On Mon, Jan 18, 2010 at 7:41 PM, Michael S. Tsirkin <m...@redhat.com> wrote: > On Mon, Jan 18, 2010 at 07:53:25PM +0200, Michael S. Tsirkin wrote: >> On Mon, Jan 18, 2010 at 05:50:35PM +0000, Blue Swirl wrote: >> > On Mon, Jan 18, 2010 at 10:56 AM, Michael S. Tsirkin <m...@redhat.com> >> > wrote: >> > > Alexander, so I assume the following patchset should be enough for you >> > > to implement u3 support, simply by creating your own rwhandler, and >> > > using pci_data_read/write directly there. I have pushed it to a >> > > temporary branch in my tree: >> > > git://git.kernel.org/pub/scm/linux/kernel/git/mst/qemu.git rwhandler >> > > >> > > Paul, any comments on this approach? >> > > >> > > I'll push this to my pci tree if this turns out to be helpful. >> > > Hope this helps, and sorry about the churn. >> > >> > I proposed earlier something similar for MMIO. The thread could be >> > interesting: >> > http://lists.gnu.org/archive/html/qemu-devel/2009-05/msg00095.html >> >> IIUC that patch seems to do much more, and also seems to involve all io? >> This one is just a library that devices can use. Intended users are not >> performance-critical like pci config. > > To put it in other words: could you please be more explicit please? I > failed to see the relevance ...
Well, I thought the stuff I proposed earlier may be useful for comparison. It was also opt-in like yours, by the way. Also the end result that Paul wasn't interested in my patch may (or may not) be relevant with yours too.
