[Bug 109219] New: iommu_intel=on + i915 incompatibility in 4.17, 4.19.13 and drm-tip

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=109219

            Bug ID: 109219
           Summary: iommu_intel=on + i915 incompatibility in 4.17, 4.19.13
                    and drm-tip
           Product: DRI
           Version: DRI git
          Hardware: Other
               URL: https://lore.kernel.org/lkml/20181227114948.ev4b3jte3u
                    bsc5us at dcvr/T/
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: e+i915 at 80x24.org
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 142968
  --> https://bugs.freedesktop.org/attachment.cgi?id=142968&action=edit
dmesg output with without iommu_intel set

iommu_intel=on fails with i915 on x201 Thinkpad.

Thread on LKML:
https://lore.kernel.org/lkml/20181227114948.ev4b3jte3ubsc5us@dcvr/T/

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