On 11/9/15 3:20 PM, Tony Luck wrote:
@@ -4984,9 +4987,9 @@ static void __init_refok alloc_node_mem_map(struct pglist_data *pgdat) */ if (pgdat == NODE_DATA(0)) { mem_map = NODE_DATA(0)->node_mem_map; -#ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP +#if defined(CONFIG_HAVE_MEMBLOCK_NODE_MAP) || defined(CONFIG_FLATMEM) if (page_to_pfn(mem_map) != pgdat->node_start_pfn) - mem_map -= (pgdat->node_start_pfn - ARCH_PFN_OFFSET); + mem_map -= offset; #endif /* CONFIG_HAVE_MEMBLOCK_NODE_MAP */ } #endifThis piece breaks ia64. See the comment earlier in the function that "ia64 gets its own node_mem_map" ... so we skip the initialization of offset ... and arrive down here and just subtract "0" from mem_map. Attached patch fixes ia64 ... does ARM still work if this is applied? -Tony
Yes, this still fixes the problem for me. I see the pfn <-> page translation working as expected. Tested-by: Laura Abbott <laura@xxxxxxxxxxxx> Thanks, Laura -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>