MemoryRegionSection *phys_page_find(target_phys_addr_t index) { PhysPageEntry lp = phys_map; PhysPageEntry *p; int i; uint16_t s_index = phys_section_unassigned; for (i = P_L2_LEVELS - 1; i >= 0 && !lp.is_leaf; i--) { if (lp.ptr == PHYS_MAP_NODE_NIL) { goto not_found; } p = phys_map_nodes[lp.ptr]; lp = p[(index >> (i * L2_BITS)) & (L2_SIZE - 1)]; } s_index = lp.ptr; not_found: return &phys_sections[s_index]; }