Messages in this thread Patch in this message |  | | From | Jiri Slaby <> | Subject | [PATCH 1/1] Arch-x86: pgtable, document pde bits | Date | Sat, 22 Mar 2008 18:50:22 +0100 |
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Some of pde bits weren't documented, add the short description to them.
Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> --- include/asm-x86/pgtable.h | 14 +++++++------- 1 files changed, 7 insertions(+), 7 deletions(-)
diff --git a/include/asm-x86/pgtable.h b/include/asm-x86/pgtable.h index 174b877..986204a 100644 --- a/include/asm-x86/pgtable.h +++ b/include/asm-x86/pgtable.h @@ -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 */ -- 1.5.4.1
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