blob: 545b7f825683d2186dd0ca869c8893680af8237d (
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
33
34
35
36
37
38
39
40
41
|
#ifndef __ARCH_DESC_H
#define __ARCH_DESC_H
#include <asm/ldt.h>
#ifndef __ASSEMBLY__
struct desc_struct {
unsigned long a,b;
};
struct Xgt_desc_struct {
unsigned short size;
unsigned long address __attribute__((packed));
};
extern struct desc_struct default_ldt[];
static inline void clear_LDT(void)
{
/*
* NB. We load the default_ldt for lcall7/27 handling on demand, as
* it slows down context switching. Noone uses it anyway.
*/
queue_set_ldt(0, 0);
}
static inline void load_LDT(struct mm_struct *mm)
{
void *segments = mm->context.segments;
int count = 0;
if ( unlikely(segments != NULL) )
count = LDT_ENTRIES;
queue_set_ldt((unsigned long)segments, count);
}
#endif /* __ASSEMBLY__ */
#endif /* __ARCH_DESC_H__ */
|