On Fri, Jan 28, 2011 at 10:59 PM, Venkatesh Srinivas <[email protected]> wrote: > Hi, > > I just saw commit cbc5d70e... , enabling MFENCE and SFENCE on SSE2 systems,
It is not enabled by default; you will have to add options CPU_HAS_SSE2 and CPU_HAS_FXSR to kernel config explicitly. "locked add" is still the default. > rather than the earlier LOCK ADD [ESP], $0 for cpu_lfence and cpu_mfence. Best Regards, sephe -- Tomorrow Will Never Die
