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| author |   Xuan Zhuo <xuanzhuo@linux.alibaba.com> | 2023-08-10 20:30:51 +0800 |
|---|---|---|
| committer |   Michael S. Tsirkin <mst@redhat.com> | 2023-09-03 18:10:23 -0400 |
| commit | b319940f83c21bb4c1fabffe68a862be879a6193 (patch) | |
| tree | 5d69c2538deabac5419fb3eef41fc0e1d14346e2 /scripts/generate_rust_analyzer.py | |
| parent | virtio_ring: introduce virtqueue_dma_dev() (diff) | |
| download | linux-rng-b319940f83c21bb4c1fabffe68a862be879a6193.tar.xz linux-rng-b319940f83c21bb4c1fabffe68a862be879a6193.zip | |
virtio_ring: skip unmap for premapped
Now we add a case where we skip dma unmap, the vq->premapped is true.
We can't just rely on use_dma_api to determine whether to skip the dma
operation. For convenience, I introduced the "do_unmap". By default, it
is the same as use_dma_api. If the driver is configured with premapped,
then do_unmap is false.
So as long as do_unmap is false, for addr of desc, we should skip dma
unmap operation.
Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Message-Id: <20230810123057.43407-7-xuanzhuo@linux.alibaba.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'scripts/generate_rust_analyzer.py')
0 files changed, 0 insertions, 0 deletions