linux-kernel - Re: USB problem on x86_64: nommu_map

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Date:	Tue, 14 Oct 2008 15:43:41 +0200
From:	Nicolas Bareil <nico@...ir.org>
To:	Oliver Neukum <oliver@...kum.org>
Cc:	Nicolas Bareil <nico@...ir.org>, linux-kernel@...r.kernel.org,
	linux-usb@...r.kernel.org
Subject: Re: USB problem on x86_64: nommu_map_single() issue?

On Tue, Oct 14, 2008 at 01:00:28PM +0200, Oliver Neukum wrote:
> > Yes this is a regression: USB works in 2.6.26.x with (almost) the same configuration.
> 
> This a an IOMMU problem, not really a USB problem. Can you bisect the problem?

Ok, after 24 reboots, I have the following commit:

commit 6f21d806f698a5c437dcae1f03e8dd73e3f5aab1
Merge: e59e14b... 9f72632...
Author: Linus Torvalds <torvalds@...ux-foundation.org>
Date:   Sun Sep 21 12:40:56 2008 -0700

    Merge branch 'kvm-updates/2.6.27' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm

    * 'kvm-updates/2.6.27' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm:
      KVM: ia64: 'struct fdesc' build fix

Do you think I'm good to bisect that tree or do you have an idea?

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