On Sat, 2014-10-25 at 00:04 +0200, Peter Zijlstra wrote: > On Fri, Oct 24, 2014 at 04:53:27PM -0400, Waiman Long wrote: > > The additional register pressure may just cause a few more register moves > > which should be negligible in the overall performance . The additional > > icache pressure, however, may have some impact on performance. I was trying > > to balance the performance of the pv and non-pv versions so that we won't > > penalize the pv code too much for a bit more performance in the non-pv code. > > Doing it your way will add a lot of function call and register > > saving/restoring to the pv code. > > If people care about performance they should not be using virt crap :-)
I tried some benching recently.. where did they hide the fastpaths? :) -Mike _______________________________________________ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/virtualization
