On 12/03/2019 17:41, Hans van Kranenburg wrote: > On 3/12/19 5:04 PM, Juergen Gross wrote: >> 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. > > It seems so. That's good, of course, but it also means that I cannot be > of any use here any more to test the additional proposed change. ;]
I don't think the change is needed any longer. Christoph's series was meant to fix stuff like that and it did that very well. Juergen
