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    Subject[PATCH v2 -next] Documentation: Improve crashkernel= description

    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 <>

    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

    - 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.

    [KNL] Same as above, but depends on the memory

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      Last update: 2011-02-07 12:33    [W:0.021 / U:6.028 seconds]
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