From: Jean-Philippe Brucker <jean-philippe@linaro.org>
To: rjw@rjwysocki.net, lenb@kernel.org, joro@8bytes.org, mst@redhat.com
Cc: will@kernel.org, linux-acpi@vger.kernel.org,
iommu@lists.linux-foundation.org,
virtualization@lists.linux-foundation.org, eric.auger@redhat.com,
sebastien.boeuf@intel.com, robin.murphy@arm.com,
kevin.tian@intel.com, lorenzo.pieralisi@arm.com,
jean-philippe@linaro.org
Subject: [PATCH 0/3] Add support for ACPI VIOT
Date: Tue, 16 Mar 2021 20:16:50 +0100 [thread overview]
Message-ID: <20210316191652.3401335-1-jean-philippe@linaro.org> (raw)
Add a driver for the ACPI VIOT table, which enables virtio-iommu on
non-devicetree platforms, including x86. This series depends on the
ACPICA changes of patch 1, which will be included in next release [1]
and pulled into Linux.
The Virtual I/O Translation table (VIOT) describes the topology of
para-virtual I/O translation devices and the endpoints they manage.
It was recently approved for inclusion into the ACPI standard [2].
A provisional version of the specification can be found at [3].
After discussing non-devicetree support for virtio-iommu at length
[4][5][6] we concluded that it should use this new ACPI table. And for
platforms that don't implement either devicetree or ACPI, a structure
that uses roughly the same format [6] can be built into the device.
[1] https://github.com/acpica/acpica/pull/666
[2] https://lore.kernel.org/linux-iommu/20210218233943.GH702808@redhat.com/
[3] https://jpbrucker.net/virtio-iommu/viot/viot-v9.pdf
[4] https://lore.kernel.org/linux-iommu/20191122105000.800410-1-jean-philippe@linaro.org/
[5] https://lore.kernel.org/linux-iommu/20200228172537.377327-1-jean-philippe@linaro.org/
[6] https://lore.kernel.org/linux-iommu/20200821131540.2801801-1-jean-philippe@linaro.org/
Jean-Philippe Brucker (3):
ACPICA: iASL: Add definitions for the VIOT table
ACPI: Add driver for the VIOT table
iommu/virtio: Enable x86 support
drivers/acpi/Kconfig | 3 +
drivers/iommu/Kconfig | 4 +-
drivers/acpi/Makefile | 2 +
include/acpi/actbl3.h | 67 ++++++
include/linux/acpi_viot.h | 26 +++
drivers/acpi/bus.c | 2 +
drivers/acpi/scan.c | 6 +
drivers/acpi/viot.c | 406 +++++++++++++++++++++++++++++++++++
drivers/iommu/virtio-iommu.c | 3 +
MAINTAINERS | 8 +
10 files changed, 526 insertions(+), 1 deletion(-)
create mode 100644 include/linux/acpi_viot.h
create mode 100644 drivers/acpi/viot.c
--
2.30.2
next reply other threads:[~2021-03-16 19:19 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-16 19:16 Jean-Philippe Brucker [this message]
2021-03-16 19:16 ` [PATCH 1/3] ACPICA: iASL: Add definitions for the VIOT table Jean-Philippe Brucker
2021-03-18 17:52 ` Auger Eric
2021-04-15 14:36 ` Jean-Philippe Brucker
2021-03-16 19:16 ` [PATCH 2/3] ACPI: Add driver " Jean-Philippe Brucker
2021-03-18 19:36 ` Robin Murphy
2021-04-15 14:31 ` Jean-Philippe Brucker
2021-03-19 10:44 ` Auger Eric
2021-04-15 14:46 ` Jean-Philippe Brucker
2021-03-16 19:16 ` [PATCH 3/3] iommu/virtio: Enable x86 support Jean-Philippe Brucker
2021-03-18 10:44 ` Joerg Roedel
2021-03-18 11:43 ` Robin Murphy
2021-04-15 15:14 ` Jean-Philippe Brucker
2021-03-18 18:28 ` Michael S. Tsirkin
2021-04-15 15:15 ` Jean-Philippe Brucker
2021-03-19 10:58 ` [PATCH 0/3] Add support for ACPI VIOT Auger Eric
2021-03-19 11:16 ` Jean-Philippe Brucker
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