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authorMichael Ellerman <michael@ellerman.id.au>2006-02-03 19:05:47 +1100
committerPaul Mackerras <paulus@samba.org>2006-02-07 21:32:44 +1100
commitb68239ee746760bd99a68692f4c97a28f08a5d01 (patch)
tree716746e0faca1db7691f53c8d85ae72bddc5d001 /include/asm-powerpc/prom.h
parentb4fd884a037c791a39f2f03da719e251af176a97 (diff)
[PATCH] powerpc: Don't overwrite flat device tree with kdump kernel
It's possible for prom_init to allocate the flat device tree inside the kdump crash kernel region. If this happens, when we load the kdump kernel we overwrite the flattened device tree, which is bad. We could make prom_init try and avoid allocating inside the crash kernel region, but then we run into issues if the crash kernel region uses all the space inside the RMO. The easiest solution is to move the flat device tree once we're running in the kernel. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'include/asm-powerpc/prom.h')
-rw-r--r--include/asm-powerpc/prom.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/asm-powerpc/prom.h b/include/asm-powerpc/prom.h
index 5b2bd4eefb0..cbd297f44cc 100644
--- a/include/asm-powerpc/prom.h
+++ b/include/asm-powerpc/prom.h
@@ -222,5 +222,7 @@ extern int of_address_to_resource(struct device_node *dev, int index,
extern int of_pci_address_to_resource(struct device_node *dev, int bar,
struct resource *r);
+extern void kdump_move_device_tree(void);
+
#endif /* __KERNEL__ */
#endif /* _POWERPC_PROM_H */