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 <seanjc@google.com>

diff --git a/arch/x86/kvm/irq.c b/arch/x86/kvm/irq.c
index bc9ebd893566c53222067135e282096bdf1b8bf5..b3b6cf5b828ae009e9935aaa2b3fa5349f2285c8 100644 (file)
--- 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) {