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Date: Fri, 22 Apr 2016 08:53:49 +0200
From: Ingo Molnar <mingo@kernel.org>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Michal Hocko <mhocko@kernel.org>, LKML <linux-kernel@vger.kernel.org>,
        Ingo Molnar <mingo@redhat.com>, Thomas Gleixner <tglx@linutronix.de>,
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        Josh Poimboeuf <jpoimboe@redhat.com>
Subject: Re: [PATCH 10/11] x86, rwsem: provide __down_write_killable
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* Peter Zijlstra <peterz@infradead.org> wrote:

> On Wed, Apr 13, 2016 at 02:49:43PM +0200, Michal Hocko wrote:
> > On Wed 13-04-16 12:27:31, Ingo Molnar wrote:
> > > 
> > > * Ingo Molnar <mingo@kernel.org> wrote:
> > > 
> > > > I'm testing your patches today, if they are otherwise OK [...]
> > > 
> > > got this build failure:
> > > 
> > >   ./arch/x86/include/asm/rwsem.h:106:2: error: ‘asm’ operand has impossible constraints
> > 
> > Hmm, I have no idea why 64b didn't have problem with the asm but 32b
> > complains. Anyway, the following makes both happy. I have checked the
> > generated code for 64b and it hasn't changed after the patch. 32b also
> > seems to be generating a proper code. My gcc asm()-foo is rather weak so
> > I would feel better if somebody double checked after me.
> 
> I completely blow at this gcc-asm constraints thing too :/
> 
> In any case, Ingo will you look after the rest of these patches, or do
> you want me to pick up the remaining bits?

Yeah, it's on my list!

Thanks,

	Ingo