Re: iommu/amd: flush IOTLB for specific domains only (v2)

2018-05-15 Thread Joseph Salisbury
On 05/15/2018 09:08 AM, Tom Lendacky wrote: > On 5/15/2018 7:34 AM, Nath, Arindam wrote: >> >>> -Original Message- >>> From: Joseph Salisbury [mailto:joseph.salisb...@canonical.com] >>> Sent: Tuesday, May 15, 2018 5:40 PM >>> To: Nath, Arin

Re: iommu/amd: flush IOTLB for specific domains only (v2)

2018-05-15 Thread Joseph Salisbury
es 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: Jose

iommu/amd: flush IOTLB for specific domains only (v2)

2018-05-14 Thread Joseph Salisbury
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 n

[REGRESSION] drm/amd/dc: Add dc display driver (v2)

2018-04-30 Thread Joseph Salisbury
Hi Harry, A kernel bug report was opened against Ubuntu [0].  After a kernel bisect, it was found the following commit introduced the bug: commit 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c Author: Harry Wentland Date:   Tue Sep 12 15:58:20 2017 -0400     drm/amd/dc: Add dc display driver (v2)