Commit cdc3ee8f authored Jan 25, 2006 by Michael Ellerman Committed by Paul Mackerras Feb 07, 2006

[PATCH] powerpc: Refuse to boot a kdump kernel via OF

You can't boot a kdump kernel via OF, not reliably anyway, the kernel being at
32 MB conflicts with the zImage wrapper etc. and it blows up.

It's trivial to check in prom_init though, and this is early enough that we can
actually drop back to OF where a reset-all will get you going again, which is
kinda nice. I think this should go in for 2.6.16.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>

parent 8c20fafa

arch/powerpc/kernel/prom_init.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -2098,6 +2098,10 @@ unsigned long __init prom_init(unsigned long r3, unsigned long r4,
		*/
		prom_init_stdout();

		/* Bail if this is a kdump kernel. */
		if (PHYSICAL_START > 0)
		prom_panic("Error: You can't boot a kdump kernel from OF!\n");

		/*
		* Check for an initrd
		*/