[PATCH 4.7 127/184] perf/x86/intel/cqm: Check cqm/mbm enabled state in event init

4.7-stable review patch. If anyone has any objections, please let me know. -- From: Jiri Olsa commit 79d102cbfd2e9d94257fcc7c82807ef1cdf80322 upstream. Yanqiu Zhang reported kernel panic when using mbm event on system where CQM is detected but without mbm

[PATCH 4.7 127/184] perf/x86/intel/cqm: Check cqm/mbm enabled state in event init

4.7-stable review patch. If anyone has any objections, please let me know. -- From: Jiri Olsa commit 79d102cbfd2e9d94257fcc7c82807ef1cdf80322 upstream. Yanqiu Zhang reported kernel panic when using mbm event on system where CQM is detected but without mbm event support, like