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To: xinhui <xinhui@linux.vnet.ibm.com>, linux-kernel@vger.kernel.org,
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From: Michael Ellerman <mpe@ellerman.id.au>
Cc: "Peter Zijlstra \(Intel\)" <peterz@infradead.org>,
 Boqun Feng <boqun.feng@gmail.com>, Paul Mackerras <paulus@samba.org>,
 Thomas Gleixner <tglx@linutronix.de>,
 "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Subject: Re: [V2] arch/powerpc: use BUILD_BUG_ON_MSG() when detect unfit
 {cmp}xchg size
Message-Id: <20160229110524.59951140662@ozlabs.org>
Date: Mon, 29 Feb 2016 22:05:24 +1100 (AEDT)
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On Tue, 2016-23-02 at 11:05:01 UTC, xinhui wrote:
> From: pan xinhui <xinhui.pan@linux.vnet.ibm.com>
> 
> __xchg_called_with_bad_pointer() can't tell us what codes use {cmp}xchg
> in incorrect way.  And no error will be reported until the link stage.
> To fix such a kind of issues easily, we use BUILD_BUG_ON_MSG() here.
> 
> Signed-off-by: pan xinhui <xinhui.pan@linux.vnet.ibm.com>

Applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/10d8b1480e6966ba03cd3afad3

cheers