microblaze: Use klimit instead of _end for memory init

For noMMU system when you use larger rootfs image
there is problem with using _end label because
we increase klimit but in memory initialization
we use still _end which is wrong. Larger mtd rootfs
was rewritten by init_bootmem_node.

MMU kernel use static initialization where klimit
is setup to _end. There is no any other hanling
with klimit.

Signed-off-by: Michal Simek <monstr@monstr.eu>

diff --git a/arch/microblaze/mm/init.c b/arch/microblaze/mm/init.c
index 8d92c4e..f207f1a 100644 (file)
--- a/arch/microblaze/mm/init.c
+++ b/arch/microblaze/mm/init.c
@@ -130,13 +130,13 @@ void __init setup_memory(void)
         * (in case the address isn't page-aligned).
         */
 #ifndef CONFIG_MMU
-       map_size = init_bootmem_node(NODE_DATA(0), PFN_UP(TOPHYS((u32)_end)),
+       map_size = init_bootmem_node(NODE_DATA(0), PFN_UP(TOPHYS((u32)klimit)),
                                        min_low_pfn, max_low_pfn);
 #else
        map_size = init_bootmem_node(&contig_page_data,
-               PFN_UP(TOPHYS((u32)_end)), min_low_pfn, max_low_pfn);
+               PFN_UP(TOPHYS((u32)klimit)), min_low_pfn, max_low_pfn);
 #endif
-       lmb_reserve(PFN_UP(TOPHYS((u32)_end)) << PAGE_SHIFT, map_size);
+       lmb_reserve(PFN_UP(TOPHYS((u32)klimit)) << PAGE_SHIFT, map_size);
 
        /* free bootmem is whole main memory */
        free_bootmem(memory_start, memory_size);