[PATCH] Make extended crashkernel= syntax less confusing

Bernhard Walle bwalle at suse.de
Wed Apr 30 17:57:26 EDT 2008

* Andrew Morton <akpm at linux-foundation.org> [2008-04-30 11:29]:
> I'm a bit surprised to see the code being updated but not the
> documentation.  Were they out of sync before or are they out of sync after
> this patch or were they always in sync or what?

It was simply not specified. I propose the following patch to make it


[PATCH] Clarify inclusive/exclusive in crashkernel commandline in documentation

Reflect the changes from Michael Ellerman in crashkernel syntax that make the
end of the memory exclusive in the documentation. It was simply not specified

Signed-off-by: Bernhard Walle <bwalle at suse.de>

 Documentation/kdump/kdump.txt |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

--- a/Documentation/kdump/kdump.txt
+++ b/Documentation/kdump/kdump.txt
@@ -245,6 +245,8 @@ The syntax is:
+    'start' is inclusive and 'end' is exclusive.
 For example:
@@ -253,10 +255,11 @@ This would mean:
     1) if the RAM is smaller than 512M, then don't reserve anything
        (this is the "rescue" case)
-    2) if the RAM size is between 512M and 2G, then reserve 64M
+    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
 Boot into System Kernel

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