----- jbeul...@suse.com wrote: > >>> On 22.01.15 at 16:11, <elena.ufimts...@oracle.com> wrote: > > ----- jbeul...@suse.com wrote: > >> A fundamental question is what business devices have to DMA their > >> own (or other devices') MMIO space. I could remotely see a need > >> for this for e.g. frame buffers, but I have difficulty > understanding > >> this for USB devices. Please at the very least provide details on > the > >> MMIO regions that those devices have, and which of them you > >> observed IOMMU faults on. > > > > The IOMMU Page fault addresses are 0xd5d45 and 0xd5d46 in case of > > ThinkCentre machine. > > If you would like to see any other details I am happy to send them > as well. > > Yes, the two numbers alone don't tell me anything - I can't even > judge whether they're MFNs, GFNs, or host/guest physical > addresses that way. I also specifically asked for providing the > BAR values of the USB controller in question, to be able to match > up the numbers. Logs and/or lspci output will be most useful for > this purpose. > > Jan
I will send all what I have. Elena _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
