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 09db4ef..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 */
@@ -541,7 +543,7 @@ static unsigned long __init htab_get_table_size(void)
 void create_section_mapping(unsigned long start, unsigned long end)
 {
        BUG_ON(htab_bolt_mapping(start, end, __pa(start),
-                                PAGE_KERNEL, mmu_linear_psize,
+                                pgprot_val(PAGE_KERNEL), mmu_linear_psize,
                                 mmu_kernel_ssize));
 }
 
@@ -649,7 +651,7 @@ void __init htab_initialize(void)
                mtspr(SPRN_SDR1, _SDR1);
        }
 
-       prot = PAGE_KERNEL;
+       prot = pgprot_val(PAGE_KERNEL);
 
 #ifdef CONFIG_DEBUG_PAGEALLOC
        linear_map_hash_count = lmb_end_of_DRAM() >> PAGE_SHIFT;