---

yaml --- r: 99458 b: refs/heads/master c: fa3d319 h: refs/heads/master v: v3
git-mirror · Jun 26, 2008 · 4abafdf · 4abafdf
1 parent 3131dc8
commit 4abafdf
Show file tree

Hide file tree

Showing 2 changed files with 3 additions and 3 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 037a6079eb925f7653bddf1501f777abcd4fc91e
+refs/heads/master: fa3d319ac6f648dc51cb672a31f482c80a8c2457
diff --git a/trunk/arch/x86/kernel/pci-gart_64.c b/trunk/arch/x86/kernel/pci-gart_64.c
@@ -824,10 +824,10 @@ void __init gart_iommu_init(void)
 	wbinvd();
 
 	/*
-	 * Try to workaround a bug (thanks to BenH)
+	 * Try to workaround a bug (thanks to BenH):
 	 * Set unmapped entries to a scratch page instead of 0.
 	 * Any prefetches that hit unmapped entries won't get an bus abort
-	 * then.
+	 * then. (P2P bridge may be prefetching on DMA reads).
 	 */
 	scratch = get_zeroed_page(GFP_KERNEL);
 	if (!scratch)