linux-kernel - Re: [PATCH 0/5] Live patching for powerpc

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Message-ID: <20160415125939.lrft3nawlzuozjkb@treble>
Date:	Fri, 15 Apr 2016 07:59:39 -0500
From:	Josh Poimboeuf <jpoimboe@...hat.com>
To:	Michael Ellerman <mpe@...erman.id.au>
Cc:	Torsten Duwe <duwe@....de>, Jiri Kosina <jikos@...nel.org>,
	Miroslav Benes <mbenes@...e.cz>, linuxppc-dev@...abs.org,
	bsingharora@...il.com, linux-kernel@...r.kernel.org,
	rostedt@...dmis.org, kamalesh@...ux.vnet.ibm.com, pmladek@...e.com,
	jeyu@...hat.com, live-patching@...r.kernel.org
Subject: Re: [PATCH 0/5] Live patching for powerpc

On Fri, Apr 15, 2016 at 09:22:49PM +1000, Michael Ellerman wrote:
> On Thu, 2016-04-14 at 11:41 -0500, Josh Poimboeuf wrote:
> > On Thu, Apr 14, 2016 at 05:20:29PM +0200, Torsten Duwe wrote:
> > > On Thu, Apr 14, 2016 at 11:08:02PM +1000, Michael Ellerman wrote:
> > > > On Thu, 2016-04-14 at 14:57 +0200, Torsten Duwe wrote:
> > > > > FTR: then I still have a few ppc64 hunks floating around to support certain consistency
> > > > > models...
> > > > 
> > > > OK. I'm not quite sure what you mean but post them and we'll see I guess :)
> > > 
> > > It's *roughly* the ppc64 equivalent of Josh Poimboeuf's Mar 25
> 
> > > > [RFC PATCH v1.9 14/14] livepatch: update task universe when exiting kernel
> > > which only considers x86.
> > > 
> > > It's forward ported from an earlier code base; there's some glue missing,
> > > but here it is, for reference.
> > > 
> > > Signed-off-by: Torsten Duwe <duwe@...e.de>
> > 
> > Hi Torsten,
> > 
> > Thanks for sharing.  This is quite fortuitous as Miroslav just today
> > mentioned to me that we would need something like this.  If you don't
> > mind, I may pull this patch or some variant of it into v2 of the
> > consistency model.
>  
> Well please wait for me to review & ack it before you pull it into anything
> permanent.
> 
> At a quick glance it seems OK but I'd probably do it a little differently. I'll
> try and have a closer look next week.

Sure, no problem.  The consistency model patches are still in
development so they won't be merged anytime soon.  And we wouldn't merge
any powerpc code without maintainer acks anyway.  I'm just glad you guys
are looking at it so I don't have to butcher it ;-)

-- 
Josh