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