Check for pte being NULL in return from pmap_pte_pde- unlikely or
even impossible, but it's better ot have a panic and a quiesced gcc4.2.
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@ -1645,6 +1645,9 @@ pmap_collect(pmap_t locked_pmap, struct vpgqueues *vpq)
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continue;
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pmap->pm_stats.resident_count--;
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pte = pmap_pte_pde(pmap, va, &ptepde);
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if (pte == NULL) {
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panic("null pte in pmap_collect");
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}
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tpte = pte_load_clear(pte);
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KASSERT((tpte & PG_W) == 0,
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("pmap_collect: wired pte %#lx", tpte));
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@ -2060,6 +2063,9 @@ pmap_remove_all(vm_page_t m)
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PMAP_LOCK(pmap);
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pmap->pm_stats.resident_count--;
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pte = pmap_pte_pde(pmap, pv->pv_va, &ptepde);
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if (pte == NULL) {
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panic("null pte in pmap_remove_all");
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}
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tpte = pte_load_clear(pte);
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if (tpte & PG_W)
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pmap->pm_stats.wired_count--;
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