diff options
Diffstat (limited to 'sys/arm/arm/pmap.c')
| -rw-r--r-- | sys/arm/arm/pmap.c | 22 |
1 files changed, 19 insertions, 3 deletions
diff --git a/sys/arm/arm/pmap.c b/sys/arm/arm/pmap.c index ce4efae2d778..366b43fe3e1b 100644 --- a/sys/arm/arm/pmap.c +++ b/sys/arm/arm/pmap.c @@ -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); @@ -4491,6 +4493,20 @@ pmap_clear_modify(vm_page_t m) /* + * pmap_is_referenced: + * + * Return whether or not the specified physical page was referenced + * in any physical maps. + */ +boolean_t +pmap_is_referenced(vm_page_t m) +{ + + return ((m->flags & (PG_FICTITIOUS | PG_UNMANAGED)) == 0 && + (m->md.pvh_attrs & PVF_REF) != 0); +} + +/* * pmap_clear_reference: * * Clear the reference bit on the specified physical page. |