Re: [dpdk-dev] [PATCH 1/4] vhost: handle VHOST_USER_SET_LOG_BASE request

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

2015-12-07 10:18, Yuanhan Liu:
> On Mon, Dec 07, 2015 at 03:03:24AM +0100, Thomas Monjalon wrote:
> > 2015-12-07 10:00, Yuanhan Liu:
> > > On Mon, Dec 07, 2015 at 12:07:28AM +0100, Thomas Monjalon wrote:
> > > > 2015-12-02 15:53, Panu Matilainen:
> > > > > This (and other changes in patch 2 breaks the librte_vhost ABI again, so 
> > > > > you'd need to at least add a deprecation note to 2.2 to be able to do it 
> > > > > in 2.3 at all according to the ABI policy.
> > > > > 
> > > > > Perhaps a better option would be adding some padding to the structs now 
> > > > > for 2.2 since the vhost ABI is broken there anyway. That would at least 
> > > > > give a chance to keep it compatible from 2.2 to 2.3.
> > > > 
> > > > Please could you point where the vhost ABI is broken in 2.2?
> > > 
> > > Thomas, here are the changes to rte_virtio_net.h:
> > > 
> > > 
> > > $ git diff 381316f6a225139d22d39b5ab8d50c40607924ca..19d4d7ef2a216b5418d8edb5b004d1a58bba3cc1 \
> > >       -- lib/librte_vhost/rte_virtio_net.h >
> > [...]
> > 
> > The problem is that the changes are not noticed in the release notes
> > and the LIBABIVER is still 1.
> 
> Yeah, my bad. Firstly, I was not aware of it's an ABI change. Secondly,
> I was landed to this team in the middle of v2.2 release, so that I have
> limited experience of how those works in DPDK community.
> 
> Anyway, it's my fault. I should have realized that in the first time.

No it's not your fault, and it does not matter who is responsible.

> Should I send a patch to update LIBABIVER to 2 and update release note
> now?

Yes today or tomorrow please.