diff options
| -rw-r--r-- | mm/page_alloc.c | 71 |
1 files changed, 33 insertions, 38 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index db1ff4a..c26d315 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -5450,6 +5450,30 @@ void __ref build_all_zonelists(pg_data_t *pgdat) #endif } +/* If zone is ZONE_MOVABLE but memory is mirrored, it is an overlapped init */ +static bool __meminit +overlap_memmap_init(unsigned long zone, unsigned long *pfn) +{ +#ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP + static struct memblock_region *r; + + if (mirrored_kernelcore && zone == ZONE_MOVABLE) { + if (!r || *pfn >= memblock_region_memory_end_pfn(r)) { + for_each_memblock(memory, r) { + if (*pfn < memblock_region_memory_end_pfn(r)) + break; + } + } + if (*pfn >= memblock_region_memory_base_pfn(r) && + memblock_is_mirror(r)) { + *pfn = memblock_region_memory_end_pfn(r); + return true; + } + } +#endif + return false; +} + /* * Initially all pages are reserved - free ones are freed * up by free_all_bootmem() once the early boot process is @@ -5459,12 +5483,8 @@ void __meminit memmap_init_zone(unsigned long size, int nid, unsigned long zone, unsigned long start_pfn, enum memmap_context context, struct vmem_altmap *altmap) { - unsigned long end_pfn = start_pfn + size; - unsigned long pfn; + unsigned long pfn, end_pfn = start_pfn + size; struct page *page; -#ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP - struct memblock_region *r = NULL, *tmp; -#endif if (highest_memmap_pfn < end_pfn - 1) highest_memmap_pfn = end_pfn - 1; @@ -5492,39 +5512,17 @@ void __meminit memmap_init_zone(unsigned long size, int nid, unsigned long zone, * There can be holes in boot-time mem_map[]s handed to this * function. They do not exist on hotplugged memory. */ - if (context != MEMMAP_EARLY) - goto not_early; - - if (!early_pfn_valid(pfn)) - continue; - if (!early_pfn_in_nid(pfn, nid)) - continue; - -#ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP - /* - * Check given memblock attribute by firmware which can affect - * kernel memory layout. If zone==ZONE_MOVABLE but memory is - * mirrored, it's an overlapped memmap init. skip it. - */ - if (mirrored_kernelcore && zone == ZONE_MOVABLE) { - if (!r || pfn >= memblock_region_memory_end_pfn(r)) { - for_each_memblock(memory, tmp) - if (pfn < memblock_region_memory_end_pfn(tmp)) - break; - r = tmp; - } - if (pfn >= memblock_region_memory_base_pfn(r) && - memblock_is_mirror(r)) { - /* already initialized as NORMAL */ - pfn = memblock_region_memory_end_pfn(r); + if (context == MEMMAP_EARLY) { + if (!early_pfn_valid(pfn)) continue; - } + if (!early_pfn_in_nid(pfn, nid)) + continue; + if (overlap_memmap_init(zone, &pfn)) + continue; + if (defer_init(nid, pfn, end_pfn)) + break; } -#endif - if (defer_init(nid, pfn, end_pfn)) - break; -not_early: page = pfn_to_page(pfn); __init_single_page(page, pfn, zone, nid); if (context == MEMMAP_HOTPLUG) @@ -5541,9 +5539,6 @@ not_early: * can be created for invalid pages (for alignment) * check here not to call set_pageblock_migratetype() against * pfn out of zone. - * - * Please note that MEMMAP_HOTPLUG path doesn't clear memmap - * because this is done early in sparse_add_one_section */ if (!(pfn & (pageblock_nr_pages - 1))) { set_pageblock_migratetype(page, MIGRATE_MOVABLE); |
