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Don't forget to clear the PG_WRITEABLE flag when appropriate.

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cognet 2004-11-13 14:54:31 +00:00
parent ef36741f45
commit 07e2ed965f
1 changed files with 6 additions and 0 deletions
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6
sys/arm/arm/pmap.c
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@ -1668,6 +1668,8 @@ pmap_clearbit(struct vm_page *pg, u_int maskbits)
simple_unlock(&pg->mdpage.pvh_slock);
PMAP_HEAD_TO_MAP_UNLOCK();
#endif
if (maskbits & PVF_WRITE)
vm_page_flag_clear(pg, PG_WRITEABLE);
return (count);
}
@ -1789,6 +1791,8 @@ pmap_nuke_pv(struct vm_page *pg, pmap_t pm, struct pv_entry *pve)
pg->md.urw_mappings--;
else
pg->md.uro_mappings--;
if (TAILQ_FIRST(&pg->md.pv_list) == NULL)
vm_page_flag_clear(pg, PG_WRITEABLE);
}
static struct pv_entry *
@ -3691,6 +3695,7 @@ pmap_remove(pmap_t pm, vm_offset_t sva, vm_offset_t eva)
pmap_acquire_pmap_lock(pm);
#endif
vm_page_lock_queues();
pmap_update(pm);
if (!pmap_is_current(pm)) {
cleanlist_idx = PMAP_REMOVE_CLEAN_LIST_SIZE + 1;
@ -3847,6 +3852,7 @@ pmap_remove(pmap_t pm, vm_offset_t sva, vm_offset_t eva)
pmap_free_l2_bucket(pm, l2b, mappings);
}
vm_page_unlock_queues();
if (flushall)
cpu_tlb_flushID();
#if 0