Commit 9517aede authored by Sean Christopherson's avatar Sean Christopherson
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KVM: x86: Nullify irqfd->producer after updating IRTEs 

Nullify irqfd->producer (when it's going away) _after_ updating IRTEs so
that the producer can be queried during the update.

Link: https://lore.kernel.org/r/20250611224604.313496-29-seanjc@google.com


Signed-off-by: default avatarSean Christopherson <seanjc@google.com>
parent f5369619

arch/x86/kvm/irq.c

+1 −2
Original line number Diff line number Diff line
@@ -549,7 +549,6 @@ void kvm_arch_irq_bypass_del_producer(struct irq_bypass_consumer *cons, 
	 * KVM must relinquish control of the IRTE.

	 */

	spin_lock_irq(&kvm->irqfds.lock);

	irqfd->producer = NULL;



	if (irqfd->irq_entry.type == KVM_IRQ_ROUTING_MSI) {

		ret = kvm_x86_call(pi_update_irte)(irqfd, irqfd->kvm, prod->irq,
@@ -558,10 +557,10 @@ void kvm_arch_irq_bypass_del_producer(struct irq_bypass_consumer *cons, 
			pr_info("irq bypass consumer (eventfd %p) unregistration fails: %d\n",

				irqfd->consumer.eventfd, ret);

	}

	irqfd->producer = NULL;



	spin_unlock_irq(&kvm->irqfds.lock);





	kvm_arch_end_assignment(irqfd->kvm);

}