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Documentation: complete crashkernel= parameter documentation

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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>
This commit is contained in:
Ahmed S. Darwish 2011-02-20 20:08:35 -08:00 committed by Linus Torvalds
parent 8bd89ca220
commit 6f21e64630
1 changed files with 8 additions and 4 deletions
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12
Documentation/kernel-parameters.txt
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@ -545,16 +545,20 @@ and is between 256 and 4096 characters. It is defined in the file
Format: Format:
<first_slot>,<last_slot>,<port>,<enum_bit>[,<debug>] <first_slot>,<last_slot>,<port>,<enum_bit>[,<debug>]
crashkernel=nn[KMG]@ss[KMG] crashkernel=size[KMG][@offset[KMG]]
[KNL] Reserve a chunk of physical memory to [KNL] Using kexec, Linux can switch to a 'crash kernel'
hold a kernel to switch to with kexec on panic. 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] crashkernel=range1:size1[,range2:size2,...][@offset]
[KNL] Same as above, but depends on the memory [KNL] Same as above, but depends on the memory
in the running system. The syntax of range is in the running system. The syntax of range is
start-[end] where start and end are both start-[end] where start and end are both
a memory unit (amount[KMG]). See also 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] cs89x0_dma= [HW,NET]
Format: <dma> Format: <dma>