search for: vhost_mdev_set_backend

...ble mdev device; - Userspace opens this mdev device with VFIO API (including doing IOMMU programming for this mdev device with VFIO's container/group based interface); - Userspace opens /dev/vhost-mdev and gets vhost fd; - Userspace uses vhost ioctls to setup vhost (userspace should do VHOST_MDEV_SET_BACKEND ioctl with VFIO group fd and device fd first before doing other vhost ioctls); Only compile test has been done for this series for now. RFCv3: https://patchwork.kernel.org/patch/11117785/ [1] https://lkml.org/lkml/2019/9/10/135 Tiwei Bie (3): vfio: support getting vfio device from device fd...

...ble mdev device; - Userspace opens this mdev device with VFIO API (including doing IOMMU programming for this mdev device with VFIO's container/group based interface); - Userspace opens /dev/vhost-mdev and gets vhost fd; - Userspace uses vhost ioctls to setup vhost (userspace should do VHOST_MDEV_SET_BACKEND ioctl with VFIO group fd and device fd first before doing other vhost ioctls); Only compile test has been done for this series for now. RFCv3: https://patchwork.kernel.org/patch/11117785/ [1] https://lkml.org/lkml/2019/9/10/135 Tiwei Bie (3): vfio: support getting vfio device from device fd...

...DEV_S_STOPPED; + vhost_mdev_stop_backend(m); + } + + vhost_dev_stop(&m->dev); + vhost_dev_cleanup(&m->dev); + + kfree(m->dev.vqs); + kfree(m->vqs); + + vfio_device_put(m->vfio_device); + vfio_group_put_external_user(m->vfio_group); + + m->mdev = NULL; +} + +static long vhost_mdev_set_backend(struct vhost_mdev *m, + struct vhost_mdev_backend __user *argp) +{ + struct vhost_mdev_backend backend; + struct mdev_device *mdev; + struct vhost_dev *dev; + struct vhost_virtqueue **vqs; + struct file *file; + struct vfio_device *device; + struct vfio_group *group; + unsigned long magic; +...

...dev_stop(&m->dev); > + vhost_dev_cleanup(&m->dev); > + > + kfree(m->dev.vqs); > + kfree(m->vqs); > + > + vfio_device_put(m->vfio_device); > + vfio_group_put_external_user(m->vfio_group); > + > + m->mdev = NULL; > +} > + > +static long vhost_mdev_set_backend(struct vhost_mdev *m, > + struct vhost_mdev_backend __user *argp) > +{ > + struct vhost_mdev_backend backend; > + struct mdev_device *mdev; > + struct vhost_dev *dev; > + struct vhost_virtqueue **vqs; > + struct file *file; > + struct vfio_device *device; > + struct...

...ding > > doing IOMMU programming for this mdev device with VFIO's > > container/group based interface); > > > > - Userspace opens /dev/vhost-mdev and gets vhost fd; > > > > - Userspace uses vhost ioctls to setup vhost (userspace should > > do VHOST_MDEV_SET_BACKEND ioctl with VFIO group fd and device > > fd first before doing other vhost ioctls); > > > > Only compile test has been done for this series for now. > > > Have a hard thought on the architecture: Thanks a lot! Do appreciate it! > > 1) Create a vhost char dev...

...ding > > doing IOMMU programming for this mdev device with VFIO's > > container/group based interface); > > > > - Userspace opens /dev/vhost-mdev and gets vhost fd; > > > > - Userspace uses vhost ioctls to setup vhost (userspace should > > do VHOST_MDEV_SET_BACKEND ioctl with VFIO group fd and device > > fd first before doing other vhost ioctls); > > > > Only compile test has been done for this series for now. > > > Have a hard thought on the architecture: Thanks a lot! Do appreciate it! > > 1) Create a vhost char dev...

...this mdev device with VFIO API (including > doing IOMMU programming for this mdev device with VFIO's > container/group based interface); > > - Userspace opens /dev/vhost-mdev and gets vhost fd; > > - Userspace uses vhost ioctls to setup vhost (userspace should > do VHOST_MDEV_SET_BACKEND ioctl with VFIO group fd and device > fd first before doing other vhost ioctls); > > Only compile test has been done for this series for now. Have a hard thought on the architecture: 1) Create a vhost char device and pass vfio mdev device fd to it as a backend and translate vhost-md...

...doing IOMMU programming for this mdev device with VFIO's >>> container/group based interface); >>> >>> - Userspace opens /dev/vhost-mdev and gets vhost fd; >>> >>> - Userspace uses vhost ioctls to setup vhost (userspace should >>> do VHOST_MDEV_SET_BACKEND ioctl with VFIO group fd and device >>> fd first before doing other vhost ioctls); >>> >>> Only compile test has been done for this series for now. >> >> Have a hard thought on the architecture: > Thanks a lot! Do appreciate it! > >> 1) Create...

...with VFIO's > > > > container/group based interface); > > > > > > > > - Userspace opens /dev/vhost-mdev and gets vhost fd; > > > > > > > > - Userspace uses vhost ioctls to setup vhost (userspace should > > > > do VHOST_MDEV_SET_BACKEND ioctl with VFIO group fd and device > > > > fd first before doing other vhost ioctls); > > > > > > > > Only compile test has been done for this series for now. > > > > > > Have a hard thought on the architecture: > > Thanks a lot! Do...

...with VFIO's > > > > container/group based interface); > > > > > > > > - Userspace opens /dev/vhost-mdev and gets vhost fd; > > > > > > > > - Userspace uses vhost ioctls to setup vhost (userspace should > > > > do VHOST_MDEV_SET_BACKEND ioctl with VFIO group fd and device > > > > fd first before doing other vhost ioctls); > > > > > > > > Only compile test has been done for this series for now. > > > > > > Have a hard thought on the architecture: > > Thanks a lot! Do...