search for: iotlb_lock

...LB_SIZE - 1); +} + static void vhost_poll_func(struct file *file, wait_queue_head_t *wqh, poll_table *pt) { @@ -384,8 +389,14 @@ void vhost_dev_init(struct vhost_dev *dev, dev->memory = NULL; dev->mm = NULL; spin_lock_init(&dev->work_lock); + spin_lock_init(&dev->iotlb_lock); + mutex_init(&dev->iotlb_req_mutex); INIT_LIST_HEAD(&dev->work_list); dev->worker = NULL; + dev->iotlb_request = NULL; + dev->iotlb_ctx = NULL; + dev->iotlb_file = NULL; + dev->pending_request.flags.type = VHOST_IOTLB_INVALIDATE; for (i = 0; i < dev->nvq...

...LB_SIZE - 1); +} + static void vhost_poll_func(struct file *file, wait_queue_head_t *wqh, poll_table *pt) { @@ -384,8 +389,14 @@ void vhost_dev_init(struct vhost_dev *dev, dev->memory = NULL; dev->mm = NULL; spin_lock_init(&dev->work_lock); + spin_lock_init(&dev->iotlb_lock); + mutex_init(&dev->iotlb_req_mutex); INIT_LIST_HEAD(&dev->work_list); dev->worker = NULL; + dev->iotlb_request = NULL; + dev->iotlb_ctx = NULL; + dev->iotlb_file = NULL; + dev->pending_request.flags.type = VHOST_IOTLB_INVALIDATE; for (i = 0; i < dev->nvq...

...st_poll_func(struct file *file, wait_queue_head_t *wqh, > poll_table *pt) > { > @@ -384,8 +389,14 @@ void vhost_dev_init(struct vhost_dev *dev, > dev->memory = NULL; > dev->mm = NULL; > spin_lock_init(&dev->work_lock); > + spin_lock_init(&dev->iotlb_lock); > + mutex_init(&dev->iotlb_req_mutex); > INIT_LIST_HEAD(&dev->work_list); > dev->worker = NULL; > + dev->iotlb_request = NULL; > + dev->iotlb_ctx = NULL; > + dev->iotlb_file = NULL; > + dev->pending_request.flags.type = VHOST_IOTLB_INVALIDATE;...

...le_endian(); vhost_vq_reset_user_be(vq); @@ -387,8 +391,10 @@ void vhost_dev_init(struct vhost_dev *dev, dev->log_ctx = NULL; dev->log_file = NULL; dev->umem = NULL; + dev->iotlb = NULL; dev->mm = NULL; spin_lock_init(&dev->work_lock); + spin_lock_init(&dev->iotlb_lock); INIT_LIST_HEAD(&dev->work_list); dev->worker = NULL; @@ -537,6 +543,15 @@ void vhost_dev_stop(struct vhost_dev *dev) } EXPORT_SYMBOL_GPL(vhost_dev_stop); +static void vhost_umem_free(struct vhost_umem *umem, + struct vhost_umem_node *node) +{ + vhost_umem_interval_tree_r...

...mem = NULL; + dev->iotlb = NULL; dev->mm = NULL; spin_lock_init(&dev->work_lock); INIT_LIST_HEAD(&dev->work_list); + init_waitqueue_head(&dev->wait); + INIT_LIST_HEAD(&dev->read_list); + INIT_LIST_HEAD(&dev->pending_list); + spin_lock_init(&dev->iotlb_lock); dev->worker = NULL; for (i = 0; i < dev->nvqs; ++i) { @@ -563,6 +573,15 @@ void vhost_dev_stop(struct vhost_dev *dev) } EXPORT_SYMBOL_GPL(vhost_dev_stop); +static void vhost_umem_free(struct vhost_umem *umem, + struct vhost_umem_node *node) +{ + vhost_umem_interval_tree_r...

This patch tries to implement an device IOTLB for vhost. This could be used with for co-operation with userspace(qemu) implementation of iommu for a secure DMA environment (DMAR) in guest. The idea is simple. When vhost meets an IOTLB miss, it will request the assistance of userspace to do the translation, this is done through: - Fill the translation request in a preset userspace address (This

This patch tries to implement an device IOTLB for vhost. This could be used with for co-operation with userspace(qemu) implementation of iommu for a secure DMA environment (DMAR) in guest. The idea is simple. When vhost meets an IOTLB miss, it will request the assistance of userspace to do the translation, this is done through: - Fill the translation request in a preset userspace address (This

...); > @@ -387,8 +391,10 @@ void vhost_dev_init(struct vhost_dev *dev, > dev->log_ctx = NULL; > dev->log_file = NULL; > dev->umem = NULL; > + dev->iotlb = NULL; > dev->mm = NULL; > spin_lock_init(&dev->work_lock); > + spin_lock_init(&dev->iotlb_lock); > INIT_LIST_HEAD(&dev->work_list); > dev->worker = NULL; > > @@ -537,6 +543,15 @@ void vhost_dev_stop(struct vhost_dev *dev) > } > EXPORT_SYMBOL_GPL(vhost_dev_stop); > > +static void vhost_umem_free(struct vhost_umem *umem, > + struct vhost_ume...

...); > @@ -387,8 +391,10 @@ void vhost_dev_init(struct vhost_dev *dev, > dev->log_ctx = NULL; > dev->log_file = NULL; > dev->umem = NULL; > + dev->iotlb = NULL; > dev->mm = NULL; > spin_lock_init(&dev->work_lock); > + spin_lock_init(&dev->iotlb_lock); > INIT_LIST_HEAD(&dev->work_list); > dev->worker = NULL; > > @@ -537,6 +543,15 @@ void vhost_dev_stop(struct vhost_dev *dev) > } > EXPORT_SYMBOL_GPL(vhost_dev_stop); > > +static void vhost_umem_free(struct vhost_umem *umem, > + struct vhost_ume...

...reset(vq); -#if VHOST_ARCH_CAN_ACCEL_UACCESS +#ifdef VHOST_ARCH_CAN_ACCEL_UACCESS vhost_reset_vq_maps(vq); #endif } @@ -635,7 +635,7 @@ void vhost_dev_init(struct vhost_dev *dev, INIT_LIST_HEAD(&dev->read_list); INIT_LIST_HEAD(&dev->pending_list); spin_lock_init(&dev->iotlb_lock); -#if VHOST_ARCH_CAN_ACCEL_UACCESS +#ifdef VHOST_ARCH_CAN_ACCEL_UACCESS vhost_init_maps(dev); #endif @@ -726,7 +726,7 @@ long vhost_dev_set_owner(struct vhost_dev *dev) if (err) goto err_cgroup; -#if VHOST_ARCH_CAN_ACCEL_UACCESS +#ifdef VHOST_ARCH_CAN_ACCEL_UACCESS err = mmu_notifier...

...reset(vq); -#if VHOST_ARCH_CAN_ACCEL_UACCESS +#ifdef VHOST_ARCH_CAN_ACCEL_UACCESS vhost_reset_vq_maps(vq); #endif } @@ -635,7 +635,7 @@ void vhost_dev_init(struct vhost_dev *dev, INIT_LIST_HEAD(&dev->read_list); INIT_LIST_HEAD(&dev->pending_list); spin_lock_init(&dev->iotlb_lock); -#if VHOST_ARCH_CAN_ACCEL_UACCESS +#ifdef VHOST_ARCH_CAN_ACCEL_UACCESS vhost_init_maps(dev); #endif @@ -726,7 +726,7 @@ long vhost_dev_set_owner(struct vhost_dev *dev) if (err) goto err_cgroup; -#if VHOST_ARCH_CAN_ACCEL_UACCESS +#ifdef VHOST_ARCH_CAN_ACCEL_UACCESS err = mmu_notifier...

This patch tries to implement an device IOTLB for vhost. This could be used with for co-operation with userspace IOMMU implementation (qemu) for a secure DMA environment (DMAR) in guest. The idea is simple. When vhost meets an IOTLB miss, it will request the assistance of userspace to do the translation, this is done through: - when there's a IOTLB miss, it will notify userspace through

This patch tries to implement an device IOTLB for vhost. This could be used with for co-operation with userspace IOMMU implementation (qemu) for a secure DMA environment (DMAR) in guest. The idea is simple. When vhost meets an IOTLB miss, it will request the assistance of userspace to do the translation, this is done through: - when there's a IOTLB miss, it will notify userspace through

...se user's VA */ > + bool use_va; > + > /* Last available index we saw (ie. where we're up to). */ > u16 last_avail_idx; > > @@ -279,7 +282,7 @@ void vringh_set_iotlb(struct vringh *vrh, struct vhost_iotlb *iotlb, > spinlock_t *iotlb_lock); > > int vringh_init_iotlb(struct vringh *vrh, u64 features, > - unsigned int num, bool weak_barriers, > + unsigned int num, bool weak_barriers, bool use_va, > struct vring_desc *desc, > struct v...

This patch tries to implement an device IOTLB for vhost. This could be used with for co-operation with userspace IOMMU implementation (qemu) for a secure DMA environment (DMAR) in guest. The idea is simple. When vhost meets an IOTLB miss, it will request the assistance of userspace to do the translation, this is done through: - when there's a IOTLB miss, it will notify userspace through

This patch tries to implement an device IOTLB for vhost. This could be used with for co-operation with userspace IOMMU implementation (qemu) for a secure DMA environment (DMAR) in guest. The idea is simple. When vhost meets an IOTLB miss, it will request the assistance of userspace to do the translation, this is done through: - when there's a IOTLB miss, it will notify userspace through

..._dev *dev, struct vhost_umem *umem) { int i; - vhost_dev_cleanup(dev, true); + vhost_dev_cleanup(dev); /* Restore memory to default empty mapping. */ INIT_LIST_HEAD(&umem->umem_list); @@ -611,8 +611,7 @@ static void vhost_clear_msg(struct vhost_dev *dev) spin_unlock(&dev->iotlb_lock); } -/* Caller should have device mutex if and only if locked is set */ -void vhost_dev_cleanup(struct vhost_dev *dev, bool locked) +void vhost_dev_cleanup(struct vhost_dev *dev) { int i; diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h index 79c6e7a60a5e..ff4d918e3e0a 100644 ---...

This patch tries to implement an device IOTLB for vhost. This could be used with for co-operation with userspace IOMMU implementation (qemu) for a secure DMA environment (DMAR) in guest. The idea is simple. When vhost meets an IOTLB miss, it will request the assistance of userspace to do the translation, this is done through: - when there's a IOTLB miss, it will notify userspace through

This patch tries to implement an device IOTLB for vhost. This could be used with for co-operation with userspace IOMMU implementation (qemu) for a secure DMA environment (DMAR) in guest. The idea is simple. When vhost meets an IOTLB miss, it will request the assistance of userspace to do the translation, this is done through: - when there's a IOTLB miss, it will notify userspace through

...CESS > +#ifdef VHOST_ARCH_CAN_ACCEL_UACCESS > vhost_reset_vq_maps(vq); > #endif > } > @@ -635,7 +635,7 @@ void vhost_dev_init(struct vhost_dev *dev, > INIT_LIST_HEAD(&dev->read_list); > INIT_LIST_HEAD(&dev->pending_list); > spin_lock_init(&dev->iotlb_lock); > -#if VHOST_ARCH_CAN_ACCEL_UACCESS > +#ifdef VHOST_ARCH_CAN_ACCEL_UACCESS > vhost_init_maps(dev); > #endif > > @@ -726,7 +726,7 @@ long vhost_dev_set_owner(struct vhost_dev *dev) > if (err) > goto err_cgroup; > > -#if VHOST_ARCH_CAN_ACCEL_UACCESS > +#...