search for: vhost_umem

...a/drivers/vhost/net.c b/drivers/vhost/net.c index e158159671fa..e4a20d7a2921 100644 --- a/drivers/vhost/net.c +++ b/drivers/vhost/net.c @@ -1594,7 +1594,7 @@ static long vhost_net_reset_owner(struct vhost_net *n) struct socket *tx_sock = NULL; struct socket *rx_sock = NULL; long err; - struct vhost_umem *umem; + struct vhost_iotlb *umem; mutex_lock(&n->dev.mutex); err = vhost_dev_check_owner(&n->dev); diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c index f44340b41494..9059b95cac83 100644 --- a/drivers/vhost/vhost.c +++ b/drivers/vhost/vhost.c @@ -50,10 +50,6 @@ enum...

...b/drivers/vhost/net.c index 9eda69e..481db96 100644 --- a/drivers/vhost/net.c +++ b/drivers/vhost/net.c @@ -968,20 +968,20 @@ static long vhost_net_reset_owner(struct vhost_net *n) struct socket *tx_sock = NULL; struct socket *rx_sock = NULL; long err; - struct vhost_memory *memory; + struct vhost_umem *umem; mutex_lock(&n->dev.mutex); err = vhost_dev_check_owner(&n->dev); if (err) goto done; - memory = vhost_dev_reset_owner_prepare(); - if (!memory) { + umem = vhost_dev_reset_owner_prepare(); + if (!umem) { err = -ENOMEM; goto done; } vhost_net_stop(n, &tx_...

...b/drivers/vhost/net.c index 9eda69e..481db96 100644 --- a/drivers/vhost/net.c +++ b/drivers/vhost/net.c @@ -968,20 +968,20 @@ static long vhost_net_reset_owner(struct vhost_net *n) struct socket *tx_sock = NULL; struct socket *rx_sock = NULL; long err; - struct vhost_memory *memory; + struct vhost_umem *umem; mutex_lock(&n->dev.mutex); err = vhost_dev_check_owner(&n->dev); if (err) goto done; - memory = vhost_dev_reset_owner_prepare(); - if (!memory) { + umem = vhost_dev_reset_owner_prepare(); + if (!umem) { err = -ENOMEM; goto done; } vhost_net_stop(n, &tx_...

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

...b/drivers/vhost/net.c index 9eda69e..481db96 100644 --- a/drivers/vhost/net.c +++ b/drivers/vhost/net.c @@ -968,20 +968,20 @@ static long vhost_net_reset_owner(struct vhost_net *n) struct socket *tx_sock = NULL; struct socket *rx_sock = NULL; long err; - struct vhost_memory *memory; + struct vhost_umem *umem; mutex_lock(&n->dev.mutex); err = vhost_dev_check_owner(&n->dev); if (err) goto done; - memory = vhost_dev_reset_owner_prepare(); - if (!memory) { + umem = vhost_dev_reset_owner_prepare(); + if (!umem) { err = -ENOMEM; goto done; } vhost_net_stop(n, &tx_...

...1db96 100644 > --- a/drivers/vhost/net.c > +++ b/drivers/vhost/net.c > @@ -968,20 +968,20 @@ static long vhost_net_reset_owner(struct vhost_net *n) > struct socket *tx_sock = NULL; > struct socket *rx_sock = NULL; > long err; > - struct vhost_memory *memory; > + struct vhost_umem *umem; > > mutex_lock(&n->dev.mutex); > err = vhost_dev_check_owner(&n->dev); > if (err) > goto done; > - memory = vhost_dev_reset_owner_prepare(); > - if (!memory) { > + umem = vhost_dev_reset_owner_prepare(); > + if (!umem) { > err = -ENOM...

...1db96 100644 > --- a/drivers/vhost/net.c > +++ b/drivers/vhost/net.c > @@ -968,20 +968,20 @@ static long vhost_net_reset_owner(struct vhost_net *n) > struct socket *tx_sock = NULL; > struct socket *rx_sock = NULL; > long err; > - struct vhost_memory *memory; > + struct vhost_umem *umem; > > mutex_lock(&n->dev.mutex); > err = vhost_dev_check_owner(&n->dev); > if (err) > goto done; > - memory = vhost_dev_reset_owner_prepare(); > - if (!memory) { > + umem = vhost_dev_reset_owner_prepare(); > + if (!umem) { > err = -ENOM...

...1db96 100644 > --- a/drivers/vhost/net.c > +++ b/drivers/vhost/net.c > @@ -968,20 +968,20 @@ static long vhost_net_reset_owner(struct vhost_net *n) > struct socket *tx_sock = NULL; > struct socket *rx_sock = NULL; > long err; > - struct vhost_memory *memory; > + struct vhost_umem *umem; > > mutex_lock(&n->dev.mutex); > err = vhost_dev_check_owner(&n->dev); > if (err) > goto done; > - memory = vhost_dev_reset_owner_prepare(); > - if (!memory) { > + umem = vhost_dev_reset_owner_prepare(); > + if (!umem) { > err = -ENOM...

...poll *poll); -void vhost_work_flush(struct vhost_dev *dev, struct vhost_work *work); -long vhost_vring_ioctl(struct vhost_dev *d, int ioctl, void __user *argp); - -struct vhost_log { - u64 addr; - u64 len; -}; - -#define START(node) ((node)->start) -#define LAST(node) ((node)->last) - -struct vhost_umem_node { - struct rb_node rb; - struct list_head link; - __u64 start; - __u64 last; - __u64 size; - __u64 userspace_addr; - __u32 perm; - __u32 flags_padding; - __u64 __subtree_last; -}; - -struct vhost_umem { - struct rb_root umem_tree; - struct list_head umem_list; - int numem; -}; - -enum vhost_ua...

...poll *poll); -void vhost_work_flush(struct vhost_dev *dev, struct vhost_work *work); -long vhost_vring_ioctl(struct vhost_dev *d, int ioctl, void __user *argp); - -struct vhost_log { - u64 addr; - u64 len; -}; - -#define START(node) ((node)->start) -#define LAST(node) ((node)->last) - -struct vhost_umem_node { - struct rb_node rb; - struct list_head link; - __u64 start; - __u64 last; - __u64 size; - __u64 userspace_addr; - __u32 perm; - __u32 flags_padding; - __u64 __subtree_last; -}; - -struct vhost_umem { - struct rb_root umem_tree; - struct list_head umem_list; - int numem; -}; - -enum vhost_ua...

...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_remove(node, &umem->umem_tree); + list_del(&node->link); + kfree(node); + umem->numem--; +} + static void vhost_umem_clean(struct vhost_umem *umem) { struct vhost_umem_node *node,...

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

...ev, struct vhost_work *work); > -long vhost_vring_ioctl(struct vhost_dev *d, int ioctl, void __user *argp); > - > -struct vhost_log { > - u64 addr; > - u64 len; > -}; > - > -#define START(node) ((node)->start) > -#define LAST(node) ((node)->last) > - > -struct vhost_umem_node { > - struct rb_node rb; > - struct list_head link; > - __u64 start; > - __u64 last; > - __u64 size; > - __u64 userspace_addr; > - __u32 perm; > - __u32 flags_padding; > - __u64 __subtree_last; > -}; > - > -struct vhost_umem { > - struct rb_root umem_tree...

...&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_remove(node, &umem->umem_tree); + list_del(&node->link); + kfree(node); + umem->numem--; +} + static void vhost_umem_clean(struct vhost_umem *umem) { struct vhost_umem_node *node,...

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

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