Hi

I am porting an RTOS on L4RE.
The RTOS run in a l4_thread and I am currently trying to handle hardware timer irq.

I would like to know if it is possible to attach an hardware irq (timer irq) to a vcpu entry ?
I try to do this in a vpcu thread:

   vcpu_state->state     = L4_VCPU_F_EXCEPTIONS | L4_VCPU_F_IRQ;
   vcpu_state->entry_ip = (l4_addr_t)&vcpu_entry;
   vcpu_state->user_task = L4_INVALID_CAP;

   InitClockDevice();

   icucap = l4re_get_env_cap("icu");
   irqcap = l4re_util_cap_alloc();
   l4_factory_create_irq(l4re_global_env->factory, irqcap);
   l4_icu_bind(icucap, 38, irqcap);
   l4_irq_attach(irqcap, 0x38, current_thread_cap);

   StartUpMain();

But this solution does not work.
The thread vcpu support works because when I use the l4_irq_trigger() function the irq are catched by the vcpu entry.
The irq attach also works because I can handle hardware interrupt using a dedicated thread:

   icucap = l4re_get_env_cap("icu");
   irqcap = l4re_util_cap_alloc();
   l4_factory_create_irq(l4re_global_env->factory, irqcap);
   l4_icu_bind(icucap, 38, irqcap);
   l4_irq_attach(irqcap, 0x38, current_thread_cap);

   while (1) {
       l4_irq_receive(irqcap, L4_IPC_NEVER);
       isr_handler();
   }

Regards,

Pierre LARUS