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From:   Ricardo Ribalda <ribalda@chromium.org>
Date:   Thu, 11 Mar 2021 17:57:56 +0100
Message-ID: <CANiDSCuFkTYMGeL8WK_3VkYy4a1h3hY4NKWTtz=bho844Fa2zw@mail.gmail.com>
Subject: Re: add a new dma_alloc_noncontiguous API v3
To:     Christoph Hellwig <hch@lst.de>
Cc:     Mauro Carvalho Chehab <mchehab@kernel.org>,
        Marek Szyprowski <m.szyprowski@samsung.com>,
        Tomasz Figa <tfiga@chromium.org>,
        Sergey Senozhatsky <senozhatsky@google.com>,
        Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
        "list@263.net:IOMMU DRIVERS <iommu@lists.linux-foundation.org>, Joerg
        Roedel <joro@8bytes.org>," <iommu@lists.linux-foundation.org>,
        Linux Media Mailing List <linux-media@vger.kernel.org>,
        Robin Murphy <robin.murphy@arm.com>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Linux Doc Mailing List <linux-doc@vger.kernel.org>
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Hi Christoph

I tried to run it in an arm device and it worked fine.


On Thu, Mar 11, 2021 at 5:52 PM Christoph Hellwig <hch@lst.de> wrote:
>
> Any comments?  Especially on the uvcvideo conversion?
>
> On Mon, Mar 01, 2021 at 09:52:30AM +0100, Christoph Hellwig wrote:
> > Hi all,
> >
> > this series adds the new noncontiguous DMA allocation API requested by
> > various media driver maintainers.
> >
> > Changes since v2:
> >  - rebased to Linux 5.12-rc1
> >  - dropped one already merged patch
> >  - pass an attrs argument to dma_alloc_noncontigous
> >  - clarify the dma_vmap_noncontiguous documentation a bit
> >  - fix double assignments in uvcvideo
> >
> > Changes since v1:
> >  - document that flush_kernel_vmap_range and invalidate_kernel_vmap_range
> >    must be called once an allocation is mapped into KVA
> >  - add dma-debug support
> >  - remove the separate dma_handle argument, and instead create fully formed
> >    DMA mapped scatterlists
> >  - use a directional allocation in uvcvideo
> >  - call invalidate_kernel_vmap_range from uvcvideo
> > _______________________________________________
> > iommu mailing list
> > iommu@lists.linux-foundation.org
> > https://lists.linuxfoundation.org/mailman/listinfo/iommu
> ---end quoted text---


-- 
Ricardo Ribalda