search for: vhost_vdpa_get_device_id

...>bind_mm(vdpa, v->vdev.mm); +} + +static void vhost_vdpa_unbind_mm(struct vhost_vdpa *v) +{ + struct vdpa_device *vdpa = v->vdpa; + const struct vdpa_config_ops *ops = vdpa->config; + + if (!vdpa->use_va || !ops->unbind_mm) + return; + + ops->unbind_mm(vdpa); +} + static long vhost_vdpa_get_device_id(struct vhost_vdpa *v, u8 __user *argp) { struct vdpa_device *vdpa = v->vdpa; @@ -709,6 +731,14 @@ static long vhost_vdpa_unlocked_ioctl(struct file *filep, case VHOST_VDPA_RESUME: r = vhost_vdpa_resume(v); break; + case VHOST_SET_OWNER: + r = vhost_dev_set_owner(d); + if (r) + bre...

...v) > +{ > + struct vdpa_device *vdpa = v->vdpa; > + const struct vdpa_config_ops *ops = vdpa->config; > + > + if (!vdpa->use_va || !ops->unbind_mm) > + return; > + > + ops->unbind_mm(vdpa); > +} > + > static long vhost_vdpa_get_device_id(struct vhost_vdpa *v, u8 __user *argp) > { > struct vdpa_device *vdpa = v->vdpa; > @@ -709,6 +731,14 @@ static long vhost_vdpa_unlocked_ioctl(struct file *filep, > case VHOST_VDPA_RESUME: > r = vhost_vdpa_resume(v); > break; >...

...> + > > +static void vhost_vdpa_reset(struct vhost_vdpa *v) > > +{ > > + struct vdpa_device *vdpa = v->vdpa; > > + const struct vdpa_config_ops *ops = vdpa->config; > > + > > + ops->set_status(vdpa, 0); > > +} > > + > > +static long vhost_vdpa_get_device_id(struct vhost_vdpa *v, u8 __user *argp) > > +{ > > + struct vdpa_device *vdpa = v->vdpa; > > + const struct vdpa_config_ops *ops = vdpa->config; > > + u32 device_id; > > + > > + device_id = ops->get_device_id(vdpa); > > + > > + if (copy_to_use...

...ch; > }; > > static DEFINE_IDA(vhost_vdpa_ida); > @@ -125,6 +128,7 @@ static void vhost_vdpa_reset(struct vhost_vdpa *v) > const struct vdpa_config_ops *ops = vdpa->config; > > ops->set_status(vdpa, 0); > + v->in_batch = 0; > } > > static long vhost_vdpa_get_device_id(struct vhost_vdpa *v, u8 __user *argp) > @@ -540,9 +544,10 @@ static int vhost_vdpa_map(struct vhost_vdpa *v, > > if (ops->dma_map) > r = ops->dma_map(vdpa, iova, size, pa, perm); > - else if (ops->set_map) > - r = ops->set_map(vdpa, dev->iotlb); > - else...

...ch; > }; > > static DEFINE_IDA(vhost_vdpa_ida); > @@ -125,6 +128,7 @@ static void vhost_vdpa_reset(struct vhost_vdpa *v) > const struct vdpa_config_ops *ops = vdpa->config; > > ops->set_status(vdpa, 0); > + v->in_batch = 0; > } > > static long vhost_vdpa_get_device_id(struct vhost_vdpa *v, u8 __user *argp) > @@ -540,9 +544,10 @@ static int vhost_vdpa_map(struct vhost_vdpa *v, > > if (ops->dma_map) > r = ops->dma_map(vdpa, iova, size, pa, perm); > - else if (ops->set_map) > - r = ops->set_map(vdpa, dev->iotlb); > - else...

...1); > + > + return IRQ_HANDLED; > +} > + > +static void vhost_vdpa_reset(struct vhost_vdpa *v) > +{ > + struct vdpa_device *vdpa = v->vdpa; > + const struct vdpa_config_ops *ops = vdpa->config; > + > + ops->set_status(vdpa, 0); > +} > + > +static long vhost_vdpa_get_device_id(struct vhost_vdpa *v, u8 __user *argp) > +{ > + struct vdpa_device *vdpa = v->vdpa; > + const struct vdpa_config_ops *ops = vdpa->config; > + u32 device_id; > + > + device_id = ops->get_device_id(vdpa); > + > + if (copy_to_user(argp, &device_id, sizeof(device_id...

...1); > + > + return IRQ_HANDLED; > +} > + > +static void vhost_vdpa_reset(struct vhost_vdpa *v) > +{ > + struct vdpa_device *vdpa = v->vdpa; > + const struct vdpa_config_ops *ops = vdpa->config; > + > + ops->set_status(vdpa, 0); > +} > + > +static long vhost_vdpa_get_device_id(struct vhost_vdpa *v, u8 __user *argp) > +{ > + struct vdpa_device *vdpa = v->vdpa; > + const struct vdpa_config_ops *ops = vdpa->config; > + u32 device_id; > + > + device_id = ops->get_device_id(vdpa); > + > + if (copy_to_user(argp, &device_id, sizeof(device_id...

....c @@ -118,9 +118,8 @@ static irqreturn_t vhost_vdpa_config_cb(void *private) static void vhost_vdpa_reset(struct vhost_vdpa *v) { struct vdpa_device *vdpa = v->vdpa; - const struct vdpa_config_ops *ops = vdpa->config; - ops->set_status(vdpa, 0); + vdpa_reset(vdpa); } static long vhost_vdpa_get_device_id(struct vhost_vdpa *v, u8 __user *argp) @@ -196,7 +195,6 @@ static long vhost_vdpa_get_config(struct vhost_vdpa *v, struct vhost_vdpa_config __user *c) { struct vdpa_device *vdpa = v->vdpa; - const struct vdpa_config_ops *ops = vdpa->config; struct vhost_vdpa_config config; unsig...

...ST_BACKEND_F_SUSPEND feature."); >>> + } >> >> I wonder why not let the device to decide? For networking device, we can >> live without suspend probably. >> > Right, but how can we know if this is a net device in init? I don't > think a switch (vhost_vdpa_get_device_id(dev)) is elegant. I meant the caller of vhost_vdpa_init() which is net_init_vhost_vdpa(). Thanks > > If the parent device does not need to be suspended i'd go with > exposing a suspend ioctl but do nothing in the parent device. After > that, it could even choose to return an er...

...vdpa_ida); > > > @@ -125,6 +128,7 @@ static void vhost_vdpa_reset(struct vhost_vdpa *v) > > > const struct vdpa_config_ops *ops = vdpa->config; > > > ops->set_status(vdpa, 0); > > > + v->in_batch = 0; > > > } > > > static long vhost_vdpa_get_device_id(struct vhost_vdpa *v, u8 __user *argp) > > > @@ -540,9 +544,10 @@ static int vhost_vdpa_map(struct vhost_vdpa *v, > > > if (ops->dma_map) > > > r = ops->dma_map(vdpa, iova, size, pa, perm); > > > - else if (ops->set_map) > > > - r = ops-...

...t minor; struct eventfd_ctx *config_ctx; + int in_batch; }; static DEFINE_IDA(vhost_vdpa_ida); @@ -125,6 +128,7 @@ static void vhost_vdpa_reset(struct vhost_vdpa *v) const struct vdpa_config_ops *ops = vdpa->config; ops->set_status(vdpa, 0); + v->in_batch = 0; } static long vhost_vdpa_get_device_id(struct vhost_vdpa *v, u8 __user *argp) @@ -540,9 +544,10 @@ static int vhost_vdpa_map(struct vhost_vdpa *v, if (ops->dma_map) r = ops->dma_map(vdpa, iova, size, pa, perm); - else if (ops->set_map) - r = ops->set_map(vdpa, dev->iotlb); - else + else if (ops->set_map) { + i...

...E_IDA(vhost_vdpa_ida); >> @@ -125,6 +128,7 @@ static void vhost_vdpa_reset(struct vhost_vdpa *v) >> const struct vdpa_config_ops *ops = vdpa->config; >> >> ops->set_status(vdpa, 0); >> + v->in_batch = 0; >> } >> >> static long vhost_vdpa_get_device_id(struct vhost_vdpa *v, u8 __user *argp) >> @@ -540,9 +544,10 @@ static int vhost_vdpa_map(struct vhost_vdpa *v, >> >> if (ops->dma_map) >> r = ops->dma_map(vdpa, iova, size, pa, perm); >> - else if (ops->set_map) >> - r = ops->set_map(vdpa,...

Hi all: This series tries to support batched IOTLB updating vhost-vdpa. Currently vhost-vdpa accepts userspace mapping via IOTLB API, and it can only forward one mapping to IOMMU or device through IOMMU API or dma_map(). Though set_map() is deisgend to have the capability to pass an rbtree based mapping to vDPA device, it's still be called at least once for each VHOST_IOTLB_UPDATE or

Hi all: This series tries to support batched IOTLB updating vhost-vdpa. Currently vhost-vdpa accepts userspace mapping via IOTLB API, and it can only forward one mapping to IOMMU or device through IOMMU API or dma_map(). Though set_map() is designed to have the capability to pass an rbtree based mapping to vDPA device, it's still be called at least once for each VHOST_IOTLB_UPDATE or

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

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

Config space endian-ness is currently a mess: fields are not tagged with the correct endian-ness so it's easy to make mistakes like instanciating config space in native endian-ness. The following patches adding sparse tagging are currently in my tree. Lightly tested. As a follow-up, I plan to add new APIs that handle modern config space in a more efficient way (bypassing the version check).