On Mon, Feb 22, 2016 at 10:29 AM, Jan Kiszka <jan.kis...@web.de> wrote: > On 2016-02-22 06:57, David Kiarie wrote: >> On Sun, Feb 21, 2016 at 11:20 PM, Jan Kiszka <jan.kis...@web.de> wrote: >>> On 2016-02-21 19:10, David Kiarie wrote: >>>> Hello there, >>>> >>>> Repost, AMD IOMMU patches version 6. >>>> >>>> Changes since version 5 >>>> -Fixed macro formating issues >>>> -changed occurences of IO MMU to IOMMU for consistency >>>> -Fixed capability registers duplication >>>> -Rebased to current master >>> >>> I suspect this still has some subtle bugs: I'm running the patches over >>> master with standard Linux distro as guest, full desktop, and I'm >>> getting sporadic segfaults of arbitrary programs. These disappear once I >>> disable the IOMMU or switch to the Intel version. >> >> Is this L1 guest or L2 guest ? - haven't got any such so far. > > It's L1 only. > >> >>> >>> How did you test so far? >> >> I mainly test by logging. I've tested L1 without any iommu-related >> command line parameters and with L1 with 'iommu=1 iommu=pt'. L2 guest; >> passed-through a device checked it's working correctly, that all. >> These guests barely have any load though. > > I quickly reproduced the issue by starting some "heavier" applications, > a browser or an office suite. Something is apparently always corrupted > then, data or code, thus the crashes.
Can't reproduce this issue with my ubuntu/debian VMs. Are you using any iommu-related command line parameters ? > > Jan > >
