+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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