Andi Kleen wrote:

quoted

The code looks like it's designed to be included from userspace for
testing; as it compiles without this include (and has no other
includes), I chose not to add it.

Linus makes a good point, but someone who actually knows the code
should, y'know, test it and stuff...

It should use kernel_fpu_begin() imho. If someone wants to test
it in user space again they can add dummy definitions of that
to their user space  header.

I hadn't seen this thread until now, when Neil pointed me to the thread.

Using kernel_fpu_begin() ... kernel_fpu_end() is probably indeed the 
best option.

	-hpa