- Add a memory barrier before the sse2_pagezero() function returns. This

code uses write combining which must be committed to memory prior to other uses of this page. Spotted by: alc
2003-10-01 08:52:46 +00:00 · 2003-10-01 08:52:46 +00:00 · 346aa00460
commit 346aa00460
parent e7ebf2c29a
1 changed files with 1 additions and 0 deletions
--- a/sys/i386/i386/support.s
+++ b/sys/i386/i386/support.s
@ -361,6 +361,7 @@ ENTRY(sse2_pagezero)
 	addl	$4,%ecx
 	cmpl	%ecx,%eax
 	jne	1b
+	sfence
 	popl	%ebx
 	ret