Re: vfio: failed to select IOMMU type

[Alejandro Lucero <alejandro.lucero@netronome.com>]

On Tue, Apr 4, 2017 at 5:20 PM, Burakov, Anatoly <anatoly.burakov@intel.com>
wrote:

> Hi Andrew,
>
> > Please, take a look at http://dpdk.org/dev/patchwork/patch/23202/
>
> I took a quick look. It should fix the problem (closing the group will
> cause container detachment, so we can always assume that if there's no
> container associated with the group, there are no devices within that
> group). The issue of vfio_release_device() still remains. I think the fix
> for that would closely follow what you did here: close the dev_fd, check if
> the group still has a container associated with it, and if not, close the
> group_fd and clear the group.
>
>
That could work. When implementing the hotplug I realize the kernel could
give more info about a particular group status. Maybe I propose some
changes for facilitating this, even if we can fix the issue just checking
if there is a container there.


> I cannot thoroughly test it right this moment, however I'll have time
> later during the week.
>
> Thanks,
> Anatoly
>