Re: [Qemu-devel] [PATCH 01/15] atomic: introduce atomic operations

[Avi Kivity]

On 08/08/2012 09:25 AM, Liu Ping Fan wrote:
> From: Liu Ping Fan <address@hidden>
> 
> 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