kexec: crash: don't save swapper_pg_dir for !CONFIG_MMU configurations

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nommu platforms don't have very interesting swapper_pg_dir pointers and
usually just #define them to NULL, meaning that we can't include them in
the vmcoreinfo on the kexec crash path.

This patch only saves the swapper_pg_dir if we have an MMU.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Reviewed-by: Simon Horman <horms@verge.net.au>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

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Will Deacon 2012-03-28 14:42:47 -07:00 • committed by Linus Torvalds

parent 7d7f98488b

commit d034cfab4f

1 changed files with 2 additions and 0 deletions

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kernel/kexec.c

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