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    Subject[Patch 7/7] doc: update the kdump document

    Update the document for kdump.

    Signed-off-by: WANG Cong <>


    Index: linux-2.6/Documentation/kdump/kdump.txt
    --- linux-2.6.orig/Documentation/kdump/kdump.txt
    +++ linux-2.6/Documentation/kdump/kdump.txt
    @@ -147,6 +147,15 @@ System kernel config options
    analysis tools require a vmlinux with debug symbols in order to read
    and analyze a dump file.

    +4) Enable "automatically reserve memory for kexec kernel" in
    + "Processor type and features."
    + This will let you to use "crashkernel=auto", instead of specifying
    + numbers for "crashkernel=". Note, you need to have enough memory.
    + The threshold and reserved memory size are arch-dependent.
    Dump-capture kernel config options (Arch Independent)

    @@ -266,6 +275,13 @@ This would mean:
    2) if the RAM size is between 512M and 2G (exclusive), then reserve 64M
    3) if the RAM size is larger than 2G, then reserve 128M

    +Or you can use:
    + crashkernel=auto
    +if you have enough memory. The threshold is 4G, below which this won't work.
    +Also the automatically reserved memory size would be 128M on x86, 256M on
    +other platforms that have KEXEC.

    Boot into System Kernel

     \ /
      Last update: 2009-08-06 08:23    [W:0.030 / U:13.616 seconds]
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