linux-kernel - Re: [PATCH 1/1] Add virtio-input driver.

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Date:	Fri, 20 Mar 2015 11:43:46 +0100
From:	David Herrmann <dh.herrmann@...il.com>
To:	Gerd Hoffmann <kraxel@...hat.com>
Cc:	virtio-dev@...ts.oasis-open.org,
	virtualization@...ts.linux-foundation.org, mst@...hat.com,
	Rusty Russell <rusty@...tcorp.com.au>,
	open list <linux-kernel@...r.kernel.org>,
	"open list:ABI/API" <linux-api@...r.kernel.org>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>
Subject: Re: [PATCH 1/1] Add virtio-input driver.

Hi

On Fri, Mar 20, 2015 at 11:36 AM, Gerd Hoffmann <kraxel@...hat.com> wrote:
>> I'd like to see all four forwarded from the host. I'd be fine with
>> "bus" being set to VIRTUAL, but I'm not sure why that would be a good
>> thing to do?
>
> I think for the emulated devices it's fine to use VIRTUAL.

Yes, on the host side just use BUS_VIRTUAL if you don't have a real bus to set.

> For the passthrough case suspected we could confuse apps because ->phys
> points to a virtio device whereas ->type says "I'm usb".

That's not an issue. The "phys" field hasn't been standardized in any
way that I'm aware of (except on a per-driver basis, maybe).

> But at least the device database probably doesn't care much about the
> physical path I guess, because the mouse is the same no matter which usb
> port I plug it in, correct?

Correct!

Thanks
David
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