25/11/2019 13:58, Burakov, Anatoly: > On 25-Nov-19 12:36 PM, David Marchand wrote: > > On Mon, Nov 25, 2019 at 1:03 PM Ferruh Yigit <ferruh.yi...@intel.com> wrote: > >>>> I would like to get your comment on the issue. > >>>> > >>>> For the OvS mode, hopefully binding the device to 'vfio-pci' > >>>> can be a solution, but for the cases we don't have that option, > >>>> can/should we force the DPDK to PA mode after initialization? > >>> > >>> I think this is expected, because VA is the new default since 19.08: > >>> http://doc.dpdk.org/guides/rel_notes/release_19_08.html#new-features > >>> > >>> In case, there is no constraint on initialization, > >>> we have to decide which mode is preferred. > >>> Previously PA was preferred. > >>> For the sake of modernity (and because it fits with some new devices), > >>> the preference has been changed to VA. > >>> > >>> If igb_uio device is used at initialization, > >>> the PA mode should be used. > >>> If igb_uio (PA-only) device is hotplugged, no luck! > >>> If VA-only device is hotplugged, it works! > >>> > >>> I think this change is one step in deprecating igb_uio. > >>> > >> > >> I just want to confirm/clarify that this behavior change is by design, not > >> a defect. > >> Should we document this behavior change more clearly, or highlight more, > >> to not > >> let catch others too? > > > > The behavior change happened with: > > https://git.dpdk.org/dpdk/commit?id=bbe29a9bd7ab6feab9a52051c32092a94ee886eb > > And there is an entry in the 19.08 release notes: > > http://doc.dpdk.org/guides/rel_notes/release_19_08.html#new-features > > > > > > Should we perhaps also provide LTS release notes, i.e. "all changes > since last LTS"? I think it's unreasonable to expect people using LTS's > to trace through every release notes between LTS's.
I don't think it is unreasonable. There are only 4 releases since last LTS. But I am OK for switching to 3 releases per year :)
