linux-kernel - Re: [PATCH v4 0/7] Convert the intel iommu driver to the dma-iommu api

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Message-ID: <e999e371-6d36-ffea-542f-a5f4b230b0ed@linux.intel.com>
Date:   Mon, 28 Sep 2020 10:44:40 +0100
From:   Tvrtko Ursulin <tvrtko.ursulin@...ux.intel.com>
To:     Lu Baolu <baolu.lu@...ux.intel.com>,
        Joerg Roedel <joro@...tes.org>, Tom Murphy <murphyt7@....ie>,
        David Woodhouse <dwmw2@...radead.org>,
        Christoph Hellwig <hch@...radead.org>
Cc:     Ashok Raj <ashok.raj@...el.com>, Intel-gfx@...ts.freedesktop.org,
        iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 0/7] Convert the intel iommu driver to the dma-iommu
 api


On 27/09/2020 07:34, Lu Baolu wrote:
> Hi,
> 
> The previous post of this series could be found here.
> 
> https://lore.kernel.org/linux-iommu/20200912032200.11489-1-baolu.lu@linux.intel.com/
> 
> This version introduce a new patch [4/7] to fix an issue reported here.
> 
> https://lore.kernel.org/linux-iommu/51a1baec-48d1-c0ac-181b-1fba92aa428d@linux.intel.com/
> 
> There aren't any other changes.
> 
> Please help to test and review.
> 
> Best regards,
> baolu
> 
> Lu Baolu (3):
>    iommu: Add quirk for Intel graphic devices in map_sg

Since I do have patches to fix i915 to handle this, do we want to 
co-ordinate the two and avoid having to add this quirk and then later 
remove it? Or you want to go the staged approach?

Regards,

Tvrtko

>    iommu/vt-d: Update domain geometry in iommu_ops.at(de)tach_dev
>    iommu/vt-d: Cleanup after converting to dma-iommu ops
> 
> Tom Murphy (4):
>    iommu: Handle freelists when using deferred flushing in iommu drivers
>    iommu: Add iommu_dma_free_cpu_cached_iovas()
>    iommu: Allow the dma-iommu api to use bounce buffers
>    iommu/vt-d: Convert intel iommu driver to the iommu ops
> 
>   .../admin-guide/kernel-parameters.txt         |   5 -
>   drivers/iommu/dma-iommu.c                     | 228 ++++-
>   drivers/iommu/intel/Kconfig                   |   1 +
>   drivers/iommu/intel/iommu.c                   | 901 +++---------------
>   include/linux/dma-iommu.h                     |   8 +
>   include/linux/iommu.h                         |   1 +
>   6 files changed, 336 insertions(+), 808 deletions(-)
>