This series implements the virtio-iommu device. This v5 is an upgrade to v0.5 spec [1].
Compared to v4: - event queue and fault reporting - we now return the IOAPIC MSI region if the virtio-iommu is instantiated in a PC machine. - we bypass transactions on MSI HW region and fault on reserved ones. - We support ACPI boot with mach-virt (based on IORT proposal) - We moved to the new driver naming conventions - simplified mach-virt instantiation - worked around the disappearing of pci_find_primary_bus Best Regards Eric This series can be found at: https://github.com/eauger/qemu/tree/v2.11.0-virtio-iommu-v5 References: [1] [RFC] virtio-iommu version 0.5 git://linux-arm.org/virtio-iommu.git viommu/v0.5 [2] guest branch featuring the virtio-iommu driver v0.5 git://linux-arm.org/linux-jpb.git virtio-iommu/v0.5.1 Testing: - tested with guest using virtio-pci-net and virtio-blk-pci (,vhost=off,iommu_platform,disable-modern=off,disable-legacy=on) - virtio-blk-pci uses irqfd: with GICv3, use "target/arm/kvm: Translate the MSI doorbell in kvm_arch_fixup_msi_route" available on my branch - VFIO support will be brought by a separate series - on x86 is hacked guest kernel (available on demand) History: v4 -> v5: - new functionalities reported above + below fixes: - in virtio_iommu_translate, check the dev->as is not NULL - initialize as->device_list in virtio_iommu_get_as - initialize bufstate.error to false in virtio_iommu_probe v3-> v4: - see above v2 -> v3: - rebase on top of 2.10-rc0 and especially [PATCH qemu v9 0/2] memory/iommu: QOM'fy IOMMU MemoryRegion - add mutex init - fix as->mappings deletion using g_tree_ref/unref - when a dev is attached whereas it is already attached to another address space, first detach it - fix some error values - page_sizes = TARGET_PAGE_MASK; - I haven't changed the unmap() semantics yet, waiting for the next virtio-iommu spec revision. v1 -> v2: - fix redifinition of viommu_as typedef Eric Auger (22): machine: Add a get_primary_pci_bus callback hw/arm/virt: Implement get_primary_pci_bus pc: Implement get_primary_pci_bus update-linux-headers: Import virtio_iommu.h linux-headers: Partial update for virtio-iommu virtio-iommu: Add skeleton virtio-iommu: Decode the command payload virtio-iommu: Add the iommu regions virtio-iommu: Register attached endpoints virtio-iommu: Implement attach/detach command virtio-iommu: Implement map/unmap virtio-iommu: Implement translate virtio-iommu: Implement probe request virtio-iommu: Add an msi_bypass property virtio-iommu: Implement fault reporting virtio_iommu: Handle reserved regions in translation process hw/arm/virt: Add virtio-iommu to the virt board hw/arm/virt-acpi-build: Add virtio-iommu node in IORT table memory.h: Add set_page_size_mask IOMMUMemoryRegion callback hw/vfio/common: Set the IOMMUMemoryRegion supported page sizes virtio-iommu: Implement set_page_size_mask hw/vfio/common: Do not print error when viommu translates into an mmio region hw/arm/virt-acpi-build.c | 55 +- hw/arm/virt.c | 99 ++- hw/i386/pc.c | 8 + hw/vfio/common.c | 7 +- hw/virtio/Makefile.objs | 1 + hw/virtio/trace-events | 25 + hw/virtio/virtio-iommu.c | 1063 +++++++++++++++++++++++++ include/exec/memory.h | 4 + include/hw/acpi/acpi-defs.h | 21 +- include/hw/arm/virt.h | 19 + include/hw/boards.h | 3 + include/hw/vfio/vfio-common.h | 1 + include/hw/virtio/virtio-iommu.h | 63 ++ include/standard-headers/linux/virtio_ids.h | 1 + include/standard-headers/linux/virtio_iommu.h | 195 +++++ linux-headers/linux/virtio_iommu.h | 1 + scripts/update-linux-headers.sh | 3 + 17 files changed, 1552 insertions(+), 17 deletions(-) create mode 100644 hw/virtio/virtio-iommu.c create mode 100644 include/hw/virtio/virtio-iommu.h create mode 100644 include/standard-headers/linux/virtio_iommu.h create mode 100644 linux-headers/linux/virtio_iommu.h -- 1.9.1