On 6 July 2015 at 10:06, Michael S. Tsirkin <m...@redhat.com> wrote:
> On Mon, Jul 06, 2015 at 10:46:31AM +0200, Paolo Bonzini wrote:
>> Why host endian and not device (in this case little) endian?

> It's the endian of the originator of the transaction.
> And emulated device code is all compiled in host endian-ness.

But address_space_rw() is just the "memcpy bytes to the
target's memory" operation -- if you have a pile of bytes
then there are no endianness concerns. If you don't have
a pile of bytes then you need to know the structure of
the data you're DMAing around, and you should probably
have a loop doing things with the specify-the-width functions.

thanks
-- PMM

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