Hi Jean, I am trying to run and review on my side but I see Linux patches are not with latest kernel version. Will it be possible for you to share your Linux and kvmtool git repository reference? Thanks -Bharat > -----Original Message----- > From: virtualization-bounces@xxxxxxxxxxxxxxxxxxxxxxxxxx > [mailto:virtualization-bounces@xxxxxxxxxxxxxxxxxxxxxxxxxx] On Behalf Of Jean- > Philippe Brucker > Sent: Saturday, April 08, 2017 12:55 AM > To: iommu@xxxxxxxxxxxxxxxxxxxxxxxxxx; kvm@xxxxxxxxxxxxxxx; > virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx; virtio-dev@xxxxxxxxxxxxxxxxxxxx > Cc: cdall@xxxxxxxxxx; lorenzo.pieralisi@xxxxxxx; mst@xxxxxxxxxx; > marc.zyngier@xxxxxxx; joro@xxxxxxxxxx; will.deacon@xxxxxxx; > robin.murphy@xxxxxxx > Subject: [RFC PATCH kvmtool 00/15] Add virtio-iommu > > Implement a virtio-iommu device and translate DMA traffic from vfio and > virtio devices. Virtio needed some rework to support scatter-gather accesses > to vring and buffers at page granularity. Patch 3 implements the actual virtio- > iommu device. > > Adding --viommu on the command-line now inserts a virtual IOMMU in front > of all virtio and vfio devices: > > $ lkvm run -k Image --console virtio -p console=hvc0 \ > --viommu --vfio 0 --vfio 4 --irqchip gicv3-its > ... > [ 2.998949] virtio_iommu virtio0: probe successful > [ 3.007739] virtio_iommu virtio1: probe successful > ... > [ 3.165023] iommu: Adding device 0000:00:00.0 to group 0 > [ 3.536480] iommu: Adding device 10200.virtio to group 1 > [ 3.553643] iommu: Adding device 10600.virtio to group 2 > [ 3.570687] iommu: Adding device 10800.virtio to group 3 > [ 3.627425] iommu: Adding device 10a00.virtio to group 4 > [ 7.823689] iommu: Adding device 0000:00:01.0 to group 5 > ... > > Patches 13 and 14 add debug facilities. Some statistics are gathered for each > address space and can be queried via the debug builtin: > > $ lkvm debug -n guest-1210 --iommu stats > iommu 0 "viommu-vfio" > kicks 1255 > requests 1256 > ioas 1 > maps 7 > unmaps 4 > resident 2101248 > ioas 6 > maps 623 > unmaps 620 > resident 16384 > iommu 1 "viommu-virtio" > kicks 11426 > requests 11431 > ioas 2 > maps 2836 > unmaps 2835 > resident 8192 > accesses 2836 > ... > > This is based on the VFIO patchset[1], itself based on Andre's ITS work. > The VFIO bits have only been tested on a software model and are unlikely to > work on actual hardware, but I also tested virtio on an ARM Juno. > > [1] http://www.spinics.net/lists/kvm/msg147624.html > > Jean-Philippe Brucker (15): > virtio: synchronize virtio-iommu headers with Linux > FDT: (re)introduce a dynamic phandle allocator > virtio: add virtio-iommu > Add a simple IOMMU > iommu: describe IOMMU topology in device-trees > irq: register MSI doorbell addresses > virtio: factor virtqueue initialization > virtio: add vIOMMU instance for virtio devices > virtio: access vring and buffers through IOMMU mappings > virtio-pci: translate MSIs with the virtual IOMMU > virtio: set VIRTIO_F_IOMMU_PLATFORM when necessary > vfio: add support for virtual IOMMU > virtio-iommu: debug via IPC > virtio-iommu: implement basic debug commands > virtio: use virtio-iommu when available > > Makefile | 3 + > arm/gic.c | 4 + > arm/include/arm-common/fdt-arch.h | 2 +- > arm/pci.c | 49 ++- > builtin-debug.c | 8 +- > builtin-run.c | 2 + > fdt.c | 35 ++ > include/kvm/builtin-debug.h | 6 + > include/kvm/devices.h | 4 + > include/kvm/fdt.h | 20 + > include/kvm/iommu.h | 105 +++++ > include/kvm/irq.h | 3 + > include/kvm/kvm-config.h | 1 + > include/kvm/vfio.h | 2 + > include/kvm/virtio-iommu.h | 15 + > include/kvm/virtio-mmio.h | 1 + > include/kvm/virtio-pci.h | 2 + > include/kvm/virtio.h | 137 +++++- > include/linux/virtio_config.h | 74 ++++ > include/linux/virtio_ids.h | 4 + > include/linux/virtio_iommu.h | 142 ++++++ > iommu.c | 240 ++++++++++ > irq.c | 35 ++ > kvm-ipc.c | 43 +- > mips/include/kvm/fdt-arch.h | 2 +- > powerpc/include/kvm/fdt-arch.h | 2 +- > vfio.c | 281 +++++++++++- > virtio/9p.c | 7 +- > virtio/balloon.c | 7 +- > virtio/blk.c | 10 +- > virtio/console.c | 7 +- > virtio/core.c | 240 ++++++++-- > virtio/iommu.c | 902 > ++++++++++++++++++++++++++++++++++++++ > virtio/mmio.c | 44 +- > virtio/net.c | 8 +- > virtio/pci.c | 61 ++- > virtio/rng.c | 6 +- > virtio/scsi.c | 6 +- > x86/include/kvm/fdt-arch.h | 2 +- > 39 files changed, 2389 insertions(+), 133 deletions(-) create mode 100644 > fdt.c create mode 100644 include/kvm/iommu.h create mode 100644 > include/kvm/virtio-iommu.h create mode 100644 > include/linux/virtio_config.h create mode 100644 > include/linux/virtio_iommu.h create mode 100644 iommu.c create mode > 100644 virtio/iommu.c > > -- > 2.12.1 > > _______________________________________________ > Virtualization mailing list > Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx > https://lists.linuxfoundation.org/mailman/listinfo/virtualization
