On 4/28/05, Gaurav Dhiman <gaurav4lkg@xxxxxxxxx> wrote: > please let me know how these two statements are made atomic across the > CPU, i think these two need to be atomic across the CPU for actually > locking the rw lock for reading. What does "lock ;" specifices here. hi, Lock is an opcode prefix used for atomicity in i386 . so, that memory is only used by one processor at a time. AFAIK, it asserts LOCK# which locks the bus. regards Manish Regmi -- --------------------------------------------------------- "Owning a hammer doesn't make one an architect" -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
