powerpc/kdump: Override crash_free_reserved_phys_range to avoid freeing RTAS

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The crashkernel region will almost always overlap RTAS. If we free the
crashkernel region via "echo 0 > /sys/kernel/kexec_crash_size" then we will
free RTAS and the machine will crash in confusing and exciting ways.

Override crash_free_reserved_phys_range and check for overlap with RTAS.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

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Anton Blanchard 2010-08-24 14:23:44 +00:00 • committed by Benjamin Herrenschmidt

parent 64ff312876

commit d72e063bb3

1 changed files with 33 additions and 0 deletions

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arch/powerpc/kernel/crash_dump.c

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