[PATCH 0/7] RFC Memory tagging support

[DJ Delorie]

Two immediate thoughts...

1. Do we really want to add more environment variables as aliases for
   new tunables?  I thought env support was for pre-tunable variable
   support (compatibility) only.

2. Do we really need to lose the back pointer's word in allocated
   memory?  Historically, the back pointer is *not* part of the malloc
   internal data when the chunk is in 'allocated' state, and losing that
   memory will make small allocations much less efficient.