linux-kernel - Re: DMAR faults from unrelated device when vfio is used

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Message-ID: <20130205214146.4be295ad@spider.haslach.nod.at>
Date:	Tue, 5 Feb 2013 21:41:46 +0100
From:	Richard Weinberger <richard@...ma-star.at>
To:	Alex Williamson <alex.williamson@...hat.com>
Cc:	David Gstir <david@...ma-star.at>, kvm@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: DMAR faults from unrelated device when vfio is used

Am Tue, 05 Feb 2013 13:36:53 -0700
schrieb Alex Williamson <alex.williamson@...hat.com>:
> > Ugh, the infamous and useless error 10.  It could be anything.
> > I've got a system with onboard usb3, let me see what windows does
> > with it here first.  Thanks,
> 
> Well, I've got an Etron USB3 HBA and (un)fortunately it works just
> fine with a Win7 guest.  There's really nothing special about USB
> controllers from a PCI device assignment perspective.  Have you tried
> the latest upstream qemu bits?  Thanks,

We tried also qemu v1.4.0-rc0 (git as of today) without success.
As next step we'll test Linux as guest, maybe it is more chatty than
Windows regarding the issue. :-)

Thanks,
//richard
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