NUMA-Q: mem_map placement

PATCH New William Lee Irwin III 1 participant 1 message Nov 12, 2002

Share & tools

William Lee Irwin III

author

2002-11-12 02:16 UTC #0 lore raw

PATCH 6/9 NUMA-Q: mem_map placement

This moves the allocation of the local memory maps (accomplished by passing the virtual address of the virtual remapped arena) so that there is a gap of size (sizeof(pg_data_t) + PAGE_SIZE - 1) & PAGE_MASK between node_remap_start_vaddr[nid] and NODE_DATA(nid)->node_mem_map.

 discontig.c |   15 ++++++++++-----
 1 files changed, 10 insertions(+), 5 deletions(-)

arch/i386/mm/discontig.c +10 -5

diff -urpN 04_larger_remap/arch/i386/mm/discontig.c 05_memmap_after/arch/i386/mm/discontig.c
@@ -318,13 +318,18 @@ void __init zone_sizes_init(void)
 		 * normal bootmem allocator, but other nodes come from the
 		 * remapped KVA area - mbligh
 		 */
-		if (nid)
-			free_area_init_node(nid, NODE_DATA(nid), 
-				node_remap_start_vaddr[nid], zones_size, 
-				start, 0);
-		else
+		if (!nid)
 			free_area_init_node(nid, NODE_DATA(nid), 0, 
 				zones_size, start, 0);
+		else {
+			unsigned long lmem_map;
+			lmem_map = (unsigned long)node_remap_start_vaddr[nid];
+			lmem_map += sizeof(pg_data_t) + PAGE_SIZE - 1;
+			lmem_map &= PAGE_MASK;
+			free_area_init_node(nid, NODE_DATA(nid), 
+				(struct page *)lmem_map, zones_size, 
+				start, 0);
+		}
 	}
 	return;
 }