linux-kernel - Re: [PATCH] Input: xen-kbdfront - allow better run-time configuration

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Message-ID: <20180423185325.GB66646@dtor-ws>
Date:   Mon, 23 Apr 2018 11:53:25 -0700
From:   Dmitry Torokhov <dmitry.torokhov@...il.com>
To:     Oleksandr Andrushchenko <andr2000@...il.com>
Cc:     Juergen Gross <jgross@...e.com>, xen-devel@...ts.xenproject.org,
        linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
        lyan@...e.com, boris.ostrovsky@...cle.com,
        andrii_chepurnyi@...m.com,
        Oleksandr Andrushchenko <oleksandr_andrushchenko@...m.com>
Subject: Re: [PATCH] Input: xen-kbdfront - allow better run-time configuration

On Thu, Apr 19, 2018 at 02:44:19PM +0300, Oleksandr Andrushchenko wrote:
> On 04/19/2018 02:25 PM, Juergen Gross wrote:
> > On 18/04/18 17:04, Oleksandr Andrushchenko wrote:
> > > From: Oleksandr Andrushchenko <oleksandr_andrushchenko@...m.com>
> > > 
> > > It is now only possible to control if multi-touch virtual device
> > > is created or not (via the corresponding XenStore entries),
> > > but keyboard and pointer devices are always created.
> > Why don't you want to go that route for keyboard and mouse, too?
> > Or does this really make no sense?
> Well, I would prefer not to touch anything outside Linux and
> this driver. And these settings seem to be implementation specific.
> So, this is why introduce Linux module parameters and don't extend
> the kbdif protocol.

Why do you consider this implementation specific? How other guests
decide to forego creation of relative pointer device or keyboard-like
device?

You already have "features" for absolute pointing device and multitouch,
so please extend the protocol properly so you indeed do not code
something implementation-specific (i.e. module parameters).

Thanks.

-- 
Dmitry