Hi Mark, I love your patch! Yet something to improve:
[auto build test ERROR on tip/perf/core] [also build test ERROR on v4.18-rc4 next-20180710] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Mark-Rutland/perf-core-fix-possible-spectre-v1-write/20180711-023735 config: i386-randconfig-x009-201827 (attached as .config) compiler: gcc-7 (Debian 7.3.0-16) 7.3.0 reproduce: # save the attached .config to linux build tree make ARCH=i386 All errors (new ones prefixed by >>): kernel/events/core.c: In function 'sw_perf_event_destroy': >> kernel/events/core.c:8158:13: error: implicit declaration of function >> 'array_index_nospec'; did you mean 'array_index_mask_nospec'? >> [-Werror=implicit-function-declaration] event_id = array_index_nospec(event_id, PERF_COUNT_SW_MAX); ^~~~~~~~~~~~~~~~~~ array_index_mask_nospec cc1: some warnings being treated as errors vim +8158 kernel/events/core.c 8154 8155 static void sw_perf_event_destroy(struct perf_event *event) 8156 { 8157 u64 event_id = event->attr.config; > 8158 event_id = array_index_nospec(event_id, PERF_COUNT_SW_MAX); 8159 8160 WARN_ON(event->parent); 8161 8162 static_key_slow_dec(&perf_swevent_enabled[event_id]); 8163 swevent_hlist_put(); 8164 } 8165 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
.config.gz
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