4 ms·

Note the ‘shadow stacks’ CPU feature mentioned briefly in the article, though it’s more for security reasons. It’s pretty similar to what you describe.

• rwmj 3y ago
  Shadow stacks have been proposed as an alternative, although it's my understanding that in current CPUs they hold only a limited number of frames, like 16 or 32?
  • amluto 3y ago
    You may be thinking of the return stack buffer. The shadow stack holds every return address.