diff options
| author | Miod Vallat <miod@cvs.openbsd.org> | 2007-06-20 17:29:37 +0000 |
|---|---|---|
| committer | Miod Vallat <miod@cvs.openbsd.org> | 2007-06-20 17:29:37 +0000 |
| commit | eb665c5ca5fbea0bffcae85a3186d4fa212e3950 (patch) | |
| tree | 640d10bab9da04b14672894700fa4345b3ba5213 /sys/arch/sparc | |
| parent | 98769c6ed17b76aa17508f5c952d51e63c956c96 (diff) | |
In vunmapbuf(), explicitely remove mappings before invoking uvm_km_free().
Even if the latter would end up removing the mappings by itself, it would
do so using pmap_remove() because phys_map is not intrsafe; but some
platforms use pmap_kenter_pa() in vmapbuf(). By removing the mappings
ourselves, we can ensure the remove function used matches the enter function
which has been used.
Discussed and theoretical ok art@
Diffstat (limited to 'sys/arch/sparc')
| -rw-r--r-- | sys/arch/sparc/sparc/vm_machdep.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/sys/arch/sparc/sparc/vm_machdep.c b/sys/arch/sparc/sparc/vm_machdep.c index a71f30adb97..73bbdfb1b45 100644 --- a/sys/arch/sparc/sparc/vm_machdep.c +++ b/sys/arch/sparc/sparc/vm_machdep.c @@ -1,4 +1,4 @@ -/* $OpenBSD: vm_machdep.c,v 1.48 2007/05/27 20:59:26 miod Exp $ */ +/* $OpenBSD: vm_machdep.c,v 1.49 2007/06/20 17:29:36 miod Exp $ */ /* $NetBSD: vm_machdep.c,v 1.30 1997/03/10 23:55:40 pk Exp $ */ /* @@ -329,6 +329,8 @@ vunmapbuf(bp, sz) off = (vaddr_t)bp->b_data - kva; size = round_page(sz + off); + pmap_remove(pmap_kernel(), kva, kva + size); + pmap_update(pmap_kernel()); uvm_km_free_wakeup(kernel_map, kva, size); bp->b_data = bp->b_saveaddr; bp->b_saveaddr = NULL; |