>>> On 07.02.17 at 16:44, <firemet...@users.sourceforge.net> wrote: > On Mon, Feb 6, 2017 at 8:40 PM, Jan Beulich <jbeul...@suse.com> wrote: >>>>> On 05.02.17 at 06:51, <firemet...@users.sourceforge.net> wrote: >>> I finally get some spare time to collect the debug info. >> >> As I continue to be puzzled, best I could come up with is an >> extension to the debug patch. Please use the attached one >> in place of the earlier one, ideally on top of >> https://lists.xenproject.org/archives/html/xen-devel/2017-02/msg00448.html >> to reduce the overall amount of output (and help readability). > > Please see attached...
Thanks, this confirms my suspicion that EPT tables get updated, but IOMMU ones don't. I'll have to go over the code yet another time to see if I can spot what's wrong, or whether I need to further extend the debugging patch. Are you using a PVH Dom0 here, btw? If so, is the problem connected to that? The fact that things work there may be attributable to the mappings already being there even before the identity mapping calls. I further note that there's an apparently legitimate IOMMU fault before the first guest gets started. This may indicate an issue with the Dom0 kernel. Jan _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel
