diff options
| -rw-r--r-- | kern/mach_clock.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/kern/mach_clock.c b/kern/mach_clock.c index 04a3115..4ba7c08 100644 --- a/kern/mach_clock.c +++ b/kern/mach_clock.c @@ -91,7 +91,7 @@ int bigadj = 1000000; /* adjust 10*tickadj if adjustment * } while (secs != mtime->check_seconds); * to read the time correctly. (On a multiprocessor this assumes * that processors see each other's writes in the correct order. - * We may have to insert fence operations.) + * We have to insert write fence operations.) FIXME */ mapped_time_value_t *mtime = 0; @@ -100,7 +100,9 @@ mapped_time_value_t *mtime = 0; MACRO_BEGIN \ if (mtime != 0) { \ mtime->check_seconds = (time)->seconds; \ + asm volatile("":::"memory"); \ mtime->microseconds = (time)->microseconds; \ + asm volatile("":::"memory"); \ mtime->seconds = (time)->seconds; \ } \ MACRO_END |