> +int cr_read_cpu_fpu(struct cr_hdr_cpu *hh, struct task_struct *t)
> +{
> + struct thread_struct *thread = &t->thread;
> +
> + /* i387 + MMU + SSE */
> +
> + preempt_disable();
> +
> + __clear_fpu(t); /* in case we used FPU in user mode */
> +
> + if (!hh->used_math)
> + clear_used_math();
> + else {
> + if (hh->has_fxsr != cpu_has_fxsr) {
> + force_sig(SIGFPE, t);
> + return -EINVAL;
> + }
don't you need an init_fpu() around here ? because the task you restart might
not have used FPU yet.
> + memcpy(&thread->xstate, &hh->xstate, sizeof(thread->xstate));
also i'd used 'xstate_size' instead of sizeof(thread->xstate)
thanks,
C.
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