Re: [RFC/PATCH 7/7] iommu-api: Add domain attribute to enable coherent HTW

2014-07-08 Thread Olav Haugan
will.dea...@arm.com; >>>> thierry.red...@gmail.com; vgan...@codeaurora.org >>>> Subject: [RFC/PATCH 7/7] iommu-api: Add domain attribute to enable >>>> coherent HTW >>>> >>>> Add a new iommu domain attribute that can be used to enable cac

Re: [RFC/PATCH 7/7] iommu-api: Add domain attribute to enable coherent HTW

2014-07-03 Thread Will Deacon
On Behalf Of Olav Haugan > >> Sent: Monday, June 30, 2014 10:22 PM > >> To: linux-arm-ker...@lists.infradead.org; iommu@lists.linux- > >> foundation.org > >> Cc: linux-arm-...@vger.kernel.org; will.dea...@arm.com; > >> thierry.red...@gmail.com; vgan...

Re: [RFC/PATCH 7/7] iommu-api: Add domain attribute to enable coherent HTW

2014-07-02 Thread Olav Haugan
rm-ker...@lists.infradead.org; iommu@lists.linux- >> foundation.org >> Cc: linux-arm-...@vger.kernel.org; will.dea...@arm.com; >> thierry.red...@gmail.com; vgan...@codeaurora.org >> Subject: [RFC/PATCH 7/7] iommu-api: Add domain attribute to enable >> coherent HTW >&

RE: [RFC/PATCH 7/7] iommu-api: Add domain attribute to enable coherent HTW

2014-07-01 Thread Varun Sethi
rg > Cc: linux-arm-...@vger.kernel.org; will.dea...@arm.com; > thierry.red...@gmail.com; vgan...@codeaurora.org > Subject: [RFC/PATCH 7/7] iommu-api: Add domain attribute to enable > coherent HTW > > Add a new iommu domain attribute that can be used to enable cache > coherent hard

[RFC/PATCH 7/7] iommu-api: Add domain attribute to enable coherent HTW

2014-06-30 Thread Olav Haugan
Add a new iommu domain attribute that can be used to enable cache coherent hardware table walks (HTW) by the SMMU. HTW might be supported by the SMMU HW but depending on the use case and the usage of the SMMU in the SoC it might not be always beneficial to always turn on coherent HTW for all domain