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 at 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
