https://github.com/torvalds/linux
Revision f295c8cfec833c2707ff1512da10d65386dde7af authored by Dave Airlie on 01 February 2021, 00:56:32 UTC, committed by Dave Airlie on 03 February 2021, 20:56:06 UTC
Since I wrote the below patch if you run a debug kernel you can a
dma debug warning like:
nouveau 0000:1f:00.0: DMA-API: device driver tries to sync DMA memory it has not allocated [device address=0x000000016e012000] [size=4096 bytes]
The old nouveau code wasn't consolidate the pages like the ttm code,
but the dma-debug expects the sync code to give it the same base/range
pairs as the allocator.
Fix the nouveau sync code to consolidate pages before calling the
sync code.
Fixes: bd549d35b4be0 ("nouveau: use ttm populate mapping functions. (v2)")
Reported-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/417588/
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History 
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Tip revision: f295c8cfec833c2707ff1512da10d65386dde7af authored by Dave Airlie on 01 February 2021, 00:56:32 UTC
drm/nouveau: fix dma syncing warning with debugging on.
drm/nouveau: fix dma syncing warning with debugging on.
Tip revision: f295c8c
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| init | ||
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| .clang-format | -rw-r--r-- | 16.3 KB |
| .cocciconfig | -rw-r--r-- | 59 bytes |
| .get_maintainer.ignore | -rw-r--r-- | 71 bytes |
| .gitattributes | -rw-r--r-- | 62 bytes |
| .gitignore | -rw-r--r-- | 1.8 KB |
| .mailmap | -rw-r--r-- | 18.0 KB |
| COPYING | -rw-r--r-- | 496 bytes |
| CREDITS | -rw-r--r-- | 98.4 KB |
| Kbuild | -rw-r--r-- | 1.3 KB |
| Kconfig | -rw-r--r-- | 555 bytes |
| MAINTAINERS | -rw-r--r-- | 572.2 KB |
| Makefile | -rw-r--r-- | 62.9 KB |
| README | -rw-r--r-- | 727 bytes |
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