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From: Julien Grall <julien.grall@linaro.org>
To: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Cc: ian.campbell@citrix.com, tim@xen.org,
	Andreas Herrmann <herrmann.der.user@googlemail.com>,
	stefano.stabellini@citrix.com,
	Andreas Herrmann <andreas.herrmann@calxeda.com>,
	xen-devel@lists.xenproject.org
Subject: Re: [PATCH v2 10/12] xen/iommu: smmu: Check for duplicate stream IDs when registering master devices
Date: Tue, 27 Jan 2015 16:52:51 +0000	[thread overview]
Message-ID: <54C7C263.7090806@linaro.org> (raw)
In-Reply-To: <alpine.DEB.2.02.1501271630020.9702@kaball.uk.xensource.com>

On 27/01/15 16:30, Stefano Stabellini wrote:
> On Fri, 16 Jan 2015, Julien Grall wrote:
>> From: Andreas Herrmann <andreas.herrmann@calxeda.com>
>>
>> If DT information lists one stream ID twice for the master devices of
>> an SMMU this can cause a multi match when stream ID matching is used.
>> For stream ID indexing this might trigger an overwrite of an S2CR that
>> is already in use.
>>
>> So better check for duplicates when DT information is parsed.
>>
>> Taken from the linux ML:
>> http://lists.infradead.org/pipermail/linux-arm-kernel/2014-January/226099.html
>>
>> Cc: Andreas Herrmann <herrmann.der.user@googlemail.com>
>> Signed-off-by: Andreas Herrmann <andreas.herrmann@calxeda.com>
>> Signed-off-by: Julien Grall <julien.grall@linaro.org>
> 
> Why didn't you just take a more recent version of the Linux smmu driver?

The SMMU driver very is recent (see commit in the previous patch)...
Just this patch has never reached upstream.

Regards,

-- 
Julien Grall

  reply	other threads:[~2015-01-27 16:53 UTC|newest]

Thread overview: 51+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-01-16 14:23 [PATCH v2 00/12] xen/arm: Resync the SMMU driver with the Linux one Julien Grall
2015-01-16 14:23 ` [PATCH v2 01/12] xen/arm: gic-v2: Change the device name in DT_DEVICE_START Julien Grall
2015-01-27 15:52   ` Stefano Stabellini
2015-01-16 14:23 ` [PATCH v2 02/12] xen/arm: vgic: Drop unecessary include asm/device.h Julien Grall
2015-01-27 15:53   ` Stefano Stabellini
2015-01-16 14:23 ` [PATCH v2 03/12] xen/dt: Extend dt_device_match to possibly store data Julien Grall
2015-01-27 15:57   ` Stefano Stabellini
2015-01-27 16:07     ` Julien Grall
2015-01-27 16:10       ` Stefano Stabellini
2015-01-27 16:35         ` Julien Grall
2015-01-27 16:46           ` Stefano Stabellini
2015-01-27 16:49             ` Julien Grall
2015-01-16 14:23 ` [PATCH v2 04/12] xen/arm: device: Rename device_type into device_match Julien Grall
2015-01-27 16:05   ` Stefano Stabellini
2015-01-27 16:09     ` Julien Grall
2015-01-27 16:13       ` Stefano Stabellini
2015-01-27 22:26         ` Julien Grall
2015-01-16 14:24 ` [PATCH v2 05/12] xen/iommu: arm: Remove temporary the SMMU driver Julien Grall
2015-01-27 16:05   ` Stefano Stabellini
2015-01-16 14:24 ` [PATCH v2 06/12] xen/arm: Introduce a generic way to describe device Julien Grall
2015-01-16 14:59   ` Jan Beulich
2015-01-16 15:01     ` Julien Grall
2015-01-27 16:13   ` Stefano Stabellini
2015-01-16 14:24 ` [PATCH v2 07/12] xen/iommu: Consolidate device assignment ops into a single set Julien Grall
2015-01-16 15:03   ` Jan Beulich
2015-01-27 16:16   ` Stefano Stabellini
2015-01-16 14:24 ` [PATCH v2 08/12] xen/arm: Describe device supported by a driver with dt_match_node Julien Grall
2015-01-27 16:28   ` Stefano Stabellini
2015-01-16 14:24 ` [PATCH v2 09/12] xen/iommu: arm: Import the SMMU driver from Linux Julien Grall
2015-01-27 16:28   ` Stefano Stabellini
2015-01-27 16:51     ` Julien Grall
2015-01-16 14:24 ` [PATCH v2 10/12] xen/iommu: smmu: Check for duplicate stream IDs when registering master devices Julien Grall
2015-01-27 16:30   ` Stefano Stabellini
2015-01-27 16:52     ` Julien Grall [this message]
2015-01-27 17:02       ` Stefano Stabellini
2015-01-27 17:33         ` Julien Grall
2015-01-27 17:36           ` Stefano Stabellini
2015-01-27 17:44           ` Ian Campbell
2015-01-27 17:51             ` Julien Grall
2015-01-27 20:54               ` Andreas Herrmann
2015-01-28 10:38               ` Ian Campbell
2015-01-28 11:39                 ` Julien Grall
2015-01-16 14:24 ` [PATCH v2 11/12] xen/iommu: smmu: Introduce automatic stream-id-masking Julien Grall
2015-01-16 14:24 ` [PATCH v2 12/12] xen/iommu: smmu: Add Xen specific code to be able to use the driver Julien Grall
2015-01-27 16:46   ` Stefano Stabellini
2015-01-27 17:05     ` Julien Grall
2015-01-27 17:34       ` Stefano Stabellini
2015-01-28 10:31         ` Ian Campbell
2015-01-28 11:49           ` Julien Grall
2015-01-28 12:13             ` Ian Campbell
2015-01-28 12:15             ` Stefano Stabellini

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