linux-kernel - [PATCH v3 1/2] update mem= option's spec according to its implementation

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Message-Id: <1351500524-23907-2-git-send-email-wency@cn.fujitsu.com>
Date:	Mon, 29 Oct 2012 16:48:43 +0800
From:	Wen Congyang <wency@...fujitsu.com>
To:	x86@...nel.org, linux-kernel@...r.kernel.org,
	linux-doc@...r.kernel.org
Cc:	Rob Landley <rob@...dley.net>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>, bhelgaas@...gle.com,
	"H. Peter Anvin" <hpa@...or.com>,
	Yasuaki Ishimatsu <isimatu.yasuaki@...fujitsu.com>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Wen Congyang <wency@...fujitsu.com>
Subject: [PATCH v3 1/2] update mem= option's spec according to its implementation

Current mem= implementation seems buggy because specification and
implementation doesn't match. Current mem= has been working
for many years and it's not buggy, it works as expected. So
we should update the specification.

Signed-off-by: Wen Congyang <wency@...fujitsu.com>
Sort-of-tentatively-acked-by: Rob Landley <rob@...dley.net>
---
 Documentation/kernel-parameters.txt | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 9776f06..91863a5 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1481,9 +1481,10 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
 	mem=nn[KMG]	[KNL,BOOT] Force usage of a specific amount of memory
 			Amount of memory to be used when the kernel is not able
 			to see the whole system memory or for test.
-			[X86-32] Use together with memmap= to avoid physical
-			address space collisions. Without memmap= PCI devices
-			could be placed at addresses belonging to unused RAM.
+			[X86] Work as limiting max address. Use together
+			with memmap= to avoid physical address space collisions.
+			Without memmap= PCI devices could be placed at addresses
+			belonging to unused RAM.
 
 	mem=nopentium	[BUGS=X86-32] Disable usage of 4MB pages for kernel
 			memory.
-- 
1.8.0

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