[Intel-gfx] [RFT][PATCH v2 7/9] vfio: Rename user_iova of vfio_dma_rw()

[Tian, Kevin]

> From: Nicolin Chen <nicolinc at nvidia.com>
> Sent: Wednesday, July 6, 2022 2:28 PM
> 
> Following the updated vfio_pin/unpin_pages(), use the simpler "iova".
> 
> Signed-off-by: Nicolin Chen <nicolinc at nvidia.com>

Reviewed-by: Kevin Tian <kevin.tian at intel.com>