search for: vdpasim_dev_attr

..._sim_net.c | 6 ++---- 4 files changed, 21 insertions(+), 11 deletions(-) diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim.h b/drivers/vdpa/vdpa_sim/vdpa_sim.h index 144858636c10..acee20faaf6a 100644 --- a/drivers/vdpa/vdpa_sim/vdpa_sim.h +++ b/drivers/vdpa/vdpa_sim/vdpa_sim.h @@ -45,7 +45,7 @@ struct vdpasim_dev_attr { u32 ngroups; u32 nas; - work_func_t work_fn; + void (*work_fn)(struct vdpasim *vdpasim); void (*get_config)(struct vdpasim *vdpasim, void *config); void (*set_config)(struct vdpasim *vdpasim, const void *config); int (*get_stats)(struct vdpasim *vdpasim, u16 idx, @@ -78,6 +78,7 @@ str...

This series adds support for the use of user virtual addresses in the vDPA simulator devices. The main reason for this change is to lift the pinning of all guest memory. Especially with virtio devices implemented in software. The next step would be to generalize the code in vdpa-sim to allow the implementation of in-kernel software devices. Similar to vhost, but using vDPA so we can reuse the

v2: - rebased on Linus' tree, commit ae3419fbac84 ("vc_screen: don't clobber return value in vcs_read") - removed `struct task_struct *owner` param (unused for now, maybe ?useful to support cgroups) [Jason] - add unbind_mm callback [Jason] - call the new unbind_mm callback during the release [Jason] - avoid to call bind_mm callback after the reset, since the device ?is not

...IM_NOTIFY_DEFVAL) > + schedule_work(&vdpasim->work); > + > +out: > + schedule_delayed_work(&vdpasim->notify_work, > + msecs_to_jiffies(VDPASIM_VRING_POLL_PERIOD)); > +} > + > struct vdpasim *vdpasim_create(struct vdpasim_dev_attr *dev_attr, > const struct vdpa_dev_set_config *config) > { > @@ -287,6 +311,13 @@ struct vdpasim *vdpasim_create(struct vdpasim_dev_attr *dev_attr, > set_dma_ops(dev, &vdpasim_dma_ops); > vdpasim->vdpa.mdev = dev_attr->mgmt_de...

...d9 100644 > --- a/drivers/vdpa/vdpa_sim/vdpa_sim.h > +++ b/drivers/vdpa/vdpa_sim/vdpa_sim.h > @@ -59,6 +59,7 @@ struct vdpasim { > struct vdpasim_virtqueue *vqs; > struct kthread_worker *worker; > struct kthread_work work; > + struct mm_struct *mm_bound; > struct vdpasim_dev_attr dev_attr; > /* mutex to synchronize virtqueue state */ > struct mutex mutex; > diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim.c b/drivers/vdpa/vdpa_sim/vdpa_sim.c > index ab4cfb82c237..23c891cdcd54 100644 > --- a/drivers/vdpa/vdpa_sim/vdpa_sim.c > +++ b/drivers/vdpa/vdpa_sim/vd...

...--git a/drivers/vdpa/vdpa_sim/vdpa_sim.h b/drivers/vdpa/vdpa_sim/vdpa_sim.h index ce83f9130a5d..4774292fba8c 100644 --- a/drivers/vdpa/vdpa_sim/vdpa_sim.h +++ b/drivers/vdpa/vdpa_sim/vdpa_sim.h @@ -60,8 +60,8 @@ struct vdpasim { struct kthread_worker *worker; struct kthread_work work; struct vdpasim_dev_attr dev_attr; - /* spinlock to synchronize virtqueue state */ - spinlock_t lock; + /* mutex to synchronize virtqueue state */ + struct mutex mutex; /* virtio config according to device type */ void *config; struct vhost_iotlb *iommu; diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim.c b/drivers/vdpa/vd...

This series is mainly for testing live migration between 2 vdpa_sim_blk devices. The first patch is preparation and moves the buffer allocation into devices, the second patch adds the `shared_buffer_mutex` parameter to vdpa_sim_blk to use the same ramdisk for all devices. Tested with QEMU v8.0.0-rc2 in this way: modprobe vhost_vdpa modprobe vdpa_sim_blk shared_backend=true vdpa dev add mgmtdev

...rs/vdpa/vdpa_sim/vdpa_sim.h > +++ b/drivers/vdpa/vdpa_sim/vdpa_sim.h > @@ -59,6 +59,7 @@ struct vdpasim { > struct vdpasim_virtqueue *vqs; > struct kthread_worker *worker; > struct kthread_work work; > + struct mm_struct *mm_bound; > struct vdpasim_dev_attr dev_attr; > /* mutex to synchronize virtqueue state */ > struct mutex mutex; > diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim.c b/drivers/vdpa/vdpa_sim/vdpa_sim.c > index ab4cfb82c237..23c891cdcd54 100644 > --- a/drivers/vdpa/vdpa_sim/vdpa_sim.c > +++ b/drivers/vdpa/v...

...rs/vdpa/vdpa_sim/vdpa_sim.h > +++ b/drivers/vdpa/vdpa_sim/vdpa_sim.h > @@ -59,6 +59,7 @@ struct vdpasim { > struct vdpasim_virtqueue *vqs; > struct kthread_worker *worker; > struct kthread_work work; > + struct mm_struct *mm_bound; > struct vdpasim_dev_attr dev_attr; > /* mutex to synchronize virtqueue state */ > struct mutex mutex; > diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim.c b/drivers/vdpa/vdpa_sim/vdpa_sim.c > index a28103a67ae7..eda26bc33df5 100644 > --- a/drivers/vdpa/vdpa_sim/vdpa_sim.c > +++ b/drivers/vdpa/v...

This series adds support for the use of user virtual addresses in the vDPA simulator devices. The main reason for this change is to lift the pinning of all guest memory. Especially with virtio devices implemented in software. The next step would be to generalize the code in vdpa-sim to allow the implementation of in-kernel software devices. Similar to vhost, but using vDPA so we can reuse the