rem: TRACE(("page_compare_func: p 0x%x, key 0x%x\n", page, key));
add: TRACE(("page_compare_func: page %p, key %p\n", page, key));
context: page_compare_func(void *_p, const void *_key){	vm_page *page = _p;	const struct page_lookup_key *key = _key;	TRACE(("page_compare_func: p 0x%x, key 0x%x\n", page, key));	if (page->cache == key->cache && page->offset == key->offset)		return 0;	return -1;}