diff --git a/arch/x86/mm/numa_32.c b/arch/x86/mm/numa_32.c index 60701a5e0de005b1a4bfe1fd8d58ba063188958f..5039e9b21d9e3ae94aa11a772c2c525c18ca5e8b 100644 --- a/arch/x86/mm/numa_32.c +++ b/arch/x86/mm/numa_32.c @@ -264,70 +264,64 @@ void resume_map_numa_kva(pgd_t *pgd_base) } #endif -static __init unsigned long calculate_numa_remap_pages(void) +static __init unsigned long init_alloc_remap(int nid, unsigned long offset) { - int nid; - unsigned long size, reserve_pages = 0; + unsigned long size; + u64 node_kva; - for_each_online_node(nid) { - u64 node_kva; - - /* - * The acpi/srat node info can show hot-add memroy zones - * where memory could be added but not currently present. - */ - printk(KERN_DEBUG "node %d pfn: [%lx - %lx]\n", - nid, node_start_pfn[nid], node_end_pfn[nid]); - if (node_start_pfn[nid] > max_pfn) - continue; - if (!node_end_pfn[nid]) - continue; - if (node_end_pfn[nid] > max_pfn) - node_end_pfn[nid] = max_pfn; - - /* ensure the remap includes space for the pgdat. */ - size = node_remap_size[nid]; - size += ALIGN(sizeof(pg_data_t), PAGE_SIZE); - - /* convert size to large (pmd size) pages, rounding up */ - size = (size + LARGE_PAGE_BYTES - 1) / LARGE_PAGE_BYTES; - /* now the roundup is correct, convert to PAGE_SIZE pages */ - size = size * PTRS_PER_PTE; - - node_kva = memblock_find_in_range(node_start_pfn[nid] << PAGE_SHIFT, - ((u64)node_end_pfn[nid])<> PAGE_SHIFT); - - /* - * prevent kva address below max_low_pfn want it on system - * with less memory later. - * layout will be: KVA address , KVA RAM - * - * we are supposed to only record the one less then max_low_pfn - * but we could have some hole in high memory, and it will only - * check page_is_ram(pfn) && !page_is_reserved_early(pfn) to decide - * to use it as free. - * So memblock_x86_reserve_range here, hope we don't run out of that array - */ - memblock_x86_reserve_range(node_kva, - node_kva + (((u64)size)<> PAGE_SHIFT; - } - printk(KERN_INFO "Reserving total of %lx pages for numa KVA remap\n", - reserve_pages); - return reserve_pages; + /* + * The acpi/srat node info can show hot-add memroy zones where + * memory could be added but not currently present. + */ + printk(KERN_DEBUG "node %d pfn: [%lx - %lx]\n", + nid, node_start_pfn[nid], node_end_pfn[nid]); + if (node_start_pfn[nid] > max_pfn) + return 0; + if (!node_end_pfn[nid]) + return 0; + if (node_end_pfn[nid] > max_pfn) + node_end_pfn[nid] = max_pfn; + + /* ensure the remap includes space for the pgdat. */ + size = node_remap_size[nid]; + size += ALIGN(sizeof(pg_data_t), PAGE_SIZE); + + /* convert size to large (pmd size) pages, rounding up */ + size = (size + LARGE_PAGE_BYTES - 1) / LARGE_PAGE_BYTES; + /* now the roundup is correct, convert to PAGE_SIZE pages */ + size = size * PTRS_PER_PTE; + + node_kva = memblock_find_in_range(node_start_pfn[nid] << PAGE_SHIFT, + (u64)node_end_pfn[nid] << PAGE_SHIFT, + (u64)size << PAGE_SHIFT, + LARGE_PAGE_BYTES); + if (node_kva == MEMBLOCK_ERROR) + panic("Can not get kva ram\n"); + + node_remap_size[nid] = size; + node_remap_offset[nid] = offset; + printk(KERN_DEBUG "Reserving %ld pages of KVA for lmem_map of node %d at %llx\n", + size, nid, node_kva >> PAGE_SHIFT); + + /* + * prevent kva address below max_low_pfn want it on system + * with less memory later. + * layout will be: KVA address , KVA RAM + * + * we are supposed to only record the one less then + * max_low_pfn but we could have some hole in high memory, + * and it will only check page_is_ram(pfn) && + * !page_is_reserved_early(pfn) to decide to use it as free. + * So memblock_x86_reserve_range here, hope we don't run out + * of that array + */ + memblock_x86_reserve_range(node_kva, + node_kva + ((u64)size << PAGE_SHIFT), + "KVA RAM"); + + node_remap_start_pfn[nid] = node_kva >> PAGE_SHIFT; + + return size; } static void init_remap_allocator(int nid) @@ -346,6 +340,7 @@ static void init_remap_allocator(int nid) void __init initmem_init(void) { + unsigned long reserve_pages = 0; int nid; /* @@ -359,7 +354,11 @@ void __init initmem_init(void) get_memcfg_numa(); numa_init_array(); - kva_pages = roundup(calculate_numa_remap_pages(), PTRS_PER_PTE); + for_each_online_node(nid) + reserve_pages += init_alloc_remap(nid, reserve_pages); + kva_pages = roundup(reserve_pages, PTRS_PER_PTE); + printk(KERN_INFO "Reserving total of %lx pages for numa KVA remap\n", + reserve_pages); kva_start_pfn = memblock_find_in_range(min_low_pfn << PAGE_SHIFT, max_low_pfn << PAGE_SHIFT,