From: tchalamarla@caviumnetworks•com (Tirumalesh Chalamarla)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH V4] iommu/arm-smmu-v2: Workaround for ThunderX errata#27704
Date: Fri, 4 Mar 2016 13:35:18 -0800 [thread overview]
Message-ID: <56D9FF96.5030906@caviumnetworks.com> (raw)
In-Reply-To: <20160304205945.GG7886@arm.com>
On 03/04/2016 12:59 PM, Will Deacon wrote:
> On Fri, Mar 04, 2016 at 10:39:44AM -0800, Tirumalesh Chalamarla wrote:
>> Due to Errata#27704 CN88xx SMMUv2,supports only shared ASID and VMID
>> namespaces; specifically within a given node SMMU0 and SMMU1 share,
>> as does SMMU2 and SMMU3.
>>
>> This patch make sure ASID and VMID space is unique across cavium SMMUv2.
>>
>> changes from V3:
>> - Removed redundent variable.
>> - Used atomic_t for maintaining running total
>>
>> changes from V2:
>> - removed *_base from DT, and replaced with compatible string
>>
>> changes from V1:
>> - rebased on top of 16 bit VMID patch
>> - removed redundent options from DT
>> - insted of transform, DT now supplies starting ASID/VMID
>>
>> Signed-off-by: Tirumalesh Chalamarla <tchalamarla@caviumnetworks•com>
>> Signed-off-by: Akula Geethasowjanya <Geethasowjanya.Akula@caviumnetworks•com>
>> ---
>> Documentation/arm64/silicon-errata.txt | 1 +
>> .../devicetree/bindings/iommu/arm,smmu.txt | 1 +
>> drivers/iommu/arm-smmu.c | 42 ++++++++++++++++------
>> 3 files changed, 33 insertions(+), 11 deletions(-)
>
> Hmm, this doesn't seem to apply to my iommu/devel branch. Am I missing
> some dependency?
>
there should not, i will repost based on that branch.
> Will
>
next prev parent reply other threads:[~2016-03-04 21:35 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-04 18:39 [PATCH V4] iommu/arm-smmu-v2: Workaround for ThunderX errata#27704 Tirumalesh Chalamarla
2016-03-04 20:59 ` Will Deacon
2016-03-04 21:35 ` Tirumalesh Chalamarla [this message]
-- strict thread matches above, loose matches on Subject: below --
2016-03-04 21:56 Tirumalesh Chalamarla
2016-03-24 17:36 ` Chalamarla, Tirumalesh
2016-03-24 17:51 ` Will Deacon
2016-03-24 18:29 ` Chalamarla, Tirumalesh
2016-03-28 18:57 ` Radha Mohan
2016-03-28 19:25 ` Radha Mohan
2016-03-04 3:44 Tirumalesh Chalamarla
2016-03-04 16:02 ` Will Deacon
2016-03-04 18:09 ` Tirumalesh Chalamarla
2016-03-04 18:16 ` Tirumalesh Chalamarla
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