From: Sean Christopherson Date: Wed, 11 Jun 2025 22:45:52 +0000 (-0700) Subject: KVM: x86: Drop superfluous "has assigned device" check in kvm_pi_update_irte() X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=04c4ca0ae47989d8f1263ffa6b77ab05d6160854;p=thirdparty%2Flinux.git KVM: x86: Drop superfluous "has assigned device" check in kvm_pi_update_irte() Don't bother checking if the VM has an assigned device when updating IRTE entries. kvm_arch_irq_bypass_add_producer() explicitly increments the assigned device count, kvm_arch_irq_bypass_del_producer() explicitly decrements the count before invoking kvm_pi_update_irte(), and kvm_irq_routing_update() only updates IRTE entries if there's an active IRQ bypass producer. Link: https://lore.kernel.org/r/20250611224604.313496-51-seanjc@google.com Signed-off-by: Sean Christopherson --- diff --git a/arch/x86/kvm/irq.c b/arch/x86/kvm/irq.c index bc9ebd893566c..b3b6cf5b828ae 100644 --- a/arch/x86/kvm/irq.c +++ b/arch/x86/kvm/irq.c @@ -517,9 +517,7 @@ static int kvm_pi_update_irte(struct kvm_kernel_irqfd *irqfd, struct kvm_lapic_irq irq; int r; - if (!irqchip_in_kernel(kvm) || - !kvm_arch_has_irq_bypass() || - !kvm_arch_has_assigned_device(kvm)) + if (!irqchip_in_kernel(kvm) || !kvm_arch_has_irq_bypass()) return 0; if (entry && entry->type == KVM_IRQ_ROUTING_MSI) {