Commit f70c20aa authored by Feng Wu's avatar Feng Wu Committed by Paolo Bonzini

KVM: Add an arch specific hooks in 'struct kvm_kernel_irqfd'

This patch adds an arch specific hooks 'arch_update' in
'struct kvm_kernel_irqfd'. On Intel side, it is used to
update the IRTE when VT-d posted-interrupts is used.
Signed-off-by: default avatarFeng Wu <feng.wu@intel.com>
Reviewed-by: default avatarAlex Williamson <alex.williamson@redhat.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent 9016cfb5
...@@ -1172,5 +1172,7 @@ void kvm_arch_irq_bypass_del_producer(struct irq_bypass_consumer *, ...@@ -1172,5 +1172,7 @@ void kvm_arch_irq_bypass_del_producer(struct irq_bypass_consumer *,
struct irq_bypass_producer *); struct irq_bypass_producer *);
void kvm_arch_irq_bypass_stop(struct irq_bypass_consumer *); void kvm_arch_irq_bypass_stop(struct irq_bypass_consumer *);
void kvm_arch_irq_bypass_start(struct irq_bypass_consumer *); void kvm_arch_irq_bypass_start(struct irq_bypass_consumer *);
int kvm_arch_update_irqfd_routing(struct kvm *kvm, unsigned int host_irq,
uint32_t guest_irq, bool set);
#endif /* CONFIG_HAVE_KVM_IRQ_BYPASS */ #endif /* CONFIG_HAVE_KVM_IRQ_BYPASS */
#endif #endif
...@@ -266,6 +266,13 @@ void __attribute__((weak)) kvm_arch_irq_bypass_start( ...@@ -266,6 +266,13 @@ void __attribute__((weak)) kvm_arch_irq_bypass_start(
struct irq_bypass_consumer *cons) struct irq_bypass_consumer *cons)
{ {
} }
int __attribute__((weak)) kvm_arch_update_irqfd_routing(
struct kvm *kvm, unsigned int host_irq,
uint32_t guest_irq, bool set)
{
return 0;
}
#endif #endif
static int static int
...@@ -586,9 +593,19 @@ void kvm_irq_routing_update(struct kvm *kvm) ...@@ -586,9 +593,19 @@ void kvm_irq_routing_update(struct kvm *kvm)
spin_lock_irq(&kvm->irqfds.lock); spin_lock_irq(&kvm->irqfds.lock);
list_for_each_entry(irqfd, &kvm->irqfds.items, list) list_for_each_entry(irqfd, &kvm->irqfds.items, list) {
irqfd_update(kvm, irqfd); irqfd_update(kvm, irqfd);
#ifdef CONFIG_HAVE_KVM_IRQ_BYPASS
if (irqfd->producer) {
int ret = kvm_arch_update_irqfd_routing(
irqfd->kvm, irqfd->producer->irq,
irqfd->gsi, 1);
WARN_ON(ret);
}
#endif
}
spin_unlock_irq(&kvm->irqfds.lock); spin_unlock_irq(&kvm->irqfds.lock);
} }
......
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