x86: extend e820 early_res support 32bit -fix #4
reserve_early pgdata for 32bit numa
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/arch/x86/mm/discontig_32.c b/arch/x86/mm/discontig_32.c
index 914ccf9..4774972 100644
--- a/arch/x86/mm/discontig_32.c
+++ b/arch/x86/mm/discontig_32.c
@@ -159,8 +159,13 @@
if (nid && node_has_online_mem(nid))
NODE_DATA(nid) = (pg_data_t *)node_remap_start_vaddr[nid];
else {
- NODE_DATA(nid) = (pg_data_t *)(pfn_to_kaddr(min_low_pfn));
- min_low_pfn += PFN_UP(sizeof(pg_data_t));
+ unsigned long pgdat_phys;
+ pgdat_phys = find_e820_area(min_low_pfn<<PAGE_SHIFT,
+ max_low_pfn<<PAGE_SHIFT, sizeof(pg_data_t),
+ PAGE_SIZE);
+ NODE_DATA(nid) = (pg_data_t *)(pfn_to_kaddr(pgdat_phys>>PAGE_SHIFT));
+ reserve_early(pgdat_phys, pgdat_phys + sizeof(pg_data_t),
+ "NODE_DATA");
}
}