Exemplo n.º 1
0
static inline void setup_percpu_segment(int cpu)
{
#ifdef CONFIG_X86_32
	struct desc_struct d = GDT_ENTRY_INIT(0x8092, per_cpu_offset(cpu),
					      0xFFFFF);

	write_gdt_entry(get_cpu_gdt_rw(cpu), GDT_ENTRY_PERCPU, &d, DESCTYPE_S);
#endif
}
Exemplo n.º 2
0
	"	pushl %ecx	\n"
	"	pushl %ebx	\n"
	"	pushl %eax	\n"
	"	lcallw *pnp_bios_callpoint\n"
	"	addl $16, %esp	\n"
	"	lret		\n"
	".previous		\n");

#define Q2_SET_SEL(cpu, selname, address, size) \
do { \
	struct desc_struct *gdt = get_cpu_gdt_table((cpu)); \
	set_desc_base(&gdt[(selname) >> 3], (u32)(address)); \
	set_desc_limit(&gdt[(selname) >> 3], (size) - 1); \
} while(0)

static const struct desc_struct bad_bios_desc = GDT_ENTRY_INIT(0x4093,
			(unsigned long)__va(0x400UL), PAGE_SIZE - 0x400 - 1);

/*
 * At some point we want to use this stack frame pointer to unwind
 * after PnP BIOS oopses.
 */

__visible u32 pnp_bios_fault_esp;
__visible u32 pnp_bios_fault_eip;
__visible u32 pnp_bios_is_utter_crap = 0;

static spinlock_t pnp_bios_lock;

/*
 * Support Functions
 */