Re: [PATCH v2] drm/xen-front: Make shmem backed display buffer coherent

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



  Hi,

> +	if (!dma_map_sg(dev->dev, xen_obj->sgt->sgl, xen_obj->sgt->nents,
> +			DMA_BIDIRECTIONAL)) {
> +		ret = -EFAULT;
> +		goto fail_free_sgt;
> +	}

Hmm, so it seems the arm guys could not come up with a suggestion how to
solve that one in a better way.  Ok, lets go with this then.

But didn't we agree that this deserves a comment exmplaining the purpose
of the dma_map_sg() call is to flush caches and that there is no actual
DMA happening here?

cheers,
  Gerd

_______________________________________________
dri-devel mailing list
dri-devel@xxxxxxxxxxxxxxxxxxxxx
https://lists.freedesktop.org/mailman/listinfo/dri-devel




[Index of Archives]     [Linux DRI Users]     [Linux Intel Graphics]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [XFree86]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Linux Kernel]     [Linux SCSI]     [XFree86]
  Powered by Linux