x86: pgtable, document pde bits
Some of pde bits weren't documented, add the short description to them. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Cc: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
parent
7fda20f146
commit
43cdf5d6e0
@ -4,13 +4,13 @@
|
||||
#define USER_PTRS_PER_PGD ((TASK_SIZE-1)/PGDIR_SIZE+1)
|
||||
#define FIRST_USER_ADDRESS 0
|
||||
|
||||
#define _PAGE_BIT_PRESENT 0
|
||||
#define _PAGE_BIT_RW 1
|
||||
#define _PAGE_BIT_USER 2
|
||||
#define _PAGE_BIT_PWT 3
|
||||
#define _PAGE_BIT_PCD 4
|
||||
#define _PAGE_BIT_ACCESSED 5
|
||||
#define _PAGE_BIT_DIRTY 6
|
||||
#define _PAGE_BIT_PRESENT 0 /* is present */
|
||||
#define _PAGE_BIT_RW 1 /* writeable */
|
||||
#define _PAGE_BIT_USER 2 /* userspace addressable */
|
||||
#define _PAGE_BIT_PWT 3 /* page write through */
|
||||
#define _PAGE_BIT_PCD 4 /* page cache disabled */
|
||||
#define _PAGE_BIT_ACCESSED 5 /* was accessed (raised by CPU) */
|
||||
#define _PAGE_BIT_DIRTY 6 /* was written to (raised by CPU) */
|
||||
#define _PAGE_BIT_FILE 6
|
||||
#define _PAGE_BIT_PSE 7 /* 4 MB (or 2MB) page */
|
||||
#define _PAGE_BIT_PAT 7 /* on 4KB pages */
|
||||
|
Loading…
Reference in New Issue
Block a user