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| author | jeff <jeff@FreeBSD.org> | 2003-10-01 08:52:46 +0000 |
|---|---|---|
| committer | jeff <jeff@FreeBSD.org> | 2003-10-01 08:52:46 +0000 |
| commit | 346aa00460c32f3801e19d703cfcdc12ef89c75d (patch) | |
| tree | 83276da6b671e1b7233ea73f86513a498e84a97c /sys/i386 | |
| parent | e7ebf2c29a49deea4eaab17c9af60539b957ba24 (diff) | |
| download | FreeBSD-src-346aa00460c32f3801e19d703cfcdc12ef89c75d.zip FreeBSD-src-346aa00460c32f3801e19d703cfcdc12ef89c75d.tar.gz | |
- 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
Diffstat (limited to 'sys/i386')
| -rw-r--r-- | sys/i386/i386/support.s | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/sys/i386/i386/support.s b/sys/i386/i386/support.s index b03f1dc..a55cc93 100644 --- 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 |
