diff options
| author | Maxime Coquelin <[email protected]> | 2024-02-19 18:06:06 +0100 |
|---|---|---|
| committer | Michael S. Tsirkin <[email protected]> | 2024-03-19 02:45:49 -0400 |
| commit | d7b4e3287ca3a7baf66efd9158498e551a9550da (patch) | |
| tree | 8175cee3b84db3c9bafb4ba10b9626945475359b /net/lapb/lapb_out.c | |
| parent | 749a4016839270163efc36ecddddd01de491a16b (diff) | |
vduse: implement DMA sync callbacks
Since commit 295525e29a5b ("virtio_net: merge dma
operations when filling mergeable buffers"), VDUSE device
require support for DMA's .sync_single_for_cpu() operation
as the memory is non-coherent between the device and CPU
because of the use of a bounce buffer.
This patch implements both .sync_single_for_cpu() and
.sync_single_for_device() callbacks, and also skip bounce
buffer copies during DMA map and unmap operations if the
DMA_ATTR_SKIP_CPU_SYNC attribute is set to avoid extra
copies of the same buffer.
Signed-off-by: Maxime Coquelin <[email protected]>
Message-Id: <[email protected]>
Signed-off-by: Michael S. Tsirkin <[email protected]>
Diffstat (limited to 'net/lapb/lapb_out.c')
0 files changed, 0 insertions, 0 deletions