From 6f21e64630d8378b64f2ad25c0b291725a00a40c Mon Sep 17 00:00:00 2001 From: "Ahmed S. Darwish" Date: Sun, 20 Feb 2011 20:08:35 -0800 Subject: Documentation: complete crashkernel= parameter documentation Complete the crashkernel= kernel parameter documentation. Signed-off-by: Ahmed S. Darwish Acked-by: Simon Horman Acked-by: Vivek Goyal Signed-off-by: Randy Dunlap Signed-off-by: Linus Torvalds --- Documentation/kernel-parameters.txt | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) (limited to 'Documentation/kernel-parameters.txt') diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index 89835a4766a6..050b0e564315 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -545,16 +545,20 @@ and is between 256 and 4096 characters. It is defined in the file Format: ,,,[,] - 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. Check + Documentation/kdump/kdump.txt for further details. crashkernel=range1:size1[,range2:size2,...][@offset] [KNL] Same as above, but depends on the memory in the running system. The syntax of range is start-[end] where start and end are both a memory unit (amount[KMG]). See also - Documentation/kdump/kdump.txt for a example. + Documentation/kdump/kdump.txt for an example. cs89x0_dma= [HW,NET] Format: -- cgit v1.2.3-59-g8ed1b