[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, 8 insertions, 3 deletions

diff --git a/arch/powerpc/kernel/crash_dump.c b/arch/powerpc/kernel/crash_dump.c
index 764d07329716..371973be8d71 100644
--- a/arch/powerpc/kernel/crash_dump.c
+++ b/arch/powerpc/kernel/crash_dump.c
@@ -25,6 +25,11 @@
 #define DBG(fmt...)
 #endif
 
+void reserve_kdump_trampoline(void)
+{
+        lmb_reserve(0, KDUMP_RESERVE_LIMIT);
+}
+
 static void __init create_trampoline(unsigned long addr)
 {
         /* The maximum range of a single instruction branch, is the current
@@ -39,11 +44,11 @@ static void __init create_trampoline(unsigned long addr)
         create_branch(addr + 4, addr + PHYSICAL_START, 0);
 }
 
-void __init kdump_setup(void)
+void __init setup_kdump_trampoline(void)
 {
         unsigned long i;
 
-        DBG(" -> kdump_setup()\n");
+        DBG(" -> setup_kdump_trampoline()\n");
 
         for (i = KDUMP_TRAMPOLINE_START; i < KDUMP_TRAMPOLINE_END; i += 8) {
                 create_trampoline(i);
@@ -52,7 +57,7 @@ void __init kdump_setup(void)
         create_trampoline(__pa(system_reset_fwnmi) - PHYSICAL_START);
         create_trampoline(__pa(machine_check_fwnmi) - PHYSICAL_START);
 
-        DBG(" <- kdump_setup()\n");
+        DBG(" <- setup_kdump_trampoline()\n");
 }
 
 #ifdef CONFIG_PROC_VMCORE