HI
I have a question about Inject virq to Domain on Xen ARM.
Function 'vgic_vcpu_inject_irq' is inject virq to target vcpu.
At the end of vgic_vcpu_inject_irq, like below
--------------------------------------------------------------
running = v->is_running;
vcpu_unblock(v);
if ( running && v != current )
smp_send_event_check_mask(cpumask_of(v->processor));
--------------------------------------------------------------
In code if target vcpu is not current, send SGI to v->processor;
I think this function help inject virq to target vcpu immediately in Xen 4.5.0.
In Xen 4.5.0, vcpu that receive SGI, will execute 'enter_hypervisor_head'
function
and move irq from lr_queue to linked register.
But I think that in Xen 4.4.X above code is not help inject virq. because there
is code
to move irq from lr_queue to linked register in hyp handler routine.
Thanks
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