search for: umem

...ers/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...

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

...vers/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_...

...vers/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_...

...vers/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_...

...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...

...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...

...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...

...0,6 +280,10 @@ static void vhost_vq_reset(struct vhost_dev *dev, vq->call_ctx = NULL; vq->call = NULL; vq->log_ctx = NULL; + vq->iotlb_call = NULL; + vq->iotlb_call_ctx = NULL; + vq->iotlb_request = NULL; + vq->pending_request.flags.type = VHOST_IOTLB_INVALIDATE; vq->umem = NULL; vq->is_le = virtio_legacy_is_little_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...

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

...es, int, 0444); +MODULE_PARM_DESC(max_iotlb_entries, + "Maximum number of iotlb entries. (default: 2048)"); enum { VHOST_MEMORY_F_LOG = 0x1, @@ -309,6 +313,7 @@ static void vhost_vq_reset(struct vhost_dev *dev, vhost_disable_cross_endian(vq); vq->busyloop_timeout = 0; vq->umem = NULL; + vq->iotlb = NULL; } static int vhost_worker(void *data) @@ -413,9 +418,14 @@ 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);...

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

...t(struct vhost_dev *dev, > vq->call_ctx = NULL; > vq->call = NULL; > vq->log_ctx = NULL; > + vq->iotlb_call = NULL; > + vq->iotlb_call_ctx = NULL; > + vq->iotlb_request = NULL; > + vq->pending_request.flags.type = VHOST_IOTLB_INVALIDATE; > vq->umem = NULL; > vq->is_le = virtio_legacy_is_little_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-...

...t(struct vhost_dev *dev, > vq->call_ctx = NULL; > vq->call = NULL; > vq->log_ctx = NULL; > + vq->iotlb_call = NULL; > + vq->iotlb_call_ctx = NULL; > + vq->iotlb_request = NULL; > + vq->pending_request.flags.type = VHOST_IOTLB_INVALIDATE; > vq->umem = NULL; > vq->is_le = virtio_legacy_is_little_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-...

v2: * Rewrote the conditional to make the vq access check clearer [Linus] * Added Patch 2 to make the return type consistent and harder to misuse [Linus] The first patch fixes the vhost virtqueue access check which was recently broken. The second patch replaces the int return type with bool to prevent future bugs. Stefan Hajnoczi (2): vhost: fix vhost_vq_access_ok() log check vhost: