On 11/03/2019 20:50, Hans van Kranenburg wrote: > On 3/11/19 7:34 AM, Juergen Gross wrote: >> >> I'm not sure. Patch 3 of this series is basically already there (see >> commit c6d4381220a0087ce19dbf6984d92c451bd6b364). So maybe all we need >> is patch 4, which should really be easy to do? >> >> Hans, could you give it a try? You'd need to use a 4.20 kernel at least. >> I can do the official patch posting in case you confirm it working. > > Ehm ok, well... This is interesting. > > I just built a 4.20.13 (without the patch), and I did it from the Debian > kernel team repo, because then I just get all latest config options like > I would get them in Debian. > > I rebooted the HP Z820 with it (with Xen 4.11) and I don't see any > errors similar to the ones I pasted earlier. > > I haven't been running any domU on it yet (just installed it), but this > is not what I expected.
Well, commit c6d4381220a0087ce19dbf6984d92c451bd6b364 is part of a rather large series making the dma interface cleaner and using it more correctly where appropriate. Maybe your use case is covered by this series already. Juergen
