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Re: [PATCH V8 1/3] libxl: Add support for generic virtio device
- To: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
- From: Anthony PERARD <anthony.perard@xxxxxxxxxx>
- Date: Mon, 12 Dec 2022 15:46:09 +0000
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- Cc: <xen-devel@xxxxxxxxxxxxx>, Juergen Gross <jgross@xxxxxxxx>, Julien Grall <julien@xxxxxxx>, Vincent Guittot <vincent.guittot@xxxxxxxxxx>, Alex Bennée <alex.bennee@xxxxxxxxxx>, Stefano Stabellini <stefano.stabellini@xxxxxxxxxx>
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On Mon, Dec 12, 2022 at 03:35:53PM +0530, 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.
>
> Signed-off-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
Reviewed-by: Anthony PERARD <anthony.perard@xxxxxxxxxx>
Thanks,
--
Anthony PERARD
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