Allow instantiating a virtio-iommu device on ACPI systems by adding a Virtual I/O Translation table (VIOT). Enable x86 support for VIOT.
Changes since v5 [1]: * Split the series into x86 and arm parts. This patchset contains only the VIOT table (patch 1) and the x86 support. * Rebased onto master to fix a merge conflict * Added review and acks, thanks! The boot-bypass series [2] isn't a hard requirement for this series but will be needed for complete support. In the meantime, storage accessed by firmware needs to bypass the IOMMU some other way, using either a virtio-blk device without the iommu_platform property, or a bypass bridge (docs/iommu-bypass.txt). You can find a description of the VIOT table, which will be included in next ACPI version, here: https://jpbrucker.net/virtio-iommu/viot/viot-v9.pdf [1] https://lore.kernel.org/qemu-devel/20211020172745.620101-1-jean-phili...@linaro.org/ [2] https://lore.kernel.org/qemu-devel/20210930185050.262759-1-jean-phili...@linaro.org/ Jean-Philippe Brucker (7): hw/acpi: Add VIOT table hw/i386/pc: Remove x86_iommu_get_type() hw/i386/pc: Move IOMMU singleton into PCMachineState hw/i386/pc: Allow instantiating a virtio-iommu device tests/acpi: allow updates of VIOT expected data files on q35 machine tests/acpi: add test case for VIOT on q35 machine tests/acpi: add expected blobs for VIOT test on q35 machine hw/acpi/viot.h | 13 ++++ include/hw/i386/pc.h | 1 + include/hw/i386/x86-iommu.h | 12 ---- hw/acpi/viot.c | 114 +++++++++++++++++++++++++++++++++ hw/i386/acpi-build.c | 28 ++++---- hw/i386/amd_iommu.c | 2 - hw/i386/intel_iommu.c | 3 - hw/i386/pc.c | 26 +++++++- hw/i386/x86-iommu-stub.c | 5 -- hw/i386/x86-iommu.c | 31 +++------ tests/qtest/bios-tables-test.c | 21 ++++++ hw/acpi/Kconfig | 4 ++ hw/acpi/meson.build | 1 + hw/i386/Kconfig | 1 + tests/data/acpi/q35/DSDT.viot | Bin 0 -> 9398 bytes tests/data/acpi/q35/VIOT.viot | Bin 0 -> 112 bytes 16 files changed, 205 insertions(+), 57 deletions(-) create mode 100644 hw/acpi/viot.h create mode 100644 hw/acpi/viot.c create mode 100644 tests/data/acpi/q35/DSDT.viot create mode 100644 tests/data/acpi/q35/VIOT.viot -- 2.33.0
