powerpc: Allow mem=x cmdline to work with 4G+

We're currently choking on mem=4g (and above) due to memory_limit
being specified as an unsigned long. Make memory_limit
phys_addr_t to fix this.

Signed-off-by: Becky Bruce <beckyb@kernel.crashing.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c
index f668fa9ba804..d0602a76bf7f 100644
--- a/arch/powerpc/mm/mem.c
+++ b/arch/powerpc/mm/mem.c
@@ -57,7 +57,7 @@
 
 int init_bootmem_done;
 int mem_init_done;
-unsigned long memory_limit;
+phys_addr_t memory_limit;
 
 #ifdef CONFIG_HIGHMEM
 pte_t *kmap_pte;