diff options
| author | Joerg Roedel <[email protected]> | 2019-02-07 12:59:16 +0100 |
|---|---|---|
| committer | Michael S. Tsirkin <[email protected]> | 2019-03-06 11:19:15 -0500 |
| commit | e6d6dd6c875eb3c9b69bb640419405726e6e0bbe (patch) | |
| tree | 0392d073aef16f875c6772cdda08554d8798a45a /lib/test_overflow.c | |
| parent | 133d624b1cee16906134e92d5befb843b58bcf31 (diff) | |
virtio: Introduce virtio_max_dma_size()
This function returns the maximum segment size for a single
dma transaction of a virtio device. The possible limit comes
from the SWIOTLB implementation in the Linux kernel, that
has an upper limit of (currently) 256kb of contiguous
memory it can map. Other DMA-API implementations might also
have limits.
Use the new dma_max_mapping_size() function to determine the
maximum mapping size when DMA-API is in use for virtio.
Cc: [email protected]
Reviewed-by: Konrad Rzeszutek Wilk <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
Signed-off-by: Joerg Roedel <[email protected]>
Signed-off-by: Michael S. Tsirkin <[email protected]>
Diffstat (limited to 'lib/test_overflow.c')
0 files changed, 0 insertions, 0 deletions