path: root/Documentation
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authorAhmed S. Darwish <darwish.07@gmail.com>2011-02-20 20:08:35 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2011-02-21 15:07:04 -0800
commit6f21e64630d8378b64f2ad25c0b291725a00a40c (patch)
tree6639c866bea85948fcff2a4ca79930bcf46abd81 /Documentation
parent8bd89ca22010847e85de37b77d9f19f16b1962ad (diff)
Documentation: complete crashkernel= parameter documentation
Complete the crashkernel= kernel parameter documentation. Signed-off-by: Ahmed S. Darwish <darwish.07@gmail.com> Acked-by: Simon Horman <horms@verge.net.au> Acked-by: Vivek Goyal <vgoyal@redhat.com> Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation')
1 files changed, 8 insertions, 4 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 89835a4766a..050b0e56431 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
- 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.
[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: <dma>