tree 9bab39d568bee4b95e37700b0e87ef7346525953
parent 64ff31287693c1f325cb9cb049569c1611438ef1
author Anton Blanchard <anton@samba.org> 1282659824 +0000
committer Benjamin Herrenschmidt <benh@kernel.crashing.org> 1291006097 +1100

powerpc/kdump: Override crash_free_reserved_phys_range to avoid freeing RTAS

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>