From: "Michael S. Tsirkin" <mst@redhat.com>
To: Jean-Philippe Brucker <jean-philippe.brucker@arm.com>
Cc: iommu@lists.linux-foundation.org, linux-pci@vger.kernel.org,
devicetree@vger.kernel.org,
virtualization@lists.linux-foundation.org,
virtio-dev@lists.oasis-open.org, joro@8bytes.org,
jasowang@redhat.com, robh+dt@kernel.org, mark.rutland@arm.com,
bhelgaas@google.com, frowand.list@gmail.com,
kvmarm@lists.cs.columbia.edu, eric.auger@redhat.com,
tnowicki@caviumnetworks.com, kevin.tian@intel.com,
marc.zyngier@arm.com, robin.murphy@arm.com, will.deacon@arm.com,
lorenzo.pieralisi@arm.com, bharat.bhushan@nxp.com
Subject: Re: [PATCH v7 0/7] Add virtio-iommu driver
Date: Sun, 12 May 2019 12:31:59 -0400 [thread overview]
Message-ID: <20190512123022-mutt-send-email-mst@kernel.org> (raw)
In-Reply-To: <20190115121959.23763-1-jean-philippe.brucker@arm.com>
On Tue, Jan 15, 2019 at 12:19:52PM +0000, Jean-Philippe Brucker wrote:
> Implement the virtio-iommu driver, following specification v0.9 [1].
>
> This is a simple rebase onto Linux v5.0-rc2. We now use the
> dev_iommu_fwspec_get() helper introduced in v5.0 instead of accessing
> dev->iommu_fwspec, but there aren't any functional change from v6 [2].
>
> Our current goal for virtio-iommu is to get a paravirtual IOMMU working
> on Arm, and enable device assignment to guest userspace. In this
> use-case the mappings are static, and don't require optimal performance,
> so this series tries to keep things simple. However there is plenty more
> to do for features and optimizations, and having this base in v5.1 would
> be good. Given that most of the changes are to drivers/iommu, I believe
> the driver and future changes should go via the IOMMU tree.
>
> You can find Linux driver and kvmtool device on v0.9.2 branches [3],
> module and x86 support on virtio-iommu/devel. Also tested with Eric's
> QEMU device [4]. Please note that the series depends on Robin's
> probe-deferral fix [5], which will hopefully land in v5.0.
>
> [1] Virtio-iommu specification v0.9, sources and pdf
> git://linux-arm.org/virtio-iommu.git virtio-iommu/v0.9
> http://jpbrucker.net/virtio-iommu/spec/v0.9/virtio-iommu-v0.9.pdf
>
> [2] [PATCH v6 0/7] Add virtio-iommu driver
> https://lists.linuxfoundation.org/pipermail/iommu/2018-December/032127.html
>
> [3] git://linux-arm.org/linux-jpb.git virtio-iommu/v0.9.2
> git://linux-arm.org/kvmtool-jpb.git virtio-iommu/v0.9.2
>
> [4] [RFC v9 00/17] VIRTIO-IOMMU device
> https://www.mail-archive.com/qemu-devel@nongnu.org/msg575578.html
>
> [5] [PATCH] iommu/of: Fix probe-deferral
> https://www.spinics.net/lists/arm-kernel/msg698371.html
OK this has been in next for a while.
Last time IOMMU maintainers objected. Are objections
still in force?
If not could we get acks please?
> Jean-Philippe Brucker (7):
> dt-bindings: virtio-mmio: Add IOMMU description
> dt-bindings: virtio: Add virtio-pci-iommu node
> of: Allow the iommu-map property to omit untranslated devices
> PCI: OF: Initialize dev->fwnode appropriately
> iommu: Add virtio-iommu driver
> iommu/virtio: Add probe request
> iommu/virtio: Add event queue
>
> .../devicetree/bindings/virtio/iommu.txt | 66 +
> .../devicetree/bindings/virtio/mmio.txt | 30 +
> MAINTAINERS | 7 +
> drivers/iommu/Kconfig | 11 +
> drivers/iommu/Makefile | 1 +
> drivers/iommu/virtio-iommu.c | 1158 +++++++++++++++++
> drivers/of/base.c | 10 +-
> drivers/pci/of.c | 7 +
> include/uapi/linux/virtio_ids.h | 1 +
> include/uapi/linux/virtio_iommu.h | 161 +++
> 10 files changed, 1449 insertions(+), 3 deletions(-)
> create mode 100644 Documentation/devicetree/bindings/virtio/iommu.txt
> create mode 100644 drivers/iommu/virtio-iommu.c
> create mode 100644 include/uapi/linux/virtio_iommu.h
>
> --
> 2.19.1
next prev parent reply other threads:[~2019-05-12 16:32 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-15 12:19 [PATCH v7 0/7] Add virtio-iommu driver Jean-Philippe Brucker
2019-01-15 12:19 ` [PATCH v7 1/7] dt-bindings: virtio-mmio: Add IOMMU description Jean-Philippe Brucker
2019-01-15 12:19 ` [PATCH v7 2/7] dt-bindings: virtio: Add virtio-pci-iommu node Jean-Philippe Brucker
2019-01-15 12:19 ` [PATCH v7 3/7] of: Allow the iommu-map property to omit untranslated devices Jean-Philippe Brucker
2019-01-15 12:19 ` [PATCH v7 4/7] PCI: OF: Initialize dev->fwnode appropriately Jean-Philippe Brucker
2019-01-15 12:19 ` [PATCH v7 5/7] iommu: Add virtio-iommu driver Jean-Philippe Brucker
2019-01-15 12:19 ` [PATCH v7 6/7] iommu/virtio: Add probe request Jean-Philippe Brucker
2019-01-15 12:19 ` [PATCH v7 7/7] iommu/virtio: Add event queue Jean-Philippe Brucker
2019-01-18 15:51 ` [PATCH v7 0/7] Add virtio-iommu driver Michael S. Tsirkin
2019-01-21 11:29 ` Jean-Philippe Brucker
2019-01-29 18:54 ` Michael S. Tsirkin
2019-02-21 21:57 ` Thiago Jung Bauermann
2019-01-23 8:34 ` Joerg Roedel
2019-01-24 16:03 ` Jean-Philippe Brucker
2019-02-21 22:18 ` Thiago Jung Bauermann
2019-02-22 12:18 ` Jean-Philippe Brucker
2019-02-25 13:20 ` Tomasz Nowicki
2019-05-12 16:31 ` Michael S. Tsirkin [this message]
2019-05-27 9:26 ` Joerg Roedel
2019-05-27 15:15 ` Michael S. Tsirkin
2019-05-28 9:18 ` Jean-Philippe Brucker
2019-05-12 17:15 ` Michael S. Tsirkin
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