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From:   Christoph Hellwig <hch@lst.de>
To:     Mauro Carvalho Chehab <mchehab@kernel.org>,
        Marek Szyprowski <m.szyprowski@samsung.com>,
        Tomasz Figa <tfiga@chromium.org>,
        Ricardo Ribalda <ribalda@chromium.org>,
        Sergey Senozhatsky <senozhatsky@google.com>,
        iommu@lists.linux-foundation.org
Cc:     Robin Murphy <robin.murphy@arm.com>, linux-doc@vger.kernel.org,
        linux-kernel@vger.kernel.org, linux-media@vger.kernel.org
Subject: add a new dma_alloc_noncontiguous API v2
Date:   Tue,  2 Feb 2021 10:51:03 +0100
Message-Id: <20210202095110.1215346-1-hch@lst.de>
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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