Re: [patch 2/2] x86 amd fix cmpxchg read acquire barrier

[Pavel Machek]

On Wed 2009-04-22 16:18:54, Mathieu Desnoyers wrote:
> http://google-perftools.googlecode.com/svn-history/r48/trunk/src/base/atomicops-internals-x86.cc
> 
> says
> 
> "  // Opteron Rev E has a bug in which on very rare occasions a locked
>   // instruction doesn't act as a read-acquire barrier if followed by a
>   // non-locked read-modify-write instruction.  Rev F has this bug in 
>   // pre-release versions, but not in versions released to customers,
>   // so we test only for Rev E, which is family 15, model 32..63 inclusive.

Could we be more careful  here and catch the F pre-release versions,
too? Stepping should help there...

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