linux-kernel - [PATCH 1/1] Arch-x86: pgtable, document pde bits

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:	Sat, 22 Mar 2008 18:50:22 +0100
From:	Jiri Slaby <jirislaby@...il.com>
To:	mingo@...hat.com
Cc:	linux-kernel@...r.kernel.org, Jiri Slaby <jirislaby@...il.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>
Subject: [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 <jirislaby@...il.com>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: H. Peter Anvin <hpa@...or.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

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/