Messages in this thread Patch in this message |  | | From | Eli Cohen <> | Subject | RE: [PATCH 4/5] vdpa: set dma mask for vDPA device | Date | Sun, 15 Jan 2023 11:07:18 +0000 |
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> From: Jason Wang <jasowang@redhat.com> > Sent: Wednesday, 11 January 2023 8:28 > To: mst@redhat.com; jasowang@redhat.com > Cc: Eli Cohen <elic@nvidia.com>; gdawar@amd.com; > virtualization@lists.linux-foundation.org; linux-kernel@vger.kernel.org; > tanuj.kamde@amd.com > Subject: [PATCH 4/5] vdpa: set dma mask for vDPA device > > 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. > > Signed-off-by: Jason Wang <jasowang@redhat.com> Reviewed-by: Eli Cohen <elic@nvidia.com> Tested-by: <elic@nvidia.com> > --- > drivers/vdpa/vdpa.c | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/drivers/vdpa/vdpa.c b/drivers/vdpa/vdpa.c > index 8ef7aa1365cc..6821b2850bbb 100644 > --- a/drivers/vdpa/vdpa.c > +++ b/drivers/vdpa/vdpa.c > @@ -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); > -- > 2.25.1
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