This commit adds a kernel feature to have the kernel support
for Intel Memory Protection Extensions (MPX).
A quote from kernel arch/x86/Kconfig:
"MPX provides hardware features that can be used in conjuction
with compiler-instrumented code to check memory references. It
is designed to detect buffer overflow or underflow bugs."
Intel MPX is available, e.g., on Skylake and on Goldmont (e.g.,
Intel 570x).
Signed-off-by: Mikko Ylinen <mikko.ylinen@linux.intel.com> Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
