DMABOUNCE in pci-rcar

[Geert Uytterhoeven]

Hi Russell,

On Thu, Mar 20, 2014 at 7:39 PM, Russell King - ARM Linux
<linux at arm.linux.org.uk> wrote:
> That all said, what I find most annoying is that Ben has ignored my
> question about exactly what the nature of the limitation is on this
> platform.  My response to that is - if you're not going to do the
> curtesy of answering such a simple question, then you don't get to
> patch the kernel for this problem.

Ben did answer:
"If the window is set to 2GiB it can only access 2GiB aligned to 2GiB
 boundary, however DRAM spans a 2GiB boundary (being at 1-3GiB)"

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert at 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