Hi, > This patch enables POWER8 doorbell IPIs on powernv. > > Since doorbells can only IPI within a core, we test to see when we > can use doorbells and if not we fall back to XICS. This also enables > hypervisor doorbells to wakeup us up from nap/sleep via the LPCR > PECEDH bit. > > Based on tests by Anton, the best case IPI latency between two > threads dropped from 894ns to 512ns. > > Signed-off-by: Michael Neuling <mi...@neuling.org>
Thanks Mikey! Tested-by: Anton Blanchard <an...@samba.org> Anton _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
