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Make sure we insert and remove the PV entries related to unmanaged kernel

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mappings into the kernel pmap, not into the pmap related to the
pmap_enter_pv()/pmap_remove_pv() call.
This commit is contained in:
cognet 2010-03-21 21:03:35 +00:00
parent 11f35d5f24
commit 78363cb373
1 changed files with 5 additions and 3 deletions
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8
sys/arm/arm/pmap.c
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@ -1605,10 +1605,11 @@ pmap_enter_pv(struct vm_page *pg, struct pv_entry *pve, pmap_t pm,
pve->pv_flags = PVF_WRITE | PVF_UNMAN;
pg->md.pv_kva = 0;
if (!(km = PMAP_OWNED(pmap_kernel())))
PMAP_LOCK(pmap_kernel());
TAILQ_INSERT_HEAD(&pg->md.pv_list, pve, pv_list);
TAILQ_INSERT_HEAD(&pm->pm_pvlist, pve, pv_plist);
if ((km = PMAP_OWNED(pmap_kernel())))
PMAP_UNLOCK(pmap_kernel());
TAILQ_INSERT_HEAD(&pve->pv_pmap->pm_pvlist, pve, pv_plist);
PMAP_UNLOCK(pmap_kernel());
vm_page_unlock_queues();
if ((pve = pmap_get_pv_entry()) == NULL)
panic("pmap_kenter_internal: no pv entries");
@ -1712,6 +1713,7 @@ pmap_nuke_pv(struct vm_page *pg, pmap_t pm, struct pv_entry *pve)
pv = TAILQ_FIRST(&pg->md.pv_list);
if (pv != NULL && (pv->pv_flags & PVF_UNMAN) &&
TAILQ_NEXT(pv, pv_list) == NULL) {
pm = kernel_pmap;
pg->md.pv_kva = pv->pv_va;
/* a recursive pmap_nuke_pv */
TAILQ_REMOVE(&pg->md.pv_list, pv, pv_list);