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	/* Allocate a page, to be used in a page table. */			/* Allocate a page, to be used in a page table. */
	static vm_offset_t			static vm_offset_t
	mmu_booke_alloc_page(pmap_t pmap, unsigned int idx, bool nosleep)			mmu_booke_alloc_page(pmap_t pmap, unsigned int idx, bool nosleep)
	{			{
	vm_page_t m;			vm_page_t m;
	int req;			int req;

	req = VM_ALLOC_NOOBJ \| VM_ALLOC_WIRED \| VM_ALLOC_ZERO;			req = VM_ALLOC_WIRED \| VM_ALLOC_ZERO;
	while ((m = vm_page_alloc(NULL, idx, req)) == NULL) {			while ((m = vm_page_alloc_noobj(req)) == NULL) {
	if (nosleep)			if (nosleep)
	return (0);			return (0);

	PMAP_UNLOCK(pmap);			PMAP_UNLOCK(pmap);
	rw_wunlock(&pvh_global_lock);			rw_wunlock(&pvh_global_lock);
	vm_wait(NULL);			vm_wait(NULL);
	rw_wlock(&pvh_global_lock);			rw_wlock(&pvh_global_lock);
	PMAP_LOCK(pmap);			PMAP_LOCK(pmap);
	}			}
				m->pindex = idx;
	if (!(m->flags & PG_ZERO))
	/* Zero whole ptbl. */
	mmu_booke_zero_page(m);

	return (PHYS_TO_DMAP(VM_PAGE_TO_PHYS(m)));			return (PHYS_TO_DMAP(VM_PAGE_TO_PHYS(m)));
	}			}

	/* Initialize pool of kva ptbl buffers. */			/* Initialize pool of kva ptbl buffers. */
	static void			static void
	ptbl_init(void)			ptbl_init(void)
	{			{
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