From mboxrd@z Thu Jan  1 00:00:00 1970
From: Avi Kivity <avi@redhat.com>
Subject: Re: [PATCH 01/15] atomic: introduce atomic operations
Date: Wed, 08 Aug 2012 12:02:29 +0300
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Cc: qemu-devel@nongnu.org, kvm@vger.kernel.org,
	Anthony Liguori <anthony@codemonkey.ws>,
	Jan Kiszka <jan.kiszka@siemens.com>,
	Marcelo Tosatti <mtosatti@redhat.com>,
	Stefan Hajnoczi <stefanha@gmail.com>,
	Paolo Bonzini <pbonzini@redhat.com>,
	Blue Swirl <blauwirbel@gmail.com>,
	=?ISO-8859-1?Q?Andreas_F=E4rber?= <afaerber@suse.de>
To: Liu Ping Fan <qemulist@gmail.com>
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On 08/08/2012 09:25 AM, Liu Ping Fan wrote:
> From: Liu Ping Fan <pingfank@linux.vnet.ibm.com>
> 
> If out of global lock, we will be challenged by SMP in low level,
> so need atomic ops.
> 
> This file is heavily copied from kernel. Currently, only x86 atomic ops
> included, and will be extended for other arch for future.
> 

I propose we use gcc builtins.  We get automatic architecture support,
and tuning for newer processors if the user so chooses.

http://gcc.gnu.org/onlinedocs/gcc-4.1.2/gcc/Atomic-Builtins.html

In May 2031 we can switch to C11 atomics.

-- 
error compiling committee.c: too many arguments to function