| Glauber Costa | e32640a | 2008-03-03 14:12:45 -0300 | [diff] [blame] | 1 | /* |
| 2 | * SMP stuff which is common to all sub-architectures. |
| 3 | */ |
| 4 | #include <linux/module.h> |
| 5 | #include <asm/smp.h> |
| 6 | |
| 7 | #ifdef CONFIG_X86_32 |
| 8 | DEFINE_PER_CPU(unsigned long, this_cpu_off); |
| 9 | EXPORT_PER_CPU_SYMBOL(this_cpu_off); |
| 10 | |
| 11 | /* Initialize the CPU's GDT. This is either the boot CPU doing itself |
| 12 | (still using the master per-cpu area), or a CPU doing it for a |
| 13 | secondary which will soon come up. */ |
| 14 | __cpuinit void init_gdt(int cpu) |
| 15 | { |
| 16 | struct desc_struct *gdt = get_cpu_gdt_table(cpu); |
| 17 | |
| 18 | pack_descriptor(&gdt[GDT_ENTRY_PERCPU], |
| 19 | __per_cpu_offset[cpu], 0xFFFFF, |
| 20 | 0x2 | DESCTYPE_S, 0x8); |
| 21 | |
| 22 | gdt[GDT_ENTRY_PERCPU].s = 1; |
| 23 | |
| 24 | per_cpu(this_cpu_off, cpu) = __per_cpu_offset[cpu]; |
| 25 | per_cpu(cpu_number, cpu) = cpu; |
| 26 | } |
| 27 | #endif |