[PATCH] Add PTRACE_{GET|SET}VRREGS

[Paul Mackerras]

Kumar Gala writes:

> Which is the same for ppc32 and ppc64, correct?

Yes.  However... 64-bit book E has a 64-bit USPRG0 register, which is
the same SPR number as VRSAVE, right?  So will 64-bit book E want to
use the VRSAVE context switch machinery for USPRG0?

As for the ptrace patch, I didn't want to include an unrelated cleanup
(that of changing the type of thread_struct.vrsave) in that patch.

Paul.