Arch-x86: pgtable, document pde bits
PATCH 1/1 Arch-x86: pgtable, document pde bits
Some of pde bits weren't documented, add the short description to them.
Signed-off-by Jiri Slaby <[email protected]>
Cc Thomas Gleixner <[email protected]>
Cc Ingo Molnar <[email protected]>
Cc H. Peter Anvin <[email protected]>
--- include/asm-x86/pgtable.h | 14 +++++++------- 1 files changed, 7 insertions(+), 7 deletions(-)
include/asm-x86/pgtable.h +7 -7
@@ -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 */
Signature · 1 line
1.5.4.1
Quoted 1 line · Jiri Slaby
Some of pde bits weren't documented, add the short description to them.
thanks Jiri, applied.
Ingo