[PATCH] powerpc: Kdump header cleanup

We need to know the base address of the kdump kernel even when we're not a
kdump kernel, so add a #define for it. Move the logic that sets the kdump
kernelbase into kdump.h instead of page.h.

Rename kdump_setup() to setup_kdump_trampoline() to make it clearer what it's
doing, and add an empty definition for the !CRASH_DUMP case to avoid a

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

1 files changed, 1 insertions, 3 deletions

diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index a04f726d3ba..2498afeef29 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -1326,9 +1326,7 @@ void __init early_init_devtree(void *params)
 
         /* Reserve LMB regions used by kernel, initrd, dt, etc... */
         lmb_reserve(PHYSICAL_START, __pa(klimit) - PHYSICAL_START);
-#ifdef CONFIG_CRASH_DUMP
-        lmb_reserve(0, KDUMP_RESERVE_LIMIT);
-#endif
+        reserve_kdump_trampoline();
         early_reserve_mem();
 
         lmb_enforce_memory_limit(memory_limit);