On Sun, Jan 17, 2021 at 10:20:38PM -0800, Andy Lutomirski wrote: > - Code that wants MMX doesn't want need MXCSR or FCW initialized. > _mmx_memcpy(), for example, can run before CR4.OSFXSR gets set, and > initializing MXCSR will fail.
> +#define KFPU_MMX 0 /* nothing gets initialized */ This... why is that correct?
