linux-kernel - RE: [PATCH 03/22] keembay-ipc: Add Keem Bay IPC module

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Message-ID: <MWHPR11MB16793B6D480A452273A60C5C8EF00@MWHPR11MB1679.namprd11.prod.outlook.com>
Date:   Sat, 5 Dec 2020 16:37:25 +0000
From:   "Gross, Mark" <mark.gross@...el.com>
To:     Greg KH <gregkh@...uxfoundation.org>,
        mark gross <mgross@...ux.intel.com>
CC:     "markgross@...nel.org" <markgross@...nel.org>,
        "arnd@...db.de" <arnd@...db.de>, "bp@...e.de" <bp@...e.de>,
        "damien.lemoal@....com" <damien.lemoal@....com>,
        "dragan.cvetic@...inx.com" <dragan.cvetic@...inx.com>,
        "corbet@....net" <corbet@....net>,
        "leonard.crestez@....com" <leonard.crestez@....com>,
        "palmerdabbelt@...gle.com" <palmerdabbelt@...gle.com>,
        "paul.walmsley@...ive.com" <paul.walmsley@...ive.com>,
        "peng.fan@....com" <peng.fan@....com>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "shawnguo@...nel.org" <shawnguo@...nel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "Alessandrelli, Daniele" <daniele.alessandrelli@...el.com>,
        "Iyer, Sundar" <sundar.iyer@...el.com>
Subject: RE: [PATCH 03/22] keembay-ipc: Add Keem Bay IPC module



> -----Original Message-----
> From: Greg KH <gregkh@...uxfoundation.org>
> Sent: Saturday, December 5, 2020 12:40 AM
> To: mark gross <mgross@...ux.intel.com>
> Cc: markgross@...nel.org; arnd@...db.de; bp@...e.de;
> damien.lemoal@....com; dragan.cvetic@...inx.com; corbet@....net;
> leonard.crestez@....com; palmerdabbelt@...gle.com;
> paul.walmsley@...ive.com; peng.fan@....com; robh+dt@...nel.org;
> shawnguo@...nel.org; linux-kernel@...r.kernel.org; Alessandrelli, Daniele
> <daniele.alessandrelli@...el.com>; Iyer, Sundar <sundar.iyer@...el.com>
> Subject: Re: [PATCH 03/22] keembay-ipc: Add Keem Bay IPC module
> 
> On Fri, Dec 04, 2020 at 07:35:17PM -0800, mark gross wrote:
> > On Wed, Dec 02, 2020 at 08:01:18PM +0100, Greg KH wrote:
> > > On Wed, Dec 02, 2020 at 09:42:00AM -0800, mark gross wrote:
> > > > On Wed, Dec 02, 2020 at 07:16:20AM +0100, Greg KH wrote:
> > > > > On Tue, Dec 01, 2020 at 02:34:52PM -0800, mgross@...ux.intel.com wrote:
> > > > > > --- a/MAINTAINERS
> > > > > > +++ b/MAINTAINERS
> > > > > > @@ -8955,6 +8955,14 @@ M:	Deepak Saxena <dsaxena@...xity.net>
> > > > > >  S:	Maintained
> > > > > >  F:	drivers/char/hw_random/ixp4xx-rng.c
> > > > > >
> > > > > > +INTEL KEEM BAY IPC DRIVER
> > > > > > +M:	Daniele Alessandrelli <daniele.alessandrelli@...el.com>
> > > > > > +M:	Mark Gross <mgross@...ux.intel.com>
> > > > > > +S:	Maintained
> > > > > > +F:	Documentation/devicetree/bindings/soc/intel/intel,keembay-
> ipc.yaml
> > > > > > +F:	drivers/soc/intel/keembay-ipc.c
> > > > > > +F:	include/linux/soc/intel/keembay-ipc.h
> > > > >
> > > > > Sad that Intel is not going to actually pay you all to do this
> > > > > maintenance work for a brand new subsystem you are wanting to
> > > > > add to the tree :(
> > > > I thought adding my name to these maintainer items would help with
> > > > continuity as the individual engineers tend to move on to other things over
> time.
> > > >
> > > > While I'm paid for a number of things at intel this is one of
> > > > them.  My role is as stable as I choose it to be at the point I'm
> > > > at in my Intel career and the business unit I'm now part of.  We
> > > > can leave my name off if that would be better.
> > > >
> > > > Even if I'm not a VPU IP domain expert like Daniele is I can still
> > > > chase down the experts as needed after Daniele grows into other things over
> time.
> > >
> > > I'm not objecting to your, or anyone else's name on this at all.
> > > I'm just asking about Intel's support for this new codebase being added.
> > > Having a new subsystem from a major company and not have someone
> > > paid to actually maintain it seems really odd to me.
> > >
> > > That's all.  If that's Intel's stance, that's fine, just wanted to
> > > clarify it is correct as I know some people at Intel have been
> > > confused recently about just what the S: field means.
> > I've been following up on whether the status field should be
> > "Supported" or "Maintained" at this time.  For this current
> > instantiation of the VPU enabling under review here I think Maintained
> > most appropriate.  There are a good number of people who look after it.
> >
> > However; I have learned that the instantiations of the VPU after keem
> > bay and its follow on SoC will include an evolution of this stack and
> > between now and when those get close to landing that evolved version will
> become "Supported".
> >
> > Given this, would it be more appropriate to put this stack into
> > staging for a while?
> 
> drivers/staging/ is for code that for some reason is not good enough to be merged
> to the "right" place in the kernel tree, and you need community help to get it
> cleaned up because you can not do it yourself.
> 
> Is that the case here?  If not, then no, it should not go into drivers/staging/.
That is not the case here.  Lets proceed as we are on this then.

Thanks!

--mark