linux-kernel - Re: [PATCH] pci: Add quirk for still enabled interrupts on Intel Sandy Bridge GPUs

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]

Message-ID: <20120210114552.5ff66007@jbarnes-desktop>
Date:	Fri, 10 Feb 2012 11:45:52 -0800
From:	Jesse Barnes <jbarnes@...tuousgeek.org>
To:	Thomas Jarosch <thomas.jarosch@...ra2net.com>
Cc:	linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
	Charlie Suffin <charlie.suffin@...atus.com>, stable@...nel.org
Subject: Re: [PATCH] pci: Add quirk for still enabled interrupts on Intel
 Sandy Bridge GPUs

On Wed, 07 Dec 2011 22:08:11 +0100
Thomas Jarosch <thomas.jarosch@...ra2net.com> wrote:

> Some BIOS implementations leave the Intel GPU interrupts enabled,
> even though no one is handling them (f.e. i915 driver is never loaded).
> Additionally the interrupt destination is not set up properly
> and the interrupt ends up -somewhere-.
> 
> These spurious interrupts are "sticky" and the kernel disables
> the (shared) interrupt line after 100.000+ generated interrupts.
> 
> Fix it by disabling the still enabled interrupts.
> This resolves crashes often seen on monitor unplug.

Applied to my -next branch finally (sorry I missed your last reply),
thanks Thomas.

-- 
Jesse Barnes, Intel Open Source Technology Center

Download attachment "signature.asc" of type "application/pgp-signature" (837 bytes)