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[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>
This commit is contained in:
Michael Ellerman 2006-01-25 21:48:48 +13:00 committed by Paul Mackerras
parent 8c20fafa85
commit cdc3ee8f20
1 changed files with 4 additions and 0 deletions
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4
arch/powerpc/kernel/prom_init.c
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@ -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
*/