linux-kernel - Re: add a new dma_alloc_noncontiguous API v2

Open Source and information security mailing list archives

Date:   Mon, 8 Feb 2021 20:33:50 +0900
From:   Tomasz Figa <tfiga@...omium.org>
To:     Christoph Hellwig <hch@....de>
Cc:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Ricardo Ribalda <ribalda@...omium.org>,
        Sergey Senozhatsky <senozhatsky@...gle.com>,
        "open list:IOMMU DRIVERS" <iommu@...ts.linux-foundation.org>,
        Linux Media Mailing List <linux-media@...r.kernel.org>,
        Robin Murphy <robin.murphy@....com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Doc Mailing List <linux-doc@...r.kernel.org>
Subject: Re: add a new dma_alloc_noncontiguous API v2

Hi Christoph,

On Mon, Feb 8, 2021 at 3:49 AM Christoph Hellwig <hch@....de> wrote:
>
> Any comments?
>

Sorry for the delay. The whole series looks very good to me. Thanks a lot.

Reviewed-by: Tomasz Figa <tfiga@...omium.org>

Best regards,
Tomasz

> On Tue, Feb 02, 2021 at 10:51:03AM +0100, Christoph Hellwig wrote:
> > Hi all,
> >
> > this series adds the new noncontiguous DMA allocation API requested by
> > various media driver maintainers.
> >
> > 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@...ts.linux-foundation.org
> > https://lists.linuxfoundation.org/mailman/listinfo/iommu
> ---end quoted text---

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