search for: err_rollback

...-679,6 +704,7 @@ static size_t viommu_map_sg(struct iommu_domain *domain, unsigned long iova, if (ret) { viommu_tlb_unmap(vdomain, iova, total_size); + kfree(map_reqs); return 0; } @@ -692,6 +718,7 @@ static size_t viommu_map_sg(struct iommu_domain *domain, unsigned long iova, goto err_rollback; } + kfree(map_reqs); return total_size; err_rollback: @@ -719,6 +746,7 @@ static size_t viommu_map_sg(struct iommu_domain *domain, unsigned long iova, } viommu_tlb_unmap(vdomain, iova, total_size); + kfree(map_reqs); return 0; } @@ -863,6 +891,8 @@ static int viommu_probe_device(st...

...sg_init_one(&reqs[i].tail, tail, tail_size); + + cur_iova += size; + } + + total_size = cur_iova - iova; + + if (ret) { + viommu_tlb_unmap(vdomain, iova, total_size); + return 0; + } + + ret = viommu_send_reqs_sync(vdomain->viommu, reqs, i, &nr_sent); + + if (nr_sent != nents) + goto err_rollback; + + for (i = 0; i < nents; i++) { + if (!reqs[i].written || map_reqs[i].tail.status) + goto err_rollback; + } + + return total_size; + +err_rollback: + /* + * Any request in the range might have failed. Unmap what was + * successful. + */ + cur_iova = iova; + mapped_iova = iova; + mapped...

...; > + } > + > + total_size = cur_iova - iova; > + > + if (ret) { > + viommu_tlb_unmap(vdomain, iova, total_size); > + return 0; > + } > + > + ret = viommu_send_reqs_sync(vdomain->viommu, reqs, i, > &nr_sent); > + > + if (nr_sent != nents) > + goto err_rollback; > + > + for (i = 0; i < nents; i++) { > + if (!reqs[i].written || map_reqs[i].tail.status) > + goto err_rollback; > + } > + > + return total_size; > + > +err_rollback: > + /* > + * Any request in the range might have failed. Unmap what was > + * successf...

...; > + } > + > + total_size = cur_iova - iova; > + > + if (ret) { > + viommu_tlb_unmap(vdomain, iova, total_size); > + return 0; > + } > + > + ret = viommu_send_reqs_sync(vdomain->viommu, reqs, i, > &nr_sent); > + > + if (nr_sent != nents) > + goto err_rollback; > + > + for (i = 0; i < nents; i++) { > + if (!reqs[i].written || map_reqs[i].tail.status) > + goto err_rollback; > + } > + > + return total_size; > + > +err_rollback: > + /* > + * Any request in the range might have failed. Unmap what was > + * successf...

This is the continuation of my proposal for virtio-iommu, the para- virtualized IOMMU. Here is a summary of the changes since last time [1]: * The virtio-iommu document now resembles an actual specification. It is split into a formal description of the virtio device, and implementation notes. Please find sources and binaries at [2]. * Added a probe request to describe to the guest different

This is the continuation of my proposal for virtio-iommu, the para- virtualized IOMMU. Here is a summary of the changes since last time [1]: * The virtio-iommu document now resembles an actual specification. It is split into a formal description of the virtio device, and implementation notes. Please find sources and binaries at [2]. * Added a probe request to describe to the guest different

This is the initial proposal for a paravirtualized IOMMU device using virtio transport. It contains a description of the device, a Linux driver, and a toy implementation in kvmtool. With this prototype, you can translate DMA to guest memory from emulated (virtio), or passed-through (VFIO) devices. In its simplest form, implemented here, the device handles map/unmap requests from the guest. Future

This is the initial proposal for a paravirtualized IOMMU device using virtio transport. It contains a description of the device, a Linux driver, and a toy implementation in kvmtool. With this prototype, you can translate DMA to guest memory from emulated (virtio), or passed-through (VFIO) devices. In its simplest form, implemented here, the device handles map/unmap requests from the guest. Future