linux-kernel - Re: Bisected regression: hang on i915 between 3.1.0-rc9 and 3.1.0

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Date:	Wed, 23 Nov 2011 10:54:10 +0200 (EET)
From:	Meelis Roos <mroos@...ux.ee>
To:	Keith Packard <keithp@...thp.com>
cc:	David Woodhouse <dwmw2@...radead.org>,
	dri-devel@...ts.freedesktop.org,
	Linux Kernel list <linux-kernel@...r.kernel.org>,
	Daniel Vetter <daniel@...ll.ch>
Subject: Re: Bisected regression: hang on i915 between 3.1.0-rc9 and 3.1.0

> > Yes, VT-x and VT-d are both enabled from BIOS setup.
> 
> Any reason for that? We've found all kinds of problems with DMAR enabled
> on these machines that is only resolved by completely turning it
> off. You might try with intel_iommu=off and make sure that's stable.

Well, there is reason for VT-x but actually none for VT-d because I am 
not giving out any PCI devices to virtual machines. Will also test 
witout it.

-- 
Meelis Roos (mroos@...ux.ee)
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