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Date: Wed, 15 Aug 2012 15:55:53 +0100
From: Will Deacon <will.deacon@arm.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Ben Hutchings <ben@decadent.org.uk>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
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        Shan Kang <kangshan0910@gmail.com>,
        Russell King <rmk+kernel@arm.linux.org.uk>
Subject: Re: [ 20/82] ARM: 7467/1: mutex: use generic xchg-based
 implementation for ARMv6+
Message-ID: <20120815145552.GI29448@mudshark.cambridge.arm.com>
References: <20120813201746.448504360@linuxfoundation.org>
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On Wed, Aug 15, 2012 at 03:49:56PM +0100, Greg Kroah-Hartman wrote:
> > Will Deacon wrote:
> > > The additional patch should also be CC'd to stable and is sitting in -tip
> > > somewhere I believe, so it shouldn't be long before it does hit mainline.
> > > 
> > > Without this patch there's a memory-ordering bug (which we seem to have hit
> > > once in > 5 years). With the patch there's a mutex lockup issue on SMP systems
> > > that I can provoke with enough hackbenching, so you may want to hold off for
> > > now.
> 
> Ah, ok, missed that.
> 
> How about I just drop this for now, and when someone (Will?) feels it is
> "good enough time to wait", they will resend it to
> stable@vger.kernel.org so that we can add it then?  Otherwise I'll just
> loose it somewhere.

Fine by me. It doesn't conflict with the other patch either, so it won't be
a problem if you get that one first.

Will