Suraj Jitindar Singh <sjitindarsingh@xxxxxxxxx> writes: > On Sat, 2019-07-13 at 13:47 +1000, Michael Ellerman wrote: >> Suraj Jitindar Singh <sjitindarsingh@xxxxxxxxx> writes: ... >> > >> > Fixes: 95a6432ce903 "KVM: PPC: Book3S HV: Streamlined guest >> > entry/exit path on P9 for radix guests" >> >> I'm not clear why this and the next commit are marked as fixing the >> above commit. Wasn't it broken prior to that commit as well? > > That was the commit which introduced the entry path which we use for a > nested guest, the path on which we need to be saving and restoring the > pmu registers and so where the new code was introduced. OK, I thought that commit was an unrelated optimisation. Agree that is a good target if it is the commit that introduced the nested path. cheers