Messages in this thread | | | From | Kees Cook <> | Date | Mon, 5 Dec 2016 14:18:29 -0800 | Subject | Re: [PATCH] iommu/intel: disable DMAR for Q35 integrated gfx |
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On Mon, Dec 5, 2016 at 2:07 PM, David Woodhouse <dwmw2@infradead.org> wrote: > On Mon, 2016-12-05 at 13:58 -0800, Kees Cook wrote: >> This blacklists the Q35 integrated graphics so IOMMU can be otherwise >> enabled. Without this, a Q35 system can only enable IOMMU when booting >> with "intel_iommu=on,igfx_off" but not "intel_iommu=on". > > Hm, is this definitely the same bug? Or is it something different, and > perhaps a BIOS issue? There are many of those...
Hm, I have no idea. :) What would I look for in the BIOS?
I figured since g4 was busted, surely q35 was too, since it's even older...
-Kees
-- Kees Cook Nexus Security
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