Messages in this thread |  | | | Subject | Re: [ANNOUNCE] mdb: Merkey's Linux Kernel Debugger 2.6.27-rc4 released | | From | Peter Zijlstra <> | | Date | Thu, 21 Aug 2008 12:07:11 +0200 | |
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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