Hi,
On Wed Sep 27, 2017 at 12:03:15PM +0530, Bharat Bhushan wrote:
> This patch series integrates VFIO/VHOST with virtio-iommu.
>
> This version is mainly about rebasing on v4 version on
> virtio-iommu device framework from Eric Augur and
> addresing review comments.
>
> This patch series allows PCI pass-through using virtio-iommu.
>
> This series is based on:
> - virtio-iommu kernel driver by Jean-Philippe Brucker
> [1] [RFC] virtio-iommu version 0.4
> git://linux-arm.org/virtio-iommu.git branch viommu/v0.4
>
> - virtio-iommu device emulation by Eric Augur.
> [RFC v4 00/16] VIRTIO-IOMMU device
> https://github.com/eauger/qemu/tree/v2.10.0-virtio-iommu-v4
>
> Changes are available at : https://github.com/bharaty/qemu.git
> virtio-iommu-vfio-integration-v4
>
# With the above sources, was trying to test the vfio-pci device assigned to
guest using Qemu.
# Both guest and host kernels are configured with 4k as page size.
# releavant qemu command snippet,
-device virtio-iommu-device -device virtio-blk-device,drive=hd0 \
-net none -device vfio-pci,host=xxx
On guest booting, observed mutliple messages as below,
qemu-system-aarch64: iommu has granularity incompatible with target AS
# On adding necessary prints, 0x5000 is len, 0x4fff is address mask
and the code expects the address mask to be 0xfff.
if (len & iotlb->addr_mask) {
error_report
# vfio_dma_map is failing due to this error.
Any pointers ?
> v3->v4:
> - Rebase to v4 version from Eric
> - Fixes from Eric with DPDK in VM
> - Logical division in multiple patches
>
> v2->v3:
> - This series is based on "[RFC v3 0/8] VIRTIO-IOMMU device"
> Which is based on top of v2.10-rc0 that
> - Fixed issue with two PCI devices
> - Addressed review comments
>
> v1->v2:
> - Added trace events
> - removed vSMMU3 link in patch description
>
> Bharat Bhushan (5):
> target/arm/kvm: Translate the MSI doorbell in kvm_arch_fixup_msi_route
> virtio-iommu: Add iommu notifier for map/unmap
> virtio-iommu: Call iommu notifier for attach/detach
> virtio-iommu: add iommu replay
> virtio-iommu: add iommu notifier memory-region
>
> hw/virtio/trace-events | 5 ++
> hw/virtio/virtio-iommu.c | 181
> ++++++++++++++++++++++++++++++++++++++-
> include/hw/virtio/virtio-iommu.h | 6 ++
> target/arm/kvm.c | 27 ++++++
> target/arm/trace-events | 3 +
> 5 files changed, 219 insertions(+), 3 deletions(-)
>
> --
> 1.9.3
>
>
--
Linu cherian
