From 86fc1ceadd93e08c8b66f7ad43efa508abd8c5d4 Mon Sep 17 00:00:00 2001 From: mudongliang Date: Sat, 9 Jan 2016 21:40:46 +0800 Subject: [PATCH] modify the bits layout --- Theory/Paging.md | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/Theory/Paging.md b/Theory/Paging.md index b1caab6..33eb07a 100644 --- a/Theory/Paging.md +++ b/Theory/Paging.md @@ -114,10 +114,10 @@ Every access to a linear address is either a supervisor-mode access or a user-mo Where: -* 63 bit - N/X bit (No Execute Bit) - presents ability to execute the code from physical pages mapped by the table entry; +* 63 bit - N/X bit (No Execute Bit) which presents ability to execute the code from physical pages mapped by the table entry; * 62:52 bits - ignored by CPU, used by system software; * 51:12 bits - stores physical address of the lower level paging structure; -* 12:9 bits - ignored by CPU; +* 11:9 bits - ignored by CPU; * MBZ - must be zero bits; * Ignored bits; * A - accessed bit indicates was physical page or page structure accessed;