um_fxsr_from_i387
if (um_fxsr_from_i387((void *)®s->fp, fpstate_stub))
int um_fxsr_from_i387(struct _fpstate_64 *fxsave,
int um_fxsr_from_i387(struct user_fxsr_struct *fxsave,
return um_fxsr_from_i387(fxsave, from);