On Fri, Sep 24, 2021 at 7:55 PM Al Viro <viro@xxxxxxxxxxxxxxxxxx> wrote:
>
> On each context switch we save the FPU registers on stack
> of old process and restore FPU registers from the stack of new one.
> That allows us to avoid doing that each time we enter/leave the
> kernel mode; however, that can get suboptimal in some cases.
Do you actually have a system or virtual image to test this all out on?
I'm not saying this doesn't look like an improvement, I'm more
questioning whether it's worth it...
Linus
