Hi Michael, On 12/11/19 9:40 PM, Michael S. Tsirkin wrote: > On Wed, Dec 11, 2019 at 05:48:05PM +0100, Auger Eric wrote: >> Hi Michael, >> >> On 12/11/19 5:40 PM, Michael S. Tsirkin wrote: >>> On Fri, Nov 22, 2019 at 07:29:23PM +0100, Eric Auger wrote: >>>> This series implements the QEMU virtio-iommu device. >>>> >>>> This matches the v0.12 spec and the corresponding virtio-iommu >>>> driver upstreamed in 5.3. >>>> >>>> The pci proxy for the virtio-iommu device is instantiated using >>>> "-device virtio-iommu-pci". This series still relies on ACPI IORT/DT >>>> integration. Note the ACPI IORT integration is not yet upstreamed >>>> and testing needs to be based on Jean-Philippe's additional >>>> kernel patches [1]. >>> >>> Or the config space approach? I really liked that one. >> Yes this corresponds to the paragraph below. >>> >>>> >>>> Work is ongoing to remove IORT adherence and allow the >>>> bindings between the IOMMU and the root complex to be defined >>>> and written into the PCI device configuration space. The outcome >>>> of this work is uncertain at this stage though. See [2]. > > Oh right. Why is it uncertain? Anything can be done to help?
Jean's series was sent on the same day as this QEMU respin. My understanding is we still need a way to handle platform devices. Also the binding info layout needs to be revised and integrated into the spec + voted. Those are the uncertainties I wanted to point out. Thanks Eric > >> Thanks >> >> Eric >> >>>> >>>> So only patches 1-11 fully rely on upstreamed kernel code. Others >>>> should be considered as RFC. >>>> >>>> This respin allows people to test on ARM and x86. It also >>>> brings migration support (tested on ARM) and various cleanups. >>>> Reserved regions are now passed through an array of properties. >>>> A libqos test also is introduced to test the virtio-iommu API. >>>> >>>> Note integration with vhost devices and vfio devices is not part >>>> of this series. Please follow Bharat's respins [3]. >>>> >>>> The 1st Patch ("migration: Support QLIST migration") was sent >>>> separately [4]. >>>> >>>> Best Regards >>>> >>>> Eric >>>> >>>> This series can be found at: >>>> https://github.com/eauger/qemu/tree/v4.2-rc2-virtio-iommu-v11 >>>> >>>> [1] kernel branch to be used for guest >>>> https://github.com/eauger/linux/tree/v5.4-rc8-virtio-iommu-iort >>>> [2] [RFC 00/13] virtio-iommu on non-devicetree platforms >>>> [3] VFIO/VHOST integration is not part of this series. Please follow >>>> [PATCH RFC v5 0/5] virtio-iommu: VFIO integration respins >>>> [4] [PATCH v6] migration: Support QLIST migration >>>> >>>> Testing: >>>> - tested with guest using virtio-net-pci >>>> (,vhost=off,iommu_platform,disable-modern=off,disable-legacy=on) >>>> and virtio-blk-pci >>>> - migration on ARM >>>> - on x86 PC machine I get some AHCI non translated transactions, >>>> very early. This does not prevent the guest from boot and behaving >>>> properly. Warnings look like: >>>> qemu-system-x86_64: virtio_iommu_translate sid=250 is not known!! >>>> qemu-system-x86_64: no buffer available in event queue to report event >>>> qemu-system-x86_64: AHCI: Failed to start FIS receive engine: bad FIS >>>> receive buffer address >>>> >>>> History: >>>> >>>> v10 -> v11: >>>> - introduce virtio_iommu_handle_req macro >>>> - migration support >>>> - introduce DEFINE_PROP_INTERVAL and pass reserved regions >>>> through an array of those >>>> - domain gtree simplification >>>> >>>> v9 -> v10: >>>> - rebase on 4.1.0-rc2, compliance with 0.12 spec >>>> - removed ACPI part >>>> - cleanup (see individual change logs) >>>> - moved to a PATCH series >>>> >>>> v8 -> v9: >>>> - virtio-iommu-pci device needs to be instantiated from the command >>>> line (RID is not imposed anymore). >>>> - tail structure properly initialized >>>> >>>> v7 -> v8: >>>> - virtio-iommu-pci added >>>> - virt instantiation modified >>>> - DT and ACPI modified to exclude the iommu RID from the mapping >>>> - VIRTIO_IOMMU_F_BYPASS, VIRTIO_F_VERSION_1 features exposed >>>> >>>> v6 -> v7: >>>> - rebase on qemu 3.0.0-rc3 >>>> - minor update against v0.7 >>>> - fix issue with EP not on pci.0 and ACPI probing >>>> - change the instantiation method >>>> >>>> v5 -> v6: >>>> - minor update against v0.6 spec >>>> - fix g_hash_table_lookup in virtio_iommu_find_add_as >>>> - replace some error_reports by qemu_log_mask(LOG_GUEST_ERROR, ...) >>>> >>>> v4 -> v5: >>>> - 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 >>>> - 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: >>>> - probe request support although no reserved region is returned at >>>> the moment >>>> - unmap semantics less strict, as specified in v0.4 >>>> - device registration, attach/detach revisited >>>> - split into smaller patches to ease review >>>> - propose a way to inform the IOMMU mr about the page_size_mask >>>> of underlying HW IOMMU, if any >>>> - remove warning associated with the translation of the MSI doorbell >>>> >>>> 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 redefinition of viommu_as typedef >>>> >>>> >>>> >>>> Eric Auger (20): >>>> migration: Support QLIST migration >>>> virtio-iommu: Add skeleton >>>> virtio-iommu: Decode the command payload >>>> virtio-iommu: Add the iommu regions >>>> virtio-iommu: Endpoint and domains structs and helpers >>>> virtio-iommu: Implement attach/detach command >>>> virtio-iommu: Implement map/unmap >>>> virtio-iommu: Implement translate >>>> virtio-iommu: Implement fault reporting >>>> virtio-iommu-pci: Add virtio iommu pci support >>>> hw/arm/virt: Add the virtio-iommu device tree mappings >>>> qapi: Introduce DEFINE_PROP_INTERVAL >>>> virtio-iommu: Implement probe request >>>> virtio-iommu: Handle reserved regions in the translation process >>>> virtio-iommu-pci: Add array of Interval properties >>>> hw/arm/virt-acpi-build: Introduce fill_iort_idmap helper >>>> hw/arm/virt-acpi-build: Add virtio-iommu node in IORT table >>>> virtio-iommu: Support migration >>>> pc: Add support for virtio-iommu-pci >>>> tests: Add virtio-iommu test >>>> >>>> hw/arm/virt-acpi-build.c | 91 ++- >>>> hw/arm/virt.c | 53 +- >>>> hw/core/qdev-properties.c | 90 +++ >>>> hw/i386/acpi-build.c | 72 +++ >>>> hw/i386/pc.c | 15 +- >>>> hw/virtio/Kconfig | 5 + >>>> hw/virtio/Makefile.objs | 2 + >>>> hw/virtio/trace-events | 22 + >>>> hw/virtio/virtio-iommu-pci.c | 91 +++ >>>> hw/virtio/virtio-iommu.c | 952 +++++++++++++++++++++++++++++++ >>>> include/exec/memory.h | 6 + >>>> include/hw/acpi/acpi-defs.h | 21 +- >>>> include/hw/arm/virt.h | 2 + >>>> include/hw/i386/pc.h | 2 + >>>> include/hw/pci/pci.h | 1 + >>>> include/hw/qdev-properties.h | 3 + >>>> include/hw/virtio/virtio-iommu.h | 67 +++ >>>> include/migration/vmstate.h | 21 + >>>> include/qemu/queue.h | 39 ++ >>>> include/qemu/typedefs.h | 1 + >>>> migration/trace-events | 5 + >>>> migration/vmstate-types.c | 70 +++ >>>> qdev-monitor.c | 1 + >>>> tests/Makefile.include | 2 + >>>> tests/libqos/virtio-iommu.c | 177 ++++++ >>>> tests/libqos/virtio-iommu.h | 45 ++ >>>> tests/test-vmstate.c | 170 ++++++ >>>> tests/virtio-iommu-test.c | 261 +++++++++ >>>> 28 files changed, 2253 insertions(+), 34 deletions(-) >>>> create mode 100644 hw/virtio/virtio-iommu-pci.c >>>> create mode 100644 hw/virtio/virtio-iommu.c >>>> create mode 100644 include/hw/virtio/virtio-iommu.h >>>> create mode 100644 tests/libqos/virtio-iommu.c >>>> create mode 100644 tests/libqos/virtio-iommu.h >>>> create mode 100644 tests/virtio-iommu-test.c >>>> >>>> -- >>>> 2.20.1 >>> >>> > >