[PATCH v8 2/5] KVM: introduce kvm_arch_intc_initialized and use it in irqfd

Introduce __KVM_HAVE_ARCH_INTC_INITIALIZED define and associated kvm_arch_intc_initialized function. This latter allows to test whether the virtual interrupt controller is initialized and ready to accept virtual IRQ injection. On some architectures, the virtual interrupt controller is dynamically

[PATCH v8 2/5] KVM: introduce kvm_arch_intc_initialized and use it in irqfd

Introduce __KVM_HAVE_ARCH_INTC_INITIALIZED define and associated kvm_arch_intc_initialized function. This latter allows to test whether the virtual interrupt controller is initialized and ready to accept virtual IRQ injection. On some architectures, the virtual interrupt controller is dynamically