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Date:	Wed, 28 Oct 2009 10:06:55 -0600
From:	Alex Williamson <>
To:	David Woodhouse <>
Subject: Re: [PATCH 4/5] intel-iommu: Reinstate RMRRs if a device is
 removed from passthrough domain

On Wed, 2009-10-28 at 14:36 +0000, David Woodhouse wrote:
> On Tue, 2009-10-27 at 09:50 -0600, Alex Williamson wrote:
> > 
> > Yes, good point.  I'm not seeing any convenient ways to setup a new
> > domain for a device while it's still a member of the si_domain.  It
> > looks like I'd need to extract parts of the get_valid_domain_for_dev()
> > path and ignore any bits about using the already existing domain.
> That seems like a sane plan. That code wants cleaning up anyway, and
> factoring out the 'make new domain' part of get_valid_domain_for_dev()
> should be simple enough.

Ok, I'll work on something along those lines.  FWIW, even though I sent
these as a series, each one stands on it's own.  While I think
reinstating RMRRs is the right thing to do, I don't know of any devices
that break with the current model (the device I know of with the
interesting RMRR usage shouldn't be demoted from the si_domain).  So
please consider pushing patches 2, 3 & 5 upstream (particularly 2).


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