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[PATCH v4 00/11] virtio-iommu: Add ACPI support
From: |
Jean-Philippe Brucker |
Subject: |
[PATCH v4 00/11] virtio-iommu: Add ACPI support |
Date: |
Fri, 1 Oct 2021 18:33:48 +0100 |
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 v3 [1]:
* Cleaned the IOMMU-uniqueness checks. Added patch 6 to have a
single check on x86.
* Added patch 5 that allows to gracefully propagate errors when setting
resv_mem properties.
* Squashed table blobs into patch 11.
* Addressed all other comments from v3.
Caveats:
* Series depends on "acpi: refactor error prone build_header() and
packed structures usage in ACPI tables" [2]
* Since virtio-iommu doesn't support boot-bypass at the moment, firmware
can't access storage behind the IOMMU to load bootloader or kernel.
This will be solved by another series currently in flight [3]. In the
meantime you can use a storage device that bypasses the IOMMU such as
virtio-blk-pci (without 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/20210914142004.2433568-1-jean-philippe@linaro.org/
[2]
https://lore.kernel.org/qemu-devel/20210924122802.1455362-1-imammedo@redhat.com/
[3]
https://lore.kernel.org/qemu-devel/20210930185050.262759-1-jean-philippe@linaro.org/
Jean-Philippe Brucker (11):
hw/acpi: Add VIOT table
hw/arm/virt-acpi-build: Add VIOT table for virtio-iommu
hw/arm/virt: Remove device tree restriction for virtio-iommu
hw/arm/virt: Reject instantiation of multiple IOMMUs
hw/arm/virt: Use object_property_set instead of qdev_prop_set
hw/i386: Move vIOMMU uniqueness check into pc.c
pc: Allow instantiating a virtio-iommu device
tests/acpi: allow updates of VIOT expected data files
tests/acpi: add test cases for VIOT
tests/acpi: add expected blob for VIOT test on virt machine
tests/acpi: add expected blobs for VIOT test on q35 machine
hw/acpi/viot.h | 13 ++++
include/hw/i386/pc.h | 2 +
hw/acpi/viot.c | 112 +++++++++++++++++++++++++++++++++
hw/arm/virt-acpi-build.c | 7 +++
hw/arm/virt.c | 20 +++---
hw/i386/acpi-build.c | 5 ++
hw/i386/pc.c | 30 ++++++++-
hw/i386/x86-iommu.c | 6 --
hw/virtio/virtio-iommu-pci.c | 7 ---
tests/qtest/bios-tables-test.c | 38 +++++++++++
hw/acpi/Kconfig | 4 ++
hw/acpi/meson.build | 1 +
hw/arm/Kconfig | 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
tests/data/acpi/virt/VIOT | Bin 0 -> 88 bytes
17 files changed, 223 insertions(+), 24 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
create mode 100644 tests/data/acpi/virt/VIOT
--
2.33.0
- [PATCH v4 00/11] virtio-iommu: Add ACPI support,
Jean-Philippe Brucker <=