Re: cpu_switchto

[Joerg Sonnenberger <joerg%britannica.bec.de@localhost>]

On Wed, May 27, 2015 at 03:08:36PM +0200, deco33000%yandex.com@localhost wrote:
> If we know we didn't use the fpu, why save the state ?

As I said, supporting lazy FPU context switches itself comes with a
price. That has to be weighted with the probability if actual lazy
switching and compared against the potential time saving. For x86_64, it
is just not worth the hassle.

Joerg