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From: Jean-Philippe Brucker <jean-philippe@linaro.org>
To: iommu@lists.linux-foundation.org,
	virtualization@lists.linux-foundation.org,
	virtio-dev@lists.oasis-open.org, linux-pci@vger.kernel.org
Cc: Jean-Philippe Brucker <jean-philippe@linaro.org>,
	kevin.tian@intel.com, mst@redhat.com, sebastien.boeuf@intel.com,
	bhelgaas@google.com, jasowang@redhat.com
Subject: [PATCH v3 0/6] Add virtio-iommu built-in topology
Date: Fri, 21 Aug 2020 15:15:34 +0200
Message-ID: <20200821131540.2801801-1-jean-philippe@linaro.org> (raw)

Add a topology description to the virtio-iommu driver and enable x86
platforms.

Since [v2] we have made some progress on adding ACPI support for
virtio-iommu, which is the preferred boot method on x86. It will be a
new vendor-agnostic table describing para-virtual topologies in a
minimal format. However some platforms don't use either ACPI or DT for
booting (for example microvm), and will need the alternative topology
description method proposed here. In addition, since the process to get
a new ACPI table will take a long time, this provides a boot method even
to ACPI-based platforms, if only temporarily for testing and
development.

v3:
* Add patch 1 that moves virtio-iommu to a subfolder.
* Split the rest:
  * Patch 2 adds topology-helper.c, which will be shared with the ACPI
    support.
  * Patch 4 adds definitions.
  * Patch 5 adds parser in topology.c.
* Address other comments.

Linux and QEMU patches available at:
https://jpbrucker.net/git/linux virtio-iommu/devel
https://jpbrucker.net/git/qemu virtio-iommu/devel

[spec] https://lists.oasis-open.org/archives/virtio-dev/202008/msg00067.html
[v2] https://lore.kernel.org/linux-iommu/20200228172537.377327-1-jean-philippe@linaro.org/
[v1] https://lore.kernel.org/linux-iommu/20200214160413.1475396-1-jean-philippe@linaro.org/
[rfc] https://lore.kernel.org/linux-iommu/20191122105000.800410-1-jean-philippe@linaro.org/

Jean-Philippe Brucker (6):
  iommu/virtio: Move to drivers/iommu/virtio/
  iommu/virtio: Add topology helpers
  PCI: Add DMA configuration for virtual platforms
  iommu/virtio: Add topology definitions
  iommu/virtio: Support topology description in config space
  iommu/virtio: Enable x86 support

 drivers/iommu/Kconfig                     |  18 +-
 drivers/iommu/Makefile                    |   3 +-
 drivers/iommu/virtio/Makefile             |   4 +
 drivers/iommu/virtio/topology-helpers.h   |  50 +++++
 include/linux/virt_iommu.h                |  15 ++
 include/uapi/linux/virtio_iommu.h         |  44 ++++
 drivers/iommu/virtio/topology-helpers.c   | 196 ++++++++++++++++
 drivers/iommu/virtio/topology.c           | 259 ++++++++++++++++++++++
 drivers/iommu/{ => virtio}/virtio-iommu.c |   4 +
 drivers/pci/pci-driver.c                  |   5 +
 MAINTAINERS                               |   3 +-
 11 files changed, 597 insertions(+), 4 deletions(-)
 create mode 100644 drivers/iommu/virtio/Makefile
 create mode 100644 drivers/iommu/virtio/topology-helpers.h
 create mode 100644 include/linux/virt_iommu.h
 create mode 100644 drivers/iommu/virtio/topology-helpers.c
 create mode 100644 drivers/iommu/virtio/topology.c
 rename drivers/iommu/{ => virtio}/virtio-iommu.c (99%)

-- 
2.28.0

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Thread overview: 41+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-21 13:15 Jean-Philippe Brucker [this message]
2020-08-21 13:15 ` [PATCH v3 1/6] iommu/virtio: Move to drivers/iommu/virtio/ Jean-Philippe Brucker
2020-09-04 15:29   ` Auger Eric
2020-08-21 13:15 ` [PATCH v3 2/6] iommu/virtio: Add topology helpers Jean-Philippe Brucker
2020-09-04 16:22   ` Auger Eric
2020-09-24  8:31     ` Jean-Philippe Brucker
2020-08-21 13:15 ` [PATCH v3 3/6] PCI: Add DMA configuration for virtual platforms Jean-Philippe Brucker
2020-08-21 13:15 ` [PATCH v3 4/6] iommu/virtio: Add topology definitions Jean-Philippe Brucker
2020-09-04 15:30   ` Auger Eric
2020-08-21 13:15 ` [PATCH v3 5/6] iommu/virtio: Support topology description in config space Jean-Philippe Brucker
2020-09-04 16:05   ` Auger Eric
2020-09-24  8:33     ` Jean-Philippe Brucker
2020-09-24 15:22   ` Bjorn Helgaas
2020-09-25  8:12     ` Jean-Philippe Brucker
2020-09-25 15:34       ` Bjorn Helgaas
2020-08-21 13:15 ` [PATCH v3 6/6] iommu/virtio: Enable x86 support Jean-Philippe Brucker
2020-08-26 13:26 ` [PATCH v3 0/6] Add virtio-iommu built-in topology Michael S. Tsirkin
2020-08-27  8:01   ` Jean-Philippe Brucker
2020-09-04 16:24 ` Auger Eric
2020-09-24  9:00   ` Michael S. Tsirkin
2020-09-24  9:21     ` Joerg Roedel
2020-09-24  9:38       ` Michael S. Tsirkin
2020-09-24  9:54         ` Auger Eric
2020-09-29 17:28           ` Al Stone
2020-10-02 18:23           ` Al Stone
2020-10-06 15:23             ` Auger Eric
2020-11-03 20:09               ` Al Stone
2020-11-04  9:33                 ` Jean-Philippe Brucker
2020-11-04 20:56                   ` Al Stone
2020-09-24 10:02         ` Joerg Roedel
2020-09-24 10:24           ` Gerd Hoffmann
2020-09-24 10:29           ` Jean-Philippe Brucker
2020-09-24 11:50             ` Joerg Roedel
2020-09-24 12:41           ` Michael S. Tsirkin
2020-09-24 12:50             ` Joerg Roedel
2020-09-25 10:22               ` Michael S. Tsirkin
2020-09-25  8:48 ` Jean-Philippe Brucker
2020-09-25 10:22   ` Michael S. Tsirkin
2020-09-25 11:26     ` Jean-Philippe Brucker
2020-09-25 13:44       ` Michael S. Tsirkin
2020-09-25 14:14         ` [virtio-dev] " Gerd Hoffmann

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