Messages in this thread | | | From | Kees Cook <> | Date | Mon, 5 Dec 2016 15:16:22 -0800 | Subject | Re: [PATCH] iommu/intel: disable DMAR for Q35 integrated gfx |
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On Mon, Dec 5, 2016 at 2:47 PM, David Woodhouse <dwmw2@infradead.org> wrote: > On Mon, 2016-12-05 at 14:18 -0800, Kees Cook wrote: >> Hm, I have no idea. :) What would I look for in the BIOS? > > For a start, what is the actual failure mode?
Based on initial testing (not that I've spent tons of time with it, since I need that machine running): at graphics init, entire system hangs. :P
>> I figured since g4 was busted, surely q35 was too, since it's even >> older... > > Oh no, they all have different failures. Intel never actually *tested* > their graphics hardware before shipping it, but IIRC it was only Q4x > where we concluded the hardware was just too broken to live.
Wheee!
-Kees
-- Kees Cook Nexus Security
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