powerpc: Don't use a 16G page if beyond mem= limits

[pandora-kernel.git] / arch / powerpc / mm / hash_utils_64.c

diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c
index 5c64af1..8d5b475 100644 (file)
--- a/arch/powerpc/mm/hash_utils_64.c
+++ b/arch/powerpc/mm/hash_utils_64.c
@@ -382,8 +382,10 @@ 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);
-       lmb_reserve(phys_addr, block_size * expected_pages);
-       add_gpage(phys_addr, block_size, expected_pages);
+       if (phys_addr + (16 * GB) <= lmb_end_of_DRAM()) {
+               lmb_reserve(phys_addr, block_size * expected_pages);
+               add_gpage(phys_addr, block_size, expected_pages);
+       }
        return 0;
 }
 #endif /* CONFIG_HUGETLB_PAGE */