From: "Ahmed S. Darwish" <darwish.07@gmail.com>
To: Randy Dunlap <rdunlap@xenotime.net>
Cc: linux-doc@vger.kernel.org, kexec@lists.infradead.org,
LKML <linux-kernel@vger.kernel.org>,
Haren Myneni <hbabu@us.ibm.com>,
Simon Horman <horms@verge.net.au>,
Eric Biederman <ebiederm@xmission.com>,
Vivek Goyal <vgoyal@redhat.com>
Subject: [PATCH v2 -next] Documentation: Improve crashkernel= description
Date: Mon, 7 Feb 2011 13:30:54 +0200 [thread overview]
Message-ID: <20110207113054.GA10388@laptop> (raw)
In-Reply-To: <20110206201448.4a259575.rdunlap@xenotime.net>
Had to explore two C code files to make sense of the 'crashkernel='
kernel parameter values. Improve the situation.
Signed-off-by: Ahmed S. Darwish <darwish.07@gmail.com>
---
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 89835a4..5ad9980 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -545,9 +545,12 @@ and is between 256 and 4096 characters. It is defined in the file
Format:
<first_slot>,<last_slot>,<port>,<enum_bit>[,<debug>]
- crashkernel=nn[KMG]@ss[KMG]
- [KNL] Reserve a chunk of physical memory to
- hold a kernel to switch to with kexec on panic.
+ crashkernel=size[KMG][@offset[KMG]]
+ [KNL] Using kexec, Linux can switch to a 'crash kernel'
+ upon panic. This parameter reserves the physical
+ memory region [offset, offset + size] for that kernel
+ image. If '@offset' is omitted, then a suitable offset
+ is selected automatically.
crashkernel=range1:size1[,range2:size2,...][@offset]
[KNL] Same as above, but depends on the memory
--
Darwish
http://darwish.07.googlepages.com
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WARNING: multiple messages have this Message-ID (diff)
From: "Ahmed S. Darwish" <darwish.07@gmail.com>
To: Randy Dunlap <rdunlap@xenotime.net>
Cc: Simon Horman <horms@verge.net.au>,
Vivek Goyal <vgoyal@redhat.com>, Haren Myneni <hbabu@us.ibm.com>,
Eric Biederman <ebiederm@xmission.com>,
kexec@lists.infradead.org, LKML <linux-kernel@vger.kernel.org>,
linux-doc@vger.kernel.org
Subject: [PATCH v2 -next] Documentation: Improve crashkernel= description
Date: Mon, 7 Feb 2011 13:30:54 +0200 [thread overview]
Message-ID: <20110207113054.GA10388@laptop> (raw)
In-Reply-To: <20110206201448.4a259575.rdunlap@xenotime.net>
Had to explore two C code files to make sense of the 'crashkernel='
kernel parameter values. Improve the situation.
Signed-off-by: Ahmed S. Darwish <darwish.07@gmail.com>
---
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 89835a4..5ad9980 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -545,9 +545,12 @@ and is between 256 and 4096 characters. It is defined in the file
Format:
<first_slot>,<last_slot>,<port>,<enum_bit>[,<debug>]
- crashkernel=nn[KMG]@ss[KMG]
- [KNL] Reserve a chunk of physical memory to
- hold a kernel to switch to with kexec on panic.
+ crashkernel=size[KMG][@offset[KMG]]
+ [KNL] Using kexec, Linux can switch to a 'crash kernel'
+ upon panic. This parameter reserves the physical
+ memory region [offset, offset + size] for that kernel
+ image. If '@offset' is omitted, then a suitable offset
+ is selected automatically.
crashkernel=range1:size1[,range2:size2,...][@offset]
[KNL] Same as above, but depends on the memory
--
Darwish
http://darwish.07.googlepages.com
next prev parent reply other threads:[~2011-02-07 11:31 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-02-06 15:41 [PATCH -next] Documentation: Improve crashkernel= description Ahmed S. Darwish
2011-02-06 15:41 ` Ahmed S. Darwish
2011-02-06 21:57 ` Simon Horman
2011-02-06 21:57 ` Simon Horman
2011-02-07 2:25 ` Rob Landley
2011-02-07 2:25 ` Rob Landley
2011-02-07 2:35 ` Eric W. Biederman
2011-02-07 2:35 ` Eric W. Biederman
2011-02-07 2:42 ` Simon Horman
2011-02-07 2:42 ` Simon Horman
2011-02-07 14:33 ` Vivek Goyal
2011-02-07 14:33 ` Vivek Goyal
2011-02-07 10:59 ` WANG Cong
2011-02-07 4:14 ` Randy Dunlap
2011-02-07 4:14 ` Randy Dunlap
2011-02-07 11:30 ` Ahmed S. Darwish [this message]
2011-02-07 11:30 ` [PATCH v2 " Ahmed S. Darwish
2011-02-07 11:41 ` Simon Horman
2011-02-07 11:41 ` Simon Horman
2011-02-07 14:25 ` Vivek Goyal
2011-02-07 14:25 ` Vivek Goyal
2011-02-07 16:01 ` [PATCH v3 " Ahmed S. Darwish
2011-02-07 16:01 ` Ahmed S. Darwish
2011-02-08 18:50 ` Randy Dunlap
2011-02-08 18:50 ` Randy Dunlap
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