search for: 5d64393

...- s, size); _iov->iov_base = (void __user *)(unsigned long) - (reg->userspace_addr + addr - reg->guest_phys_addr); + (node->userspace_addr + addr - node->start); s += size; addr += size; ++ret; diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h index d3f7674..5d64393 100644 --- a/drivers/vhost/vhost.h +++ b/drivers/vhost/vhost.h @@ -52,6 +52,25 @@ struct vhost_log { 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;...

...- s, size); _iov->iov_base = (void __user *)(unsigned long) - (reg->userspace_addr + addr - reg->guest_phys_addr); + (node->userspace_addr + addr - node->start); s += size; addr += size; ++ret; diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h index d3f7674..5d64393 100644 --- a/drivers/vhost/vhost.h +++ b/drivers/vhost/vhost.h @@ -52,6 +52,25 @@ struct vhost_log { 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;...

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

...- s, size); _iov->iov_base = (void __user *)(unsigned long) - (reg->userspace_addr + addr - reg->guest_phys_addr); + (node->userspace_addr + addr - node->start); s += size; addr += size; ++ret; diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h index d3f7674..5d64393 100644 --- a/drivers/vhost/vhost.h +++ b/drivers/vhost/vhost.h @@ -52,6 +52,25 @@ struct vhost_log { 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;...

...(void __user *)(unsigned long) > - (reg->userspace_addr + addr - reg->guest_phys_addr); > + (node->userspace_addr + addr - node->start); > s += size; > addr += size; > ++ret; > diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h > index d3f7674..5d64393 100644 > --- a/drivers/vhost/vhost.h > +++ b/drivers/vhost/vhost.h > @@ -52,6 +52,25 @@ struct vhost_log { > u64 len; > }; > > +#define START(node) ((node)->start) > +#define LAST(node) ((node)->last) > + > +struct vhost_umem_node { > + struct rb_node rb;...

...(void __user *)(unsigned long) > - (reg->userspace_addr + addr - reg->guest_phys_addr); > + (node->userspace_addr + addr - node->start); > s += size; > addr += size; > ++ret; > diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h > index d3f7674..5d64393 100644 > --- a/drivers/vhost/vhost.h > +++ b/drivers/vhost/vhost.h > @@ -52,6 +52,25 @@ struct vhost_log { > u64 len; > }; > > +#define START(node) ((node)->start) > +#define LAST(node) ((node)->last) > + > +struct vhost_umem_node { > + struct rb_node rb;...

...(void __user *)(unsigned long) > - (reg->userspace_addr + addr - reg->guest_phys_addr); > + (node->userspace_addr + addr - node->start); > s += size; > addr += size; > ++ret; > diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h > index d3f7674..5d64393 100644 > --- a/drivers/vhost/vhost.h > +++ b/drivers/vhost/vhost.h > @@ -52,6 +52,25 @@ struct vhost_log { > u64 len; > }; > > +#define START(node) ((node)->start) > +#define LAST(node) ((node)->last) > + > +struct vhost_umem_node { > + struct rb_node rb;...

...idx %d\n", - ret, i); + if (ret != -EAGAIN) + vq_err(vq, "Translation failure %d descriptor idx %d\n", + ret, i); return ret; } if (desc.flags & cpu_to_vhost16(vq, VRING_DESC_F_WRITE)) { diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h index 5d64393..4365104 100644 --- a/drivers/vhost/vhost.h +++ b/drivers/vhost/vhost.h @@ -62,13 +62,15 @@ struct vhost_umem_node { __u64 last; __u64 size; __u64 userspace_addr; - __u64 flags_padding; + __u32 perm; + __u32 flags_padding; __u64 __subtree_last; }; struct vhost_umem { struct rb_root um...

...; + if (ret != -EAGAIN) > + vq_err(vq, "Translation failure %d descriptor idx %d\n", > + ret, i); > return ret; > } > if (desc.flags & cpu_to_vhost16(vq, VRING_DESC_F_WRITE)) { > diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h > index 5d64393..4365104 100644 > --- a/drivers/vhost/vhost.h > +++ b/drivers/vhost/vhost.h > @@ -62,13 +62,15 @@ struct vhost_umem_node { > __u64 last; > __u64 size; > __u64 userspace_addr; > - __u64 flags_padding; > + __u32 perm; > + __u32 flags_padding; > __u64 __subtree_la...

...; + if (ret != -EAGAIN) > + vq_err(vq, "Translation failure %d descriptor idx %d\n", > + ret, i); > return ret; > } > if (desc.flags & cpu_to_vhost16(vq, VRING_DESC_F_WRITE)) { > diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h > index 5d64393..4365104 100644 > --- a/drivers/vhost/vhost.h > +++ b/drivers/vhost/vhost.h > @@ -62,13 +62,15 @@ struct vhost_umem_node { > __u64 last; > __u64 size; > __u64 userspace_addr; > - __u64 flags_padding; > + __u32 perm; > + __u32 flags_padding; > __u64 __subtree_la...