MPX is dead, and was so expensive that 100% software bounds checking was cheaper...

jcranmer · on June 13, 2020

That was my point. :-) It's not clear that hardware bounds checking acceleration is actually a meaningful win.

pjmlp · on June 14, 2020

Sure it is, Intel screw up.

Solaris SPARC, iOS and now Android 11, all make use of some kind of hardware validation in memory accesses.

my123 · on June 14, 2020

MTE today, Morello as the experiment for fully safe C tomorrow: https://developer.arm.com/architectures/cpu-architecture/a-p...

pjmlp · on June 14, 2020

Any help is welcomed. Microsoft is also having a go with Checked C.

The main problem is forcing developers to actually use them, I guess that is why Google has decided to make MTE a requirement for Android 11 on ARM devices.