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| author | Yinghai Lu <yhlu.kernel@gmail.com> | 2008-09-04 20:09:12 -0700 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-09-05 09:40:55 +0200 |
| commit | b89d3b3e2caeab3d895301d1aee3cd2a91eddb79 (patch) | |
| tree | 90142c95160dd8593a6931501c50a78d9480acd1 /arch/x86/kernel/cpu | |
| parent | 56f0d033be2ebb983993e5d7f24ae232c9a1e7f9 (diff) | |
| download | blackbird-obmc-linux-b89d3b3e2caeab3d895301d1aee3cd2a91eddb79.tar.gz blackbird-obmc-linux-b89d3b3e2caeab3d895301d1aee3cd2a91eddb79.zip | |
x86: cpu/common*.c, merge generic_identify()
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/cpu')
| -rw-r--r-- | arch/x86/kernel/cpu/common.c | 15 | ||||
| -rw-r--r-- | arch/x86/kernel/cpu/common_64.c | 19 |
2 files changed, 28 insertions, 6 deletions
diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c index 61a70748213e..f35baa7f3036 100644 --- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -548,6 +548,10 @@ void __init early_cpu_init(void) * of early VIA chips and (more importantly) broken virtualizers that * are not easy to detect. Hence, probe for it based on first * principles. + * + * Note: no 64-bit chip is known to lack these, but put the code here + * for consistency with 32 bits, and to make it utterly trivial to + * diagnose the problem should it ever surface. */ static void __cpuinit detect_nopl(struct cpuinfo_x86 *c) { @@ -586,11 +590,16 @@ static void __cpuinit generic_identify(struct cpuinfo_x86 *c) if (c->cpuid_level >= 0x00000001) { c->initial_apicid = (cpuid_ebx(1) >> 24) & 0xFF; -#ifdef CONFIG_X86_HT +#ifdef CONFIG_X86_32 +# ifdef CONFIG_X86_HT c->apicid = phys_pkg_id(c->initial_apicid, 0); - c->phys_proc_id = c->initial_apicid; -#else +# else c->apicid = c->initial_apicid; +# endif +#endif + +#ifdef CONFIG_X86_HT + c->phys_proc_id = c->initial_apicid; #endif } diff --git a/arch/x86/kernel/cpu/common_64.c b/arch/x86/kernel/cpu/common_64.c index 68b06a39dcac..869a6ff9f7dc 100644 --- a/arch/x86/kernel/cpu/common_64.c +++ b/arch/x86/kernel/cpu/common_64.c @@ -581,6 +581,9 @@ static void __cpuinit detect_nopl(struct cpuinfo_x86 *c) static void __cpuinit generic_identify(struct cpuinfo_x86 *c) { + if (!have_cpuid_p()) + return; + c->extended_cpuid_level = 0; cpu_detect(c); @@ -589,11 +592,21 @@ static void __cpuinit generic_identify(struct cpuinfo_x86 *c) get_cpu_cap(c); - c->initial_apicid = (cpuid_ebx(1) >> 24) & 0xff; -#ifdef CONFIG_SMP - c->phys_proc_id = c->initial_apicid; + if (c->cpuid_level >= 0x00000001) { + c->initial_apicid = (cpuid_ebx(1) >> 24) & 0xFF; +#ifdef CONFIG_X86_32 +# ifdef CONFIG_X86_HT + c->apicid = phys_pkg_id(c->initial_apicid, 0); +# else + c->apicid = c->initial_apicid; +# endif #endif +#ifdef CONFIG_X86_HT + c->phys_proc_id = c->initial_apicid; +#endif + } + if (c->extended_cpuid_level >= 0x80000004) get_model_name(c); /* Default name */ |
