On 05/15/2018 04:03 AM, Nath, Arindam wrote: > Adding Tom. > > Hi Joe, > > My original patch was never accepted. Tom and Joerg worked on another patch series which was supposed to fix the issue in question in addition to do some code cleanups. I believe their patches are already in the mainline. If I remember correctly, one of the patches disabled PCI ATS for the graphics card which was causing the issue. > > Do you still see the issue with latest mainline kernel? > > BR, > Arindam > > -----Original Message----- > From: Joseph Salisbury [mailto:joseph.salisbury at canonical.com] > Sent: Tuesday, May 15, 2018 1:17 AM > To: Nath, Arindam <Arindam.Nath at amd.com> > Cc: iommu at lists.linux-foundation.org; Bridgman, John <John.Bridgman at amd.com>; joro at 8bytes.org; amd-gfx at lists.freedesktop.org; drake at endlessm.com; stein12c at gmail.com; Suthikulpanit, Suravee <Suravee.Suthikulpanit at amd.com>; Deucher, Alexander <Alexander.Deucher at amd.com>; Kuehling, Felix <Felix.Kuehling at amd.com>; linux at endlessm.com; michel at daenzer.net; 1747463 at bugs.launchpad.net > Subject: iommu/amd: flush IOTLB for specific domains only (v2) > > Hello Arindam, > > There is a bug report[0] that you created a patch[1] for a while back. However, the patch never landed in mainline. There is a bug reporter in Ubuntu[2] that is affected by this bug and is willing to test the patch. I attempted to build a test kernel with the patch, but it does not apply to currently mainline cleanly. Do you still think this patch may resolve this bug? If so, is there a version of your patch available that will apply to current mainline? > > Thanks, > > Joe > > [0] https://bugs.freedesktop.org/show_bug.cgi?id=101029 > [1] https://patchwork.freedesktop.org/patch/157327/ > [2] http://pad.lv/1747463 > Hi Arindam, Thanks for the feedback. Yes, the latest mainline kernel was tested, and it is reported the bug still happens in the Ubuntu kernel bug[0]. Is there any specific diagnostic info we can collect that might help? Thanks, Joe [0] http://pad.lv/1747463
