Dave, I've got the following MPX related information:
.... But they [Intel] certainly haven't maintained the whole MPX support in GCC at all since two or three years (e.g. bootstrap with MPX was broken since forever), so now it's gone from GCC. .... and I know that GCC is discussing MPX removal since May last year at least. To the best of my knowledge clang does not support it either. So what's the state of this stuff? If we don't have a compiler supporting it how on earth is that useful or even testable for anyone who does not have access to some magic Intel internal compiler version? If that's the sad state of affairs, then we just should move the whole stuff into staging or simply queue it for removal in 4.18. Thanks, tglx