diff options
| -rw-r--r-- | sys/alpha/alpha/pmap.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/sys/alpha/alpha/pmap.c b/sys/alpha/alpha/pmap.c index 7bf6174..6a094df 100644 --- a/sys/alpha/alpha/pmap.c +++ b/sys/alpha/alpha/pmap.c @@ -1629,7 +1629,8 @@ pmap_protect(pmap_t pmap, vm_offset_t sva, vm_offset_t eva, vm_prot_t prot) oldpte |= (PG_FOR | PG_FOE); } if ((oldpte & PG_FOW) == 0) { - m = PHYS_TO_VM_PAGE(pmap_pte_pa(pte)); + if (m == NULL) + m = PHYS_TO_VM_PAGE(pmap_pte_pa(pte)); if (pmap_track_modified(sva)) vm_page_dirty(m); oldpte |= PG_FOW; |
