From: David Woodhouse <dwmw2@infradead.org>
To: Fenghua Yu <fenghua.yu@intel.com>
Cc: Greg KH <gregkh@suse.de>,
Andrew Morton <akpm@linux-foundation.org>,
torvalds@linux-foundation.org, jbarnes@virtuousgeek.org,
Yinghai Lu <yhlu.kernel@gmail.com>,
stable@kernel.org, iommu@lists.linux-foundation.org,
linux-kernel@vger.kernel.org
Subject: Re: [stable][PATCH] PCIe hot-plug for Intel IOMMU
Date: Thu, 12 Nov 2009 02:37:15 +0000 [thread overview]
Message-ID: <1257993435.3907.86.camel@macbook.infradead.org> (raw)
In-Reply-To: <20091111152306.GA29256@linux-os.sc.intel.com>
On Wed, 2009-11-11 at 07:23 -0800, Fenghua Yu wrote:
> To support PCIe hot plug in IOMMU, we register a notifier to respond to device
> change action.
>
> When the notifier gets BUS_NOTIFY_UNBOUND_DRIVER, it removes the device from its
> DMAR domain.
>
> A hot added device will be added into an IOMMU domain when it first does IOMMU
> op. So there is no need to add more code for hot add.
>
> Without the patch, after a hot-remove, a hot-added device on the same slot will
> not work.
>
> Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
>
> ---
>
> The patch missed 2.6.32 release. Could it be in 2.6.32 stable?
Not strictly a regression, but it would make a lot of sense.
Fenghua, please could you test what's in
git://git.infradead.org/~dwmw2/iommu-2.6.32.git on IA64 before I send it
to Linus? There are a couple of other fixes for HP brain damage there.
--
dwmw2
next prev parent reply other threads:[~2009-11-12 2:37 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-11-04 22:59 [PATCH] intel-iommu: Obey coherent_dma_mask for alloc_coherent on passthrough Alex Williamson
2009-11-06 2:41 ` FUJITA Tomonori
2009-11-06 3:19 ` Alex Williamson
2009-11-06 3:34 ` FUJITA Tomonori
2009-11-06 4:09 ` Alex Williamson
2009-11-09 23:02 ` David Woodhouse
2009-11-09 23:32 ` Alex Williamson
2009-11-10 0:19 ` David Woodhouse
2009-11-11 15:23 ` [stable][PATCH] PCIe hot-plug for Intel IOMMU Fenghua Yu
2009-11-11 21:27 ` Yinghai Lu
2009-11-28 6:17 ` David Woodhouse
2009-11-12 2:37 ` David Woodhouse [this message]
2009-11-12 23:32 ` Yu, Fenghua
2009-11-10 0:46 ` [PATCH] intel-iommu: Obey coherent_dma_mask for alloc_coherent on passthrough David Woodhouse
2009-11-10 1:01 ` David Woodhouse
2009-11-10 1:28 ` Alex Williamson
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