[Bug 89360] [bdw-u iommu] DMAR error -> GPU hang

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=89360

--- Comment #68 from Ernest Hurtado <mqajjhfn at 10mail.org> ---
Patching kernel with workaround posted in
https://bugs.freedesktop.org/show_bug.cgi?id=89360#c58 fixes this issue for
Intel HD Graphics 5500 (Broadwell GT2) and linux 4.13.3.

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