On Mon, Mar 10, 2014 at 7:59 PM, Arnd Bergmann <a...@arndb.de> wrote: >> arch/avr32/include/asm/io.h:#define IO_SPACE_LIMIT 0xffffffff >> arch/frv/include/asm/io.h:#define IO_SPACE_LIMIT 0xffffffff > > They have no MMU, and the code relies on the port number to match > both the virtual and the physical address. You could be right about > these, but I would guess that the code also needs some other > changes if we want to make it work on nommu kernels. It also depends > on whether the I/O bus address is the same as the CPU address, or > if it starts at bus address 0.
>> arch/m68k/include/asm/io_no.h:#define IO_SPACE_LIMIT 0xffffffff > > This looks like a mistake, it should be smaller io_no.h is for nommu. Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- ge...@linux-m68k.org In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/