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SubjectRe: [ANNOUNCE] mdb: Merkey's Linux Kernel Debugger 2.6.27-rc4 released
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On Wed, 2008-08-20 at 20:50 -0600, jmerkey@wolfmountaingroup.com wrote:

> volatiles left in the code due to the previously stated
> (and still present) severe breakage of the GNU compiler with SMP
> shared data. most of the barrier() functions are just plain broken
> and do not result in proper compiler behavior in this tree.

Can you provide explicit detail?

By using barrier() the compiler should clobber all its memory and
registers therefore forcing a write/reload of the variable.





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