diff options
Diffstat (limited to 'sys/i386/xen/pmap.c')
| -rw-r--r-- | sys/i386/xen/pmap.c | 32 |
1 files changed, 29 insertions, 3 deletions
diff --git a/sys/i386/xen/pmap.c b/sys/i386/xen/pmap.c index ae4d4aa..40e36be 100644 --- a/sys/i386/xen/pmap.c +++ b/sys/i386/xen/pmap.c @@ -3718,6 +3718,34 @@ pmap_is_prefaultable(pmap_t pmap, vm_offset_t addr) return (rv); } +boolean_t +pmap_is_referenced(vm_page_t m) +{ + pv_entry_t pv; + pt_entry_t *pte; + pmap_t pmap; + boolean_t rv; + + rv = FALSE; + if (m->flags & PG_FICTITIOUS) + return (rv); + sched_pin(); + mtx_assert(&vm_page_queue_mtx, MA_OWNED); + TAILQ_FOREACH(pv, &m->md.pv_list, pv_list) { + pmap = PV_PMAP(pv); + PMAP_LOCK(pmap); + pte = pmap_pte_quick(pmap, pv->pv_va); + rv = (*pte & (PG_A | PG_V)) == (PG_A | PG_V); + PMAP_UNLOCK(pmap); + if (rv) + break; + } + if (*PMAP1) + PT_SET_MA(PADDR1, 0); + sched_unpin(); + return (rv); +} + void pmap_map_readonly(pmap_t pmap, vm_offset_t va, int len) { @@ -4145,10 +4173,8 @@ pmap_mincore(pmap_t pmap, vm_offset_t addr) */ vm_page_lock_queues(); if ((m->flags & PG_REFERENCED) || - pmap_ts_referenced(m)) { + pmap_is_referenced(m)) val |= MINCORE_REFERENCED_OTHER; - vm_page_flag_set(m, PG_REFERENCED); - } vm_page_unlock_queues(); } } |
