On Mon, Oct 06, 2008 at 09:40:39PM -0700, Keith Packard wrote: > > I really don't know how to check if a CPU is visible to the other CPU. > > The question is whether writes to memory from one CPU will be visible to > another CPU.
The short answer is eventually. The longer answer is that this heavily depends on the platform, Intel CPUs generally having high automatic coherenciy, SPARC being on the other end. Please do *not* start to write code that depends on it, the current abstraction of the OS interfaces for buses and especially the whole locking in the (kernel) DRI code is bad enough as it is. Any bugs in such code are horribly hard to find and are even more like to not be visible much on Intel (if at all). Joerg _______________________________________________ xorg mailing list xorg@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/xorg