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Commit 6f21e646 authored by Ahmed S. Darwish's avatar Ahmed S. Darwish Committed by Linus Torvalds
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Documentation: complete crashkernel= parameter documentation 



Complete the crashkernel= kernel parameter documentation.

Signed-off-by: default avatarAhmed S. Darwish <darwish.07@gmail.com>
Acked-by: default avatarSimon Horman <horms@verge.net.au>
Acked-by: default avatarVivek Goyal <vgoyal@redhat.com>
Signed-off-by: default avatarRandy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 8bd89ca2

Documentation/kernel-parameters.txt

+8 −4
Original line number Diff line number Diff line
@@ -545,16 +545,20 @@ 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. 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: <dma>