diff options
| author | alc <alc@FreeBSD.org> | 1999-07-03 06:33:48 +0000 |
|---|---|---|
| committer | alc <alc@FreeBSD.org> | 1999-07-03 06:33:48 +0000 |
| commit | 29ea153b133f29de1f76c8f87cdb0aa6300f6813 (patch) | |
| tree | f3a4cc0523e80c037532c075fb287d8c3ab46eb5 /sys/i386/isa/ipl.s | |
| parent | b6270032c16f447c90a1390dfde49f9918a6e2bc (diff) | |
| download | FreeBSD-src-29ea153b133f29de1f76c8f87cdb0aa6300f6813.zip FreeBSD-src-29ea153b133f29de1f76c8f87cdb0aa6300f6813.tar.gz | |
An SMP-specific change: Add the lock prefix to RMW operations
on ipending.
Diffstat (limited to 'sys/i386/isa/ipl.s')
| -rw-r--r-- | sys/i386/isa/ipl.s | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/sys/i386/isa/ipl.s b/sys/i386/isa/ipl.s index 66f31cf..51e8329 100644 --- a/sys/i386/isa/ipl.s +++ b/sys/i386/isa/ipl.s @@ -36,7 +36,7 @@ * * @(#)ipl.s * - * $Id: ipl.s,v 1.27 1999/05/06 09:44:54 bde Exp $ + * $Id: ipl.s,v 1.28 1999/06/01 18:20:15 jlemon Exp $ */ @@ -236,6 +236,7 @@ doreti_unpend: TEST_CIL /* we enter with cpl locked */ bsfl %ecx, %ecx /* slow, but not worth optimizing */ + lock btrl %ecx, _ipending jnc doreti_next2 /* some intr cleared memory copy */ cmpl $NHWI, %ecx @@ -377,7 +378,7 @@ swi_ast_phantom: */ cli ICPL_LOCK - orl $SWI_AST_PENDING, _ipending + MPLOCKED orl $SWI_AST_PENDING, _ipending /* cpl is unlocked in doreti_exit */ subl %eax,%eax #ifdef CPL_AND_CML |
