Renninger <trenn@suse.de>
Cc: Borislav Petkov <borislav.petkov@amd.com>
LKML-Reference: <1270065406-1814-4-git-send-email-bp@amd64.org>
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H. Peter Anvin committed May 3, 2010
1 parent d88d95e commit 097c1bd
Showing 1 changed file with 8 additions and 15 deletions.
23 changes: 8 additions & 15 deletions arch/x86/kernel/cpu/addon_cpuid_features.c
Original file line number Diff line number Diff line change
Expand Up @@ -30,13 +30,14 @@ void __cpuinit init_scattered_cpuid_features(struct cpuinfo_x86 *c)
const struct cpuid_bit *cb;

static const struct cpuid_bit __cpuinitconst cpuid_bits[] = {
{ X86_FEATURE_IDA, CR_EAX, 1, 0x00000006 },
{ X86_FEATURE_ARAT, CR_EAX, 2, 0x00000006 },
{ X86_FEATURE_CPB, CR_EDX, 9, 0x80000007 },
{ X86_FEATURE_NPT, CR_EDX, 0, 0x8000000a },
{ X86_FEATURE_LBRV, CR_EDX, 1, 0x8000000a },
{ X86_FEATURE_SVML, CR_EDX, 2, 0x8000000a },
{ X86_FEATURE_NRIPS, CR_EDX, 3, 0x8000000a },
{ X86_FEATURE_IDA, CR_EAX, 1, 0x00000006 },
{ X86_FEATURE_ARAT, CR_EAX, 2, 0x00000006 },
{ X86_FEATURE_APERFMPERF, CR_ECX, 0, 0x00000006 },
{ X86_FEATURE_CPB, CR_EDX, 9, 0x80000007 },
{ X86_FEATURE_NPT, CR_EDX, 0, 0x8000000a },
{ X86_FEATURE_LBRV, CR_EDX, 1, 0x8000000a },
{ X86_FEATURE_SVML, CR_EDX, 2, 0x8000000a },
{ X86_FEATURE_NRIPS, CR_EDX, 3, 0x8000000a },
{ 0, 0, 0, 0 }
};

Expand All @@ -54,14 +55,6 @@ void __cpuinit init_scattered_cpuid_features(struct cpuinfo_x86 *c)
if (regs[cb->reg] & (1 << cb->bit))
set_cpu_cap(c, cb->feature);
}

/*
* common AMD/Intel features
*/
if (c->cpuid_level >= 6) {
if (cpuid_ecx(6) & 0x1)
set_cpu_cap(c, X86_FEATURE_APERFMPERF);
}
}

/* leaf 0xb SMT level */
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