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 -- David Marchand
