---

yaml --- r: 18610 b: refs/heads/master c: ee408c7 h: refs/heads/master v: v3
git-mirror · Jan 16, 2006 · 72fccd6 · 72fccd6
1 parent 0d4a1aa
commit 72fccd6
Show file tree

Hide file tree

Showing 2 changed files with 6 additions and 14 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 142a64a650fa5786c2ecea3de5ae3d5a2de72312
+refs/heads/master: ee408c79420b6a437332d6977fe33ab72c36dc97
diff --git a/trunk/arch/x86_64/mm/init.c b/trunk/arch/x86_64/mm/init.c
@@ -262,19 +262,11 @@ static void __init find_early_table_space(unsigned long end)
 	tables = round_up(puds * sizeof(pud_t), PAGE_SIZE) +
 		 round_up(pmds * sizeof(pmd_t), PAGE_SIZE);
 
-	/* Put page tables beyond the DMA zones if possible.
-	   RED-PEN might be better to spread them out more over
-	   memory to avoid hotspots */
-	if (end > MAX_DMA32_PFN<<PAGE_SHIFT)
-		start = MAX_DMA32_PFN << PAGE_SHIFT;
-	else if (end > MAX_DMA_PFN << PAGE_SHIFT)
-		start = MAX_DMA_PFN << PAGE_SHIFT;
-	else
-		start = 0x8000;
-
-	table_start = find_e820_area(start, end, tables);
-	if (table_start == -1)
-		table_start = find_e820_area(0x8000, end, tables);
+ 	/* RED-PEN putting page tables only on node 0 could
+ 	   cause a hotspot and fill up ZONE_DMA. The page tables
+ 	   need roughly 0.5KB per GB. */
+ 	start = 0x8000;
+ 	table_start = find_e820_area(start, end, tables);
 	if (table_start == -1UL)
 		panic("Cannot find space for the kernel page tables");