On Thu, 2016-13-10 at 02:17:14 UTC, Nicholas Piggin wrote: > This patch does a couple of things. First of all, powernv immediately > explodes when running a relocated kernel, because the system reset > exception for handling sleeps does not do correct relocated branches. > > Secondly, the sleep handling code trashes the condition and cfar > registers, which we would like to preserve for debugging purposes (for > non-sleep case exception). > > This patch changes the exception to use the standard format that saves > registers before any tests or branches are made. It adds the test for > idle-wakeup as an "extra" to break out of the normal exception path. > Then it branches to a relocated idle handler that calls the various > idle handling functions. > > After this patch, POWER8 CPU simulator now boots powernv kernel that is > running at non-zero. > > Cc: Balbir Singh <bsinghar...@gmail.com> > Cc: Shreyas B. Prabhu <shre...@linux.vnet.ibm.com> > Cc: Gautham R. Shenoy <e...@linux.vnet.ibm.com> > Signed-off-by: Nicholas Piggin <npig...@gmail.com> > Acked-by: Gautham R. Shenoy <e...@linux.vnet.ibm.com> > Acked-by: Balbir Singh <bsinghar...@gmail.com>
Applied to powerpc fixes, thanks. https://git.kernel.org/powerpc/c/fb479e44a9e240a23c2d208c2ace23 cheers
