On Mon, Jan 04, 2010 at 10:19:25PM +0100, Alexander Graf wrote: > The PowerPC C ABI defines that registers r14-r31 need to be preserved across > function calls. Since our exit handler is written in C, we can make use of that > and don't need to reload r14-r31 on every entry/exit cycle. > > This technique is also used in the BookE code and is called "lightweight exits" > there. To follow the tradition, it's called the same in Book3S. > > So far this optimization was disabled though, as the code didn't do what it was > expected to do, but failed to work. > > This patch fixes and enables lightweight exits again. > > Signed-off-by: Alexander Graf <agraf@xxxxxxx> Applied, thanks. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
