powerpc: Fix bug arising from having multiple memory_limit variables

We had a static memory_limit in prom.c, and then another one defined
in setup_64.c and used in numa.c, which resulted in the kernel crashing
when mem=xxx was given on the command line.  This puts the declaration
in system.h and the definition in mem.c.  This also moves the
definition of tce_alloc_start/end out of setup_64.c.

Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 0 insertions, 2 deletions

diff --git a/arch/powerpc/platforms/iseries/setup.c b/arch/powerpc/platforms/iseries/setup.c
index b27901481782..1544c6f10a38 100644
--- a/arch/powerpc/platforms/iseries/setup.c
+++ b/arch/powerpc/platforms/iseries/setup.c
@@ -302,8 +302,6 @@ static void __init iSeries_get_cmdline(void)
 
 static void __init iSeries_init_early(void)
 {
-        extern unsigned long memory_limit;
-
         DBG(" -> iSeries_init_early()\n");
 
         ppc64_firmware_features = FW_FEATURE_ISERIES;