On Thu, Aug 06, 2015 at 04:59:15PM +0200, Marc Marí wrote: > On Thu, 6 Aug 2015 10:47:21 -0400 > "Kevin O'Connor" <ke...@koconnor.net> wrote: > > Also, it's very unusual to see 32bit writes to an unaligned IO address > > - I think two pad bytes should be added so that the offset for the dma > > address is at position 4 (instead of 2). > > This is a PIO port (out), not a MMIO access (write). Maybe I'm wrong, > but I don't think it matters to have the port number aligned with the > write size.
There was a thread on misaligned IO accesses recently: http://lists.nongnu.org/archive/html/qemu-devel/2015-07/msg05054.html Perhaps Stefan knows what the implications of misaligned IO writes are. I suspect it's better to avoid them. -Kevin
