blob: add36b4e37c92d00eabe22f25ab0148febfcb2e2 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
|
/*
* SMP stuff which is common to all sub-architectures.
*/
#include <linux/module.h>
#include <asm/smp.h>
#include <asm/sections.h>
#ifdef CONFIG_X86_64
DEFINE_PER_CPU(unsigned long, this_cpu_off) = (unsigned long)__per_cpu_load;
#else
DEFINE_PER_CPU(unsigned long, this_cpu_off);
#endif
EXPORT_PER_CPU_SYMBOL(this_cpu_off);
#ifdef CONFIG_X86_32
/*
* Initialize the CPU's GDT. This is either the boot CPU doing itself
* (still using the master per-cpu area), or a CPU doing it for a
* secondary which will soon come up.
*/
__cpuinit void init_gdt(int cpu)
{
struct desc_struct gdt;
pack_descriptor(&gdt, __per_cpu_offset[cpu], 0xFFFFF,
0x2 | DESCTYPE_S, 0x8);
gdt.s = 1;
write_gdt_entry(get_cpu_gdt_table(cpu),
GDT_ENTRY_PERCPU, &gdt, DESCTYPE_S);
}
#endif
|
