Re: [dpdk-dev] [PATCH] vhost-user: enable virtio 1.0

[Thomas Monjalon <thomas.monjalon@6wind.com>]

2015-10-18 10:04, Michael S. Tsirkin:
> On Fri, Oct 16, 2015 at 02:52:30PM +0100, Bruce Richardson wrote:
> > On Thu, Oct 15, 2015 at 04:18:59PM +0300, Michael S. Tsirkin wrote:
> > > On Thu, Oct 15, 2015 at 02:08:39PM +0300, Marcel Apfelbaum wrote:
> > > > Make vhost-user virtio 1.0 compatible by adding it to the
> > > > supported features and keeping the header length
> > > > the same as for mergeable RX buffers.
> > > > 
> > > > Signed-off-by: Marcel Apfelbaum <marcel@redhat.com>
> > > 
> > > Looks good to me
> > > 
> > > Acked-by: Michael S. Tsirkin <mst@redhat.com>
> > > 
> > > Just one question: dpdk is only supported on little-endian
> > > platforms at the moment, right?
> > 
> > A recent release added in support for PPC (patches supplied by IBM). For 
> > example, see: 
> > http://dpdk.org/browse/dpdk/commit/?id=704ba3770032c5a901719d3837845581d5a56b58
> > 
> > /Bruce
> 
> This will require more work then as 1.0 is a different
> endian-ness from 0.9. It's up to you guys to decide
> whether correct BE support is now a requirement for all
> new dpdk code. Let us know.

I'm not sure to understand.
Yes DPDK must work on big endian platforms.
Does this patch prevent from using virtio 0.9 with big endian?
Does it work with old QEMU not supporting virtio 1.0?