On Wed, Oct 26, 2022 at 03:31:33PM -0600, Alex Williamson wrote: > On Tue, 25 Oct 2022 15:50:45 -0300 > Jason Gunthorpe <jgg@xxxxxxxxxx> wrote: > > > If the VFIO container is compiled out, give a kconfig option for iommufd > > to provide the miscdev node with the same name and permissions as vfio > > uses. > > > > The compatibility node supports the same ioctls as VFIO and automatically > > enables the VFIO compatible pinned page accounting mode. > > I think I'd like to see some sort of breadcrumb when /dev/vfio/vfio is > provided by something other than the vfio container code. If we intend > to include this before P2P is resolved, that breadcrumb I don't belive I can get P2P done soon enough. I plan to do it after this is merged. Right now these two series are taking all my time. > (dmesg I'm guessing) might also list any known limitations of the > compatibility to save time with debugging. Thanks, Yes, that makes sense. Do you want a dmesg at module load time, on every open, or a sysfs something? What seems like it would make it into a bug report? Thanks, Jason
