linux-kernel - [PATCH 1/1] x86_64: update address space documentation

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Message-Id: <1226139897-15070-1-git-send-email-jirislaby@gmail.com>
Date:	Sat,  8 Nov 2008 11:24:57 +0100
From:	Jiri Slaby <jirislaby@...il.com>
To:	mingo@...hat.com
Cc:	tglx@...utronix.de, hpa@...or.com, linux-kernel@...r.kernel.org,
	Jiri Slaby <jirislaby@...il.com>,
	Eduardo Habkost <ehabkost@...hat.com>
Subject: [PATCH 1/1] x86_64: update address space documentation

Commit a6523748bddd38bcec11431f57502090b6014a96
(paravirt/x86, 64-bit: move __PAGE_OFFSET to leave a space for hypervisor)
changed address space without changing the documentation. Change it
according to the code change -- direct mapping start:
ffff810000000000 => ffff880000000000 which gives 57 TiB, something between
45 and 46 bits.

Signed-off-by: Jiri Slaby <jirislaby@...il.com>
Cc: Eduardo Habkost <ehabkost@...hat.com>
---
 Documentation/x86/x86_64/mm.txt |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/Documentation/x86/x86_64/mm.txt b/Documentation/x86/x86_64/mm.txt
index efce750..29b52b1 100644
--- a/Documentation/x86/x86_64/mm.txt
+++ b/Documentation/x86/x86_64/mm.txt
@@ -6,7 +6,7 @@ Virtual memory map with 4 level page tables:
 0000000000000000 - 00007fffffffffff (=47 bits) user space, different per mm
 hole caused by [48:63] sign extension
 ffff800000000000 - ffff80ffffffffff (=40 bits) guard hole
-ffff810000000000 - ffffc0ffffffffff (=46 bits) direct mapping of all phys. memory
+ffff880000000000 - ffffc0ffffffffff (=57 TB) direct mapping of all phys. memory
 ffffc10000000000 - ffffc1ffffffffff (=40 bits) hole
 ffffc20000000000 - ffffe1ffffffffff (=45 bits) vmalloc/ioremap space
 ffffe20000000000 - ffffe2ffffffffff (=40 bits) virtual memory map (1TB)
-- 
1.6.0.3

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