On Wed, Aug 25, 2021 at 2:10 AM Michael S. Tsirkin <mst@xxxxxxxxxx> wrote: > > On Wed, Aug 18, 2021 at 08:06:41PM +0800, Xie Yongji wrote: > > This VDUSE driver enables implementing software-emulated vDPA > > devices in userspace. The vDPA device is created by > > ioctl(VDUSE_CREATE_DEV) on /dev/vduse/control. Then a char device > > interface (/dev/vduse/$NAME) is exported to userspace for device > > emulation. > > > > In order to make the device emulation more secure, the device's > > control path is handled in kernel. A message mechnism is introduced > > to forward some dataplane related control messages to userspace. > > > > And in the data path, the DMA buffer will be mapped into userspace > > address space through different ways depending on the vDPA bus to > > which the vDPA device is attached. In virtio-vdpa case, the MMU-based > > software IOTLB is used to achieve that. And in vhost-vdpa case, the > > DMA buffer is reside in a userspace memory region which can be shared > > to the VDUSE userspace processs via transferring the shmfd. > > > > For more details on VDUSE design and usage, please see the follow-on > > Documentation commit. > > > > Signed-off-by: Xie Yongji <xieyongji@xxxxxxxxxxxxx> > > Build bot seems unhappy with this patch. > Yes, this is because the series relies on the unmerged patch: https://lore.kernel.org/lkml/20210705071910.31965-1-jasowang@xxxxxxxxxx/ Do I need to remove this dependency in the next version? Thanks, Yongji
