On Mon, 2015-24-08 at 11:20:25 UTC, Kevin Hao wrote:

This function is only used by get_vtb(). They are almost the same
except the reading from the real register. Move the mfspr() to
get_vtb() and kill the function mfvtb(). With this, we can eliminate
the use of cpu_has_feature() in very core header file like reg.h.
This is a preparation for the use of jump label for cpu_has_feature().

I don't mind this change. But can you elaborate a bit on the issue with using
cpu_has_feature() in reg.h? Just so I can understand the problem.

I assume you ended up in a big mess of includes when you tried to include
jump_label.h from reg.h?

cheers