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/vax | |
| 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/vax')
| -rw-r--r-- | sys/arch/vax/vax/vm_machdep.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/sys/arch/vax/vax/vm_machdep.c b/sys/arch/vax/vax/vm_machdep.c index 545f2ccbf76..7205101225d 100644 --- a/sys/arch/vax/vax/vm_machdep.c +++ b/sys/arch/vax/vax/vm_machdep.c @@ -1,4 +1,4 @@ -/* $OpenBSD: vm_machdep.c,v 1.33 2007/05/27 20:59:26 miod Exp $ */ +/* $OpenBSD: vm_machdep.c,v 1.34 2007/06/20 17:29:36 miod Exp $ */ /* $NetBSD: vm_machdep.c,v 1.67 2000/06/29 07:14:34 mrg Exp $ */ /* @@ -319,6 +319,8 @@ vunmapbuf(bp, len) addr = trunc_page((vaddr_t)bp->b_data); off = (vaddr_t)bp->b_data - addr; len = round_page(off + len); + pmap_remove(vm_map_pmap(phys_map), addr, addr + len); + pmap_update(vm_map_pmap(phys_map)); uvm_km_free_wakeup(phys_map, addr, len); bp->b_data = bp->b_saveaddr; bp->b_saveaddr = NULL; |