From: Christoph Hellwig <hch@lst.de>
To: thellstrom@vmware.com
Cc: iommu@lists.linux-foundation.org,
linux-graphics-maintainer@vmware.com,
linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org
Subject: fix DMA ops layering violations in vmwgfx
Date: Sat, 5 Jan 2019 09:01:04 +0100 [thread overview]
Message-ID: <20190105080108.14837-1-hch@lst.de> (raw)
Hi Thomas,
vmwgfx has been doing some odd checks based on DMA ops which rely
on deep DMA mapping layer internals, and I think the changes in
Linux 4.21 finally broke most of these implicit assumptions.
The real fix is in patch 3, but I think the others are important
to make it clear what is actually going on.
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next reply other threads:[~2019-01-05 8:01 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-05 8:01 Christoph Hellwig [this message]
2019-01-05 8:01 ` [PATCH 1/4] drm/vmwgfx: remove CONFIG_X86 ifdefs Christoph Hellwig
2019-01-05 8:01 ` [PATCH 2/4] drm/vmwgfx: remove CONFIG_INTEL_IOMMU ifdefs Christoph Hellwig
2019-01-08 10:03 ` Thomas Hellstrom
[not found] ` <20190105080108.14837-3-hch-jcswGhMUV9g@public.gmane.org>
2019-01-08 10:55 ` Thomas Hellstrom
2019-01-05 8:01 ` [PATCH 3/4] drm/vmwgfx: fix the check when to use dma_alloc_coherent Christoph Hellwig
2019-01-05 8:01 ` [PATCH 4/4] drm/vmwgfx: unwind spaghetti code in vmw_dma_select_mode Christoph Hellwig
[not found] ` <20190105080108.14837-5-hch-jcswGhMUV9g@public.gmane.org>
2019-01-08 10:56 ` Thomas Hellstrom
2019-01-08 9:51 ` fix DMA ops layering violations in vmwgfx Thomas Hellstrom
[not found] ` <99091bb861e21d5bb4182f08dedbc494c637cc0f.camel-pghWNbHTmq7QT0dZR+AlfA@public.gmane.org>
2019-01-08 13:12 ` hch-jcswGhMUV9g
[not found] ` <20190108131227.GB6003-jcswGhMUV9g@public.gmane.org>
2019-01-08 18:25 ` Thomas Hellstrom
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