linux-kernel - Re: [PATCH] iommu/intel: disable DMAR for g4x integrated gfx

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Mon, 21 Jan 2013 13:03:48 -0600
From:	David Woodhouse <dwmw2@...radead.org>
To:	Daniel Vetter <daniel.vetter@...ll.ch>,
	"Sankaran, Rajesh" <rajesh.sankaran@...el.com>
Cc:	Intel Graphics Development <intel-gfx@...ts.freedesktop.org>,
	DRI Development <dri-devel@...ts.freedesktop.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Adam Jackson <ajax@...hat.com>, stable@...r.kernel.org
Subject: Re: [PATCH] iommu/intel: disable DMAR for g4x integrated gfx

On Sun, 2013-01-20 at 23:50 +0100, Daniel Vetter wrote:
> DMAR support on g4x/gm45 integrated gpus seems to be totally busted.
> So don't bother, but instead disable it by default to allow distros to
> unconditionally enable DMAR support.

Acked-By: David Woodhouse <David.Woodhouse@...el.com>

It *really* winds me up that we never bother to test this hardware
before we ship it.

But I'm even *more* disappointed that we can't even diagnose it and
publish coherent errata *after* the fact. I'd really like to see each
quirk which disables features referencing a specific published erratum.
We really ought to be able to manage at least *that* much.

Rajesh?

-- 
dwmw2


Download attachment "smime.p7s" of type "application/x-pkcs7-signature" (6171 bytes)