From: Alex Williamson <alex.williamson@hp.com>
To: David Woodhouse <dwmw2@infradead.org>
Cc: iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org,
linux-pci@vger.kernel.org
Subject: Re: [PATCH 4/5] intel-iommu: Reinstate RMRRs if a device is removed from passthrough domain
Date: Wed, 28 Oct 2009 10:06:55 -0600 [thread overview]
Message-ID: <1256746015.5937.128.camel@bling> (raw)
In-Reply-To: <1256740619.9814.141.camel@macbook.infradead.org>
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).
Thanks,
Alex
next prev parent reply other threads:[~2009-10-28 16:06 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-26 23:24 [PATCH 0/5] intel-iommu fixes Alex Williamson
2009-10-26 23:24 ` [PATCH 1/5] dma: create dma_generic_alloc/free_coherent() Alex Williamson
2009-10-27 0:57 ` Paul Mundt
2009-10-27 2:26 ` Alex Williamson
2009-10-27 1:47 ` FUJITA Tomonori
2009-10-26 23:25 ` [PATCH 2/5] intel-iommu: Use dma_generic_alloc_coherent() for passthrough mappings Alex Williamson
2009-10-27 3:24 ` [PATCH v2 2/5] intel-iommu: Obey coherent_dma_mask for alloc_coherent on passthrough Alex Williamson
2009-10-26 23:25 ` [PATCH 3/5] intel-iommu: Use max_pfn to determine whether a device can passthrough Alex Williamson
2009-10-26 23:25 ` [PATCH 4/5] intel-iommu: Reinstate RMRRs if a device is removed from passthrough domain Alex Williamson
2009-10-27 8:15 ` David Woodhouse
2009-10-27 15:50 ` Alex Williamson
2009-10-28 14:36 ` David Woodhouse
2009-10-28 16:06 ` Alex Williamson [this message]
2009-10-28 20:35 ` Alex Williamson
2009-10-26 23:25 ` [PATCH 5/5] intel-iommu: Quiet unnecessary output Alex Williamson
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