On Sat, 2010-01-16 at 18:48 -0500, Jim Keniston wrote: > As you may have noted before, I think FP would be a special problem > for your approach. I'm not sure how folks would react to the idea of > executing FP instructions in kernel space. But emulating them is also > tough. There's an IEEE FP emulation package somewhere in one of the > Linux arch directories, but I'm not sure how precise it is, and > dropping even 1 bit of precision is unacceptable for many > applications, since such errors tend to grow in complex computations > employing many FP instructions.
Well, we have kernel space using FP/MMX/SSE like things, its not hard if you really need it, but in this case I think its easier than normal, because we'll just allow it to change the userspace state because that is exactly what we want it to do.
