rem: return AE_OK;
add: return (area > 0 ? AE_OK : AE_BAD_ADDRESS);
context: AcpiOsMapMemory (    ACPI_PHYSICAL_ADDRESS   where,    ACPI_SIZE               length,    void                    **there){#ifdef _KERNEL_MODE	unsigned page_offset = (unsigned int)ACPI_TO_POINTER(where) % B_PAGE_SIZE;	void *map_base = ACPI_TO_POINTER(where) - page_offset;	    map_physical_memory("acpi_physical_mem_area", map_base, ROUNDUP(length + page_offset,B_PAGE_SIZE),B_ANY_KERNEL_BLOCK_ADDRESS,0,there);		there += page_offset;#endif    return AE_OK;}