[PATCH] powerpc/mm: fix a hardcode on memory boundary checking

[Rui Teng]

The offset of hugepage block will not be 16G, if the expected
page is more than one. Calculate the totol size instead of the
hardcode value.

Signed-off-by: Rui Teng <rui.t...@linux.vnet.ibm.com>
---
 arch/powerpc/mm/hash_utils_64.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c
index 8033493..b829f8e 100644
--- a/arch/powerpc/mm/hash_utils_64.c
+++ b/arch/powerpc/mm/hash_utils_64.c
@@ -506,7 +506,7 @@ static int __init htab_dt_scan_hugepage_blocks(unsigned 
long node,
        printk(KERN_INFO "Huge page(16GB) memory: "
                        "addr = 0x%lX size = 0x%lX pages = %d\n",
                        phys_addr, block_size, expected_pages);
-       if (phys_addr + (16 * GB) <= memblock_end_of_DRAM()) {
+       if (phys_addr + block_size * expected_pages <= memblock_end_of_DRAM()) {
                memblock_reserve(phys_addr, block_size * expected_pages);
                add_gpage(phys_addr, block_size, expected_pages);
        }
-- 
2.9.0