diff options
Diffstat (limited to 'arch/i386/kernel/cpu/common.c')
| -rw-r--r-- | arch/i386/kernel/cpu/common.c | 27 |
1 files changed, 12 insertions, 15 deletions
diff --git a/arch/i386/kernel/cpu/common.c b/arch/i386/kernel/cpu/common.c index 31e344b..15aee26 100644 --- a/arch/i386/kernel/cpu/common.c +++ b/arch/i386/kernel/cpu/common.c @@ -18,9 +18,6 @@ #include "cpu.h" -DEFINE_PER_CPU(struct desc_struct, cpu_gdt_table[GDT_ENTRIES]); -EXPORT_PER_CPU_SYMBOL(cpu_gdt_table); - DEFINE_PER_CPU(unsigned char, cpu_16bit_stack[CPU_16BIT_STACK_SIZE]); EXPORT_PER_CPU_SYMBOL(cpu_16bit_stack); @@ -207,7 +204,10 @@ static int __devinit have_cpuid_p(void) /* Do minimum CPU detection early. Fields really needed: vendor, cpuid_level, family, model, mask, cache alignment. - The others are not touched to avoid unwanted side effects. */ + The others are not touched to avoid unwanted side effects. + + WARNING: this function is only called on the BP. Don't add code here + that is supposed to run on all CPUs. */ static void __init early_cpu_detect(void) { struct cpuinfo_x86 *c = &boot_cpu_data; @@ -239,12 +239,6 @@ static void __init early_cpu_detect(void) if (cap0 & (1<<19)) c->x86_cache_alignment = ((misc >> 8) & 0xff) * 8; } - - early_intel_workaround(c); - -#ifdef CONFIG_X86_HT - phys_proc_id[smp_processor_id()] = (cpuid_ebx(1) >> 24) & 0xff; -#endif } void __devinit generic_identify(struct cpuinfo_x86 * c) @@ -292,6 +286,12 @@ void __devinit generic_identify(struct cpuinfo_x86 * c) get_model_name(c); /* Default name */ } } + + early_intel_workaround(c); + +#ifdef CONFIG_X86_HT + phys_proc_id[smp_processor_id()] = (cpuid_ebx(1) >> 24) & 0xff; +#endif } static void __devinit squash_the_stupid_serial_number(struct cpuinfo_x86 *c) @@ -599,11 +599,6 @@ void __devinit cpu_init(void) load_idt(&idt_descr); /* - * Delete NT - */ - __asm__("pushfl ; andl $0xffffbfff,(%esp) ; popfl"); - - /* * Set up and load the per-CPU TSS and LDT */ atomic_inc(&init_mm.mm_count); @@ -617,8 +612,10 @@ void __devinit cpu_init(void) load_TR_desc(); load_LDT(&init_mm.context); +#ifdef CONFIG_DOUBLEFAULT /* Set up doublefault TSS pointer in the GDT */ __set_tss_desc(cpu, GDT_ENTRY_DOUBLEFAULT_TSS, &doublefault_tss); +#endif /* Clear %fs and %gs. */ asm volatile ("xorl %eax, %eax; movl %eax, %fs; movl %eax, %gs"); |
