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vdpa: set dma mask for vDPA device

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Setting DMA mask for vDPA device in case that there are virtqueue that
is not backed by DMA so the vDPA device could be advertised as the DMA
device that is used by DMA API for software emulated virtqueues.

Reviewed-by: Eli Cohen <elic@nvidia.com>
Tested-by: Eli Cohen <elic@nvidia.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20230119061525.75068-5-jasowang@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Jason Wang 2023-01-19 14:15:24 +08:00 committed by Michael S. Tsirkin
parent a1baedb11e
commit 99fb2b838f
1 changed files with 5 additions and 0 deletions
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5
drivers/vdpa/vdpa.c
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@ -39,6 +39,11 @@ static int vdpa_dev_probe(struct device *d)
u32 max_num, min_num = 1;
int ret = 0;
d->dma_mask = &d->coherent_dma_mask;
ret = dma_set_mask_and_coherent(d, DMA_BIT_MASK(64));
if (ret)
return ret;
max_num = ops->get_vq_num_max(vdev);
if (ops->get_vq_num_min)
min_num = ops->get_vq_num_min(vdev);