linux-kernel - Re: [PATCH RESEND 00/11] ALSA: vsnd: Add Xen para-virtualized frontend driver

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Date:   Mon, 7 Aug 2017 21:09:29 +0900
From:   Takashi Sakamoto <o-takashi@...amocchi.jp>
To:     Oleksandr Andrushchenko <andr2000@...il.com>,
        alsa-devel@...a-project.org, xen-devel@...ts.xen.org,
        linux-kernel@...r.kernel.org
Cc:     Oleksandr Andrushchenko <oleksandr_andrushchenko@...m.com>,
        tiwai@...e.com
Subject: Re: [PATCH RESEND 00/11] ALSA: vsnd: Add Xen para-virtualized
 frontend driver

Hi,

On Aug 7 2017 20:50, Oleksandr Andrushchenko wrote:
> From: Oleksandr Andrushchenko <oleksandr_andrushchenko@...m.com>
> 
> This patch series adds support for Xen [1] para-virtualized
> sound frontend driver. It implements the protocol from
> include/xen/interface/io/sndif.h with the following limitations:
> - mute/unmute is not supported
> - get/set volume is not supported
> Volume control is not supported for the reason that most of the
> use-cases (at the moment) are based on scenarious where
> unprivileged OS (e.g. Android, AGL etc) use software mixers.
> 
> Both capture and playback are supported.
> 
> Thank you,
> Oleksandr
> 
> Resending because of rebase onto [2]
> 
> [1] https://xenproject.org/
> [2] https://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git/log/?h=for-next
> 
> Oleksandr Andrushchenko (11):
>    ALSA: vsnd: Implement driver's probe/remove
>    ALSA: vsnd: Implement Xen bus state handling
>    ALSA: vsnd: Read sound driver configuration from Xen store
>    ALSA: vsnd: Implement Xen event channel handling
>    ALSA: vsnd: Implement handling of shared buffers
>    ALSA: vsnd: Introduce ALSA virtual sound driver
>    ALSA: vsnd: Initialize virtul sound card
>    ALSA: vsnd: Add timer for period interrupt emulation
>    ALSA: vsnd: Implement ALSA PCM operations
>    ALSA: vsnd: Implement communication with backend
>    ALSA: vsnd: Introduce Kconfig option to enable Xen PV sound
> 
>   sound/drivers/Kconfig     |   12 +
>   sound/drivers/Makefile    |    2 +
>   sound/drivers/xen-front.c | 2029 +++++++++++++++++++++++++++++++++++++++++++++
>   3 files changed, 2043 insertions(+)

This patchset is not proper yet.

Your first patch includes code difference under line 26, thus it expects 
existence of a file 'sound/drivers/xen-front.c' in tree. However, the 
file is not introduced in any upstream yet; at least, Linus's tree and 
Iwai-san's tree.

You still work on your local branch, not for us.


Regards

Takashi Sakamoto