Hi,
> -----Original Message-----
> From: Linu Cherian [mailto:linuc.dec...@gmail.com]
> Sent: Wednesday, September 27, 2017 1:11 PM
> To: Bharat Bhushan <bharat.bhus...@nxp.com>
> Cc: eric.au...@redhat.com; eric.auger....@gmail.com;
> peter.mayd...@linaro.org; alex.william...@redhat.com; m...@redhat.com;
> qemu-...@nongnu.org; qemu-devel@nongnu.org; kevin.t...@intel.com;
> marc.zyng...@arm.com; t...@semihalf.com; will.dea...@arm.com;
> drjo...@redhat.com; robin.mur...@arm.com; christoffer.d...@linaro.org;
> bharatb.ya...@gmail.com
> Subject: Re: [Qemu-arm] [PATCH v4 0/5] virtio-iommu: VFIO integration
>
> 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.
I have not seen these errors, I am also using 4K page-size on both host and
guest. Can you share compete qemu command and log.
Thanks
-Bharat
>
> 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
