On Mon, 2010-10-18 at 16:28 +0200, Ohad Ben-Cohen wrote: > On Mon, Oct 18, 2010 at 3:43 PM, Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote: > > Right, so the problem is that there simply is no way to do atomic memory > > access from these auxiliary processing units wrt the main CPU? > > Yes. There are a few relevant system-wide limitations, one of them is > that simply the system interconnect does not support those fancy > atomic operations. Does it support full memory coherency though? Otherwise I can see memory based message passing becoming rather interesting. Without coherency everybody needs to be damn sure to flush the relevant bits before unlocking and such. -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
