mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-15 16:24:13 +08:00
6252d702c5
Add support for different number of page table levels dependent on the highest address used for a process. This will cause a 31 bit process to use a two level page table instead of the four level page table that is the default after the pud has been introduced. Likewise a normal 64 bit process will use three levels instead of four. Only if a process runs out of the 4 tera bytes which can be addressed with a three level page table the fourth level is dynamically added. Then the process can use up to 8 peta byte. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
13 lines
201 B
C
13 lines
201 B
C
#ifndef __MMU_H
|
|
#define __MMU_H
|
|
|
|
typedef struct {
|
|
struct list_head crst_list;
|
|
struct list_head pgtable_list;
|
|
unsigned long asce_bits;
|
|
unsigned long asce_limit;
|
|
int noexec;
|
|
} mm_context_t;
|
|
|
|
#endif
|