__switch_to test-and-branch ALTIVEC specific?

Segher Boessenkool segher at kernel.crashing.org
Thu Sep 15 18:21:52 EST 2005

>> This probably has to due with what happens on a G4 system with a
>> kernel not build with Altivec.. However, I dont remember exactly what
>> behavior is desired.

A kernel not build with AltiVec support will just
SIGILL any user process that tries to use it (and
MSR[VEC] = 0).

The code here can safely be #ifdef'ed out (but note
I only looked at the code, I didn't test it ;-) )


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