diff options
| author | alc <alc@FreeBSD.org> | 1999-03-05 08:05:44 +0000 |
|---|---|---|
| committer | alc <alc@FreeBSD.org> | 1999-03-05 08:05:44 +0000 |
| commit | f5c5ee7c748944f91d946429a694d8592e912801 (patch) | |
| tree | 43459379dc8890dbe3aff07df14813ebfad87ec0 | |
| parent | 5306f681cbc74a3458faaebd7870cbc4baa7745b (diff) | |
| download | FreeBSD-src-f5c5ee7c748944f91d946429a694d8592e912801.zip FreeBSD-src-f5c5ee7c748944f91d946429a694d8592e912801.tar.gz | |
Fix an SMP-only TLB invalidation bug. Specifically, disable
a TLB invalidation optimization that won't work given the
limitations of our current SMP support.
This patch should be applied to -stable ASAP.
Thanks to John Capo <jc@irbs.com>,
Steve Kargl <sgk@troutmask.apl.washington.edu>, and
Chuck Robey <chuckr@mat.net>
for testing.
| -rw-r--r-- | sys/amd64/amd64/pmap.c | 6 | ||||
| -rw-r--r-- | sys/i386/i386/pmap.c | 6 |
2 files changed, 10 insertions, 2 deletions
diff --git a/sys/amd64/amd64/pmap.c b/sys/amd64/amd64/pmap.c index b689fd4..498f653 100644 --- a/sys/amd64/amd64/pmap.c +++ b/sys/amd64/amd64/pmap.c @@ -39,7 +39,7 @@ * SUCH DAMAGE. * * from: @(#)pmap.c 7.7 (Berkeley) 5/12/91 - * $Id: pmap.c,v 1.222 1999/01/28 01:59:50 dillon Exp $ + * $Id: pmap.c,v 1.223 1999/02/19 14:25:33 luoqi Exp $ */ /* @@ -1991,11 +1991,15 @@ pmap_remove_all(pa) if (pmap_track_modified(pv->pv_va)) vm_page_dirty(ppv->pv_vm_page); } +#ifdef SMP + update_needed = 1; +#else if (!update_needed && ((!curproc || (vmspace_pmap(curproc->p_vmspace) == pv->pv_pmap)) || (pv->pv_pmap == kernel_pmap))) { update_needed = 1; } +#endif TAILQ_REMOVE(&pv->pv_pmap->pm_pvlist, pv, pv_plist); TAILQ_REMOVE(&ppv->pv_list, pv, pv_list); diff --git a/sys/i386/i386/pmap.c b/sys/i386/i386/pmap.c index b689fd4..498f653 100644 --- a/sys/i386/i386/pmap.c +++ b/sys/i386/i386/pmap.c @@ -39,7 +39,7 @@ * SUCH DAMAGE. * * from: @(#)pmap.c 7.7 (Berkeley) 5/12/91 - * $Id: pmap.c,v 1.222 1999/01/28 01:59:50 dillon Exp $ + * $Id: pmap.c,v 1.223 1999/02/19 14:25:33 luoqi Exp $ */ /* @@ -1991,11 +1991,15 @@ pmap_remove_all(pa) if (pmap_track_modified(pv->pv_va)) vm_page_dirty(ppv->pv_vm_page); } +#ifdef SMP + update_needed = 1; +#else if (!update_needed && ((!curproc || (vmspace_pmap(curproc->p_vmspace) == pv->pv_pmap)) || (pv->pv_pmap == kernel_pmap))) { update_needed = 1; } +#endif TAILQ_REMOVE(&pv->pv_pmap->pm_pvlist, pv, pv_plist); TAILQ_REMOVE(&ppv->pv_list, pv, pv_list); |
