On Fri, 2006-03-03 at 16:45 +0000, David Howells wrote: > David Howells <[EMAIL PROTECTED]> wrote: > > > WRITE mtx > > --> implies SFENCE > > Actually, I'm not sure this is true. The AMD64 Instruction Manual's writeup of > SFENCE implies that writes can be reordered, which sort of contradicts what > the AMD64 System Programming Manual says.
there are 2 or 3 special instructions which do "non temporal stores" (movntq and movnit and maybe one more). sfense is designed for those. - To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
