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Re: [PATCH V9 1/3] libxl: Add support for generic virtio device
- To: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Tue, 13 Dec 2022 12:14:50 +0100
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- Cc: Vincent Guittot <vincent.guittot@xxxxxxxxxx>, stratos-dev@xxxxxxxxxxxxxxxxxxx, Alex Bennée <alex.bennee@xxxxxxxxxx>, Stefano Stabellini <stefano.stabellini@xxxxxxxxxx>, Mathieu Poirier <mathieu.poirier@xxxxxxxxxx>, Mike Holmes <mike.holmes@xxxxxxxxxx>, Oleksandr Tyshchenko <olekstysh@xxxxxxxxx>, Wei Liu <wl@xxxxxxx>, Oleksandr Tyshchenko <oleksandr_tyshchenko@xxxxxxxx>, xen-devel@xxxxxxxxxxxxx, Juergen Gross <jgross@xxxxxxxx>, Julien Grall <julien@xxxxxxx>, Anthony PERARD <anthony.perard@xxxxxxxxxx>
- Delivery-date: Tue, 13 Dec 2022 11:15:05 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 13.12.2022 11:08, Viresh Kumar wrote:
> This patch adds basic support for configuring and assisting generic
> Virtio backends, which could run in any domain.
>
> An example of domain configuration for mmio based Virtio I2C device is:
> virtio = ["type=virtio,device22,transport=mmio"]
>
> To make this work on Arm, allocate Virtio MMIO params (IRQ and memory
> region) and pass them to the backend and update guest device-tree to
> create a DT node for the Virtio devices.
>
> Add special support for I2C and GPIO devices, which require the
> "compatible" DT property to be set, among other device specific
> properties. Support for generic virtio devices is also added, which just
> need a MMIO node but not any special DT properties, for such devices the
> user needs to pass "virtio,device" in the "type" string.
>
> The parsing of generic virtio device configurations will be done in a
> separate commit.
>
> Reviewed-by: Anthony PERARD <anthony.perard@xxxxxxxxxx>
> Reviewed-by: Oleksandr Tyshchenko <oleksandr_tyshchenko@xxxxxxxx>
> Signed-off-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
Please can you arrange tags in time order, which would mean R-b past any
S-o-b? I'll try to remember to swap them while committing, but in the
future please save committers from needing to do so.
Jan
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