Date: Fri, 11 Nov 2016 16:42:37 +0100
From: Martin Schwidefsky <schwidefsky@de.ibm.com>
To: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Mark Rutland <mark.rutland@arm.com>, catalin.marinas@arm.com,
        linux-arch@vger.kernel.org, akpm@linux-foundation.org,
        keescook@chromium.org, luto@kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCHv2 0/2] THREAD_INFO_IN_TASK prep work for arm64+s390
In-Reply-To: <20161111091622.GA4019@osiris>
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        <20161102155020.GA17547@remoulade>
        <20161110181307.GC10137@leverpostej>
        <20161111091622.GA4019@osiris>
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On Fri, 11 Nov 2016 10:16:22 +0100
Heiko Carstens <heiko.carstens@de.ibm.com> wrote:

> Hi Mark,
> 
> > On Wed, Nov 02, 2016 at 03:56:26PM +0000, Mark Rutland wrote:
> > > On Wed, Oct 26, 2016 at 06:43:05PM +0100, Mark Rutland wrote:
> > > > Heiko and I have been working on THREAD_INFO_IN_TASK for s390 and arm64
> > > > respectively, and we're both targetting v4.10.
> > > > 
> > > > These are the common core changes which we both require. I've put together a
> > > > branch [1,2] based on v4.9-rc2. I intend to tag this at some point next week so
> > > > that Heiko and I have a stable base.
> > > 
> > > As a heads-up, I've collated the tags I've received in the last few days, along
> > > with the comment Andy requested in the v1 thread, and tagged this as
> > > core-ti-stack-split [1].
> > > 
> > > Thanks,
> > > Mark.
> > > 
> > > [1] git://git.kernel.org/pub/scm/linux/kernel/git/mark/linux.git core-ti-stack-split
> > 
> > I believe that Catalin's hoping to take my arm64 patches for v4.10,
> > using the above tag as a base.
> > 
> > What's the plan for s390? Are you happy to do the same?
> 
> We intend to merge the s390 variant also for v4.10. Our approach has
> changed however: we came to the conclusion that having a per-cpu preempt
> count will generate better code on s390; so Martin implemented that.
> 
> And while being at it he also moved the rest of the s390 specific stuff out
> of our struct thread_info. The corresponding patches will be pushed to
> 
> git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux.git features
> 
> branch soon.
> 
> In result we will have a struct thread_info that only contains the flags
> field like x86 does.
> So we don't depend an any other patches anymore...

Just pushed our collected works to the features branch, in case you are
interested.

-- 
blue skies,
   Martin.

"Reality continues to ruin my life." - Calvin.