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| author | Ingo Molnar <mingo@elte.hu> | 2008-08-11 13:27:47 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-08-11 13:27:47 +0200 |
| commit | c4c0c56a7a85ed5725786219e4fbca7e840b1531 (patch) | |
| tree | c9d6b35a571fd5e80ddf5bf4a60142480eaa18d8 /arch/x86/kernel/cpu/intel.c | |
| parent | rcu classic: new algorithm for callbacks-processing(v2) (diff) | |
| parent | Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/c... (diff) | |
| download | linux-c4c0c56a7a85ed5725786219e4fbca7e840b1531.tar.xz linux-c4c0c56a7a85ed5725786219e4fbca7e840b1531.zip | |
Merge branch 'linus' into core/rcu
Diffstat (limited to 'arch/x86/kernel/cpu/intel.c')
| -rw-r--r-- | arch/x86/kernel/cpu/intel.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/intel.c b/arch/x86/kernel/cpu/intel.c index 70609efdf1da..b75f2569b8f8 100644 --- a/arch/x86/kernel/cpu/intel.c +++ b/arch/x86/kernel/cpu/intel.c @@ -227,6 +227,16 @@ static void __cpuinit init_intel(struct cpuinfo_x86 *c) if (cpu_has_bts) ds_init_intel(c); + /* + * See if we have a good local APIC by checking for buggy Pentia, + * i.e. all B steppings and the C2 stepping of P54C when using their + * integrated APIC (see 11AP erratum in "Pentium Processor + * Specification Update"). + */ + if (cpu_has_apic && (c->x86<<8 | c->x86_model<<4) == 0x520 && + (c->x86_mask < 0x6 || c->x86_mask == 0xb)) + set_cpu_cap(c, X86_FEATURE_11AP); + #ifdef CONFIG_X86_NUMAQ numaq_tsc_disable(); #endif |