diff options
Diffstat (limited to 'mm/page_alloc.c')
| -rw-r--r-- | mm/page_alloc.c | 28 |
1 files changed, 25 insertions, 3 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 0f267d9c73f..88b9962c99b 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -4905,9 +4905,17 @@ static void __init find_zone_movable_pfns_for_nodes(void) required_kernelcore = max(required_kernelcore, corepages); } - /* If kernelcore was not specified, there is no ZONE_MOVABLE */ - if (!required_kernelcore) + /* + * If neither kernelcore/movablecore nor movablemem_map is specified, + * there is no ZONE_MOVABLE. But if movablemem_map is specified, the + * start pfn of ZONE_MOVABLE has been stored in zone_movable_limit[]. + */ + if (!required_kernelcore) { + if (movablemem_map.nr_map) + memcpy(zone_movable_pfn, zone_movable_limit, + sizeof(zone_movable_pfn)); goto out; + } /* usable_startpfn is the lowest possible pfn ZONE_MOVABLE can be at */ usable_startpfn = arch_zone_lowest_possible_pfn[movable_zone]; @@ -4937,10 +4945,24 @@ restart: for_each_mem_pfn_range(i, nid, &start_pfn, &end_pfn, NULL) { unsigned long size_pages; + /* + * Find more memory for kernelcore in + * [zone_movable_pfn[nid], zone_movable_limit[nid]). + */ start_pfn = max(start_pfn, zone_movable_pfn[nid]); if (start_pfn >= end_pfn) continue; + if (zone_movable_limit[nid]) { + end_pfn = min(end_pfn, zone_movable_limit[nid]); + /* No range left for kernelcore in this node */ + if (start_pfn >= end_pfn) { + zone_movable_pfn[nid] = + zone_movable_limit[nid]; + break; + } + } + /* Account for what is only usable for kernelcore */ if (start_pfn < usable_startpfn) { unsigned long kernel_pages; @@ -5000,12 +5022,12 @@ restart: if (usable_nodes && required_kernelcore > usable_nodes) goto restart; +out: /* Align start of ZONE_MOVABLE on all nids to MAX_ORDER_NR_PAGES */ for (nid = 0; nid < MAX_NUMNODES; nid++) zone_movable_pfn[nid] = roundup(zone_movable_pfn[nid], MAX_ORDER_NR_PAGES); -out: /* restore the node_state */ node_states[N_MEMORY] = saved_node_state; } |