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yaml
---
r: 205450
b: refs/heads/master
c: edb18f8
h: refs/heads/master
v: v3
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Suresh Siddha authored and H. Peter Anvin committed Jul 19, 2010
1 parent 80c93c2 commit 37ba36c
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Showing 2 changed files with 14 additions and 13 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: bdc802dcca1709b01988d57e91f9f35ce1609fcc
refs/heads/master: edb18f8ab02843453306601c4aa697f9691129cd
25 changes: 13 additions & 12 deletions trunk/arch/x86/kernel/cpu/addon_cpuid_features.c
Original file line number Diff line number Diff line change
Expand Up @@ -14,6 +14,7 @@ struct cpuid_bit {
u8 reg;
u8 bit;
u32 level;
u32 sub_leaf;
};

enum cpuid_regs {
Expand All @@ -30,16 +31,16 @@ 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_APERFMPERF, CR_ECX, 0, 0x00000006 },
{ X86_FEATURE_EPB, CR_ECX, 3, 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 }
{ X86_FEATURE_IDA, CR_EAX, 1, 0x00000006, 0 },
{ X86_FEATURE_ARAT, CR_EAX, 2, 0x00000006, 0 },
{ X86_FEATURE_APERFMPERF, CR_ECX, 0, 0x00000006, 0 },
{ X86_FEATURE_EPB, CR_ECX, 3, 0x00000006, 0 },
{ X86_FEATURE_CPB, CR_EDX, 9, 0x80000007, 0 },
{ X86_FEATURE_NPT, CR_EDX, 0, 0x8000000a, 0 },
{ X86_FEATURE_LBRV, CR_EDX, 1, 0x8000000a, 0 },
{ X86_FEATURE_SVML, CR_EDX, 2, 0x8000000a, 0 },
{ X86_FEATURE_NRIPS, CR_EDX, 3, 0x8000000a, 0 },
{ 0, 0, 0, 0, 0 }
};

for (cb = cpuid_bits; cb->feature; cb++) {
Expand All @@ -50,8 +51,8 @@ void __cpuinit init_scattered_cpuid_features(struct cpuinfo_x86 *c)
max_level > (cb->level | 0xffff))
continue;

cpuid(cb->level, &regs[CR_EAX], &regs[CR_EBX],
&regs[CR_ECX], &regs[CR_EDX]);
cpuid_count(cb->level, cb->sub_leaf, &regs[CR_EAX],
&regs[CR_EBX], &regs[CR_ECX], &regs[CR_EDX]);

if (regs[cb->reg] & (1 << cb->bit))
set_cpu_cap(c, cb->feature);
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