> Of course, the normal memory barrier would usually be a "spin_unlock()" or > something like that, not a "wmb()". In fact, I don't think the powerpc > implementation (as an example of this) will actually synchronize with > anything *but* a spin_unlock().
We are even more sneaky in the sense that we set a per-cpu flag on any MMIO write and do the sync automatically in spin_unlock() :-) Ben. _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
