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From: "Christian König" <ckoenig.leichtzumerken@gmail.com>
To: David1.Zhou@amd.com, hch@infradead.org, jgg@ziepe.ca,
	daniel@ffwll.ch, dri-devel@lists.freedesktop.org,
	linaro-mm-sig@lists.linaro.org, linux-media@vger.kernel.org,
	intel-gfx@lists.freedesktop.org
Subject: [Intel-gfx] P2P for DMA-buf
Date: Wed, 11 Mar 2020 14:51:52 +0100	[thread overview]
Message-ID: <20200311135158.3310-1-christian.koenig@amd.com> (raw)

This is the third and final part of my series to start supporting P2P with DMA-buf.

The implementation is straight forward, apart from a helper to aid constructing scatterlists without having struct pages we only add a new flag indicating that an DMA-buf importer can handle peer2peer.

The exporter can then check if P2P is general possible using the pci_p2pdma_distance_many() function and if necessary can also clear the flag.

The rest is an example how to implementing the necessary functionality into the amdgpu driver to setup scatterlists pointing to device memory.

Please review and comment,
Christian.


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             reply	other threads:[~2020-03-11 15:04 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-11 13:51 Christian König [this message]
2020-03-11 13:51 ` [Intel-gfx] [PATCH 1/6] lib/scatterlist: add sg_set_dma_addr() function Christian König
2020-03-11 15:28   ` Christoph Hellwig
2020-03-12 10:14     ` Christian König
2020-03-12 10:19       ` Christoph Hellwig
2020-03-12 10:31         ` Christian König
2020-03-12 10:47           ` Christoph Hellwig
2020-03-12 11:02             ` Christian König
     [not found]             ` <20200312141928.GK31668@ziepe.ca>
2020-03-12 15:39               ` Christian König
2020-03-12 16:13               ` Logan Gunthorpe
2020-03-13 11:21               ` Christoph Hellwig
2020-03-13 13:33                 ` Christian König
     [not found]                 ` <20200313121742.GZ31668@ziepe.ca>
2020-03-16  8:56                   ` Christoph Hellwig
2020-03-16  9:41                     ` Christian König
2020-03-16  9:52                       ` Christoph Hellwig
2020-03-11 13:51 ` [Intel-gfx] [PATCH 2/6] dma-buf: add peer2peer flag Christian König
2020-03-11 13:51 ` [Intel-gfx] [PATCH 3/6] drm/amdgpu: note that we can handle peer2peer DMA-buf Christian König
2020-03-11 13:51 ` [Intel-gfx] [PATCH 4/6] drm/amdgpu: add checks if DMA-buf P2P is supported Christian König
     [not found]   ` <20200311140415.GB31668@ziepe.ca>
2020-03-11 14:33     ` Christian König
     [not found]       ` <20200311143835.GD31668@ziepe.ca>
2020-03-11 14:43         ` Christian König
2020-03-11 13:51 ` [Intel-gfx] [PATCH 5/6] drm/amdgpu: add support for exporting VRAM using DMA-buf v2 Christian König
2020-03-11 15:08   ` Alex Deucher
2020-03-11 13:51 ` [Intel-gfx] [PATCH 6/6] drm/amdgpu: improve amdgpu_gem_info debugfs file Christian König
2020-03-11 18:09 ` [Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for series starting with [1/6] lib/scatterlist: add sg_set_dma_addr() function Patchwork
2020-03-11 18:34 ` [Intel-gfx] ✗ Fi.CI.BAT: failure " Patchwork

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