On Thu, Jul 13, 2023 at 10:51:59AM -0400, Michael S. Tsirkin wrote: > On Thu, Jul 13, 2023 at 04:15:16AM -0700, Christoph Hellwig wrote: > > On Mon, Jul 10, 2023 at 11:42:32AM +0800, Xuan Zhuo wrote: > > > Added virtqueue_dma_dev() to get DMA device for virtio. Then the > > > caller can do dma operation in advance. The purpose is to keep memory > > > mapped across multiple add/get buf operations. > > > > This is just poking holes into the abstraction.. > > More specifically? Because now you expose a device that can't be used for the non-dma mapping case and shoud be hidden.
