I got away with just hard-coding the prctl() numbers in the MPX selftests. Include the kernel header so we can just use the symbolic names. --- b/tools/testing/selftests/x86/mpx-mini-test.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff -puN tools/testing/selftests/x86/mpx-mini-test.c~mawa-068-selftests-inc tools/testing/selftests/x86/mpx-mini-test.c --- a/tools/testing/selftests/x86/mpx-mini-test.c~mawa-068-selftests-inc 2017-02-01 15:12:18.083231385 -0800 +++ b/tools/testing/selftests/x86/mpx-mini-test.c 2017-02-01 15:12:18.087231565 -0800 @@ -40,6 +40,8 @@ int zap_all_every_this_many_mallocs = 10 #include "mpx-debug.h" #include "mpx-mm.h" +#include "../../../../include/uapi/linux/prctl.h" + #ifndef __always_inline #define __always_inline inline __attribute__((always_inline) #endif @@ -666,7 +668,7 @@ bool process_specific_init(void) check_clear(dir, size); enable_mpx(dir); check_clear(dir, size); - if (prctl(43, 0, 0, 0, 0)) { + if (prctl(PR_MPX_ENABLE_MANAGEMENT, 0, 0, 0, 0)) { printf("no MPX support\n"); abort(); return false; @@ -676,7 +678,7 @@ bool process_specific_init(void) bool process_specific_finish(void) { - if (prctl(44)) { + if (prctl(PR_MPX_DISABLE_MANAGEMENT)) { printf("no MPX support\n"); return false; } _ -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx"> email@xxxxxxxxx </a>