memcpy alignment

[Jon Masters]

On 12/15/2015 04:34 AM, Catalin Marinas wrote:
> On Mon, Dec 14, 2015 at 11:11:02PM -0500, Jon Masters wrote:
>> What's supposed to happen if the natural alignment of the pointers dst
>> and src is not the same? We don't seem to handle that case today, and
>> instead will base our access data type on the source alignment only.
> 
> The hardware takes care of the other one. The memcpy behaviour in the
> kernel is the same as the glibc one (the Cortex Strings library).

Not if you're dealing with Device memory. I accept that one could always
ensure that there's a non-Device mapping (I got the other replies) but I
don't think it's unreasonable to expect a memcpy to work in the presence
of misaligned addresses either.

Jon.