Hi, AFAIK, embedded assembly code (__asm) can not be optimized by the compiler. I heard through the grapevine that you can embed a single assembly instruction, using a "__" prefix, and in this case the compiler CAN optimize. The code. Is this correct ? What's the exact syntax ? Where is this documented ? TIA -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/