Re: [ANNOUNCE] mdb: Merkey's Linux Kernel Debugger 2.6.27-rc4released

[Peter Zijlstra]

On Wed, 2008-08-20 at 20:50 -0600, jmerkey@xxxxxxxxxxxxxxxxxxxxx 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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