Comment 2 for bug 1745071

Note also that the applied patch ("KPTI: Rename to ..") affects the file "arch/x86/kernel/cpu/perf_event_intel_ds.c" which has been renamed in our tree to "arch/x86/events/intel/ds.c". Therefore the patch had to be modified slightly to change arch/x86/events/intel/ds.c instead of the originally-intended file.