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KVM: x86: Drop superfluous "has assigned device" check in kvm_pi_update_irte()

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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>
This commit is contained in:
Sean Christopherson 2025-06-11 15:45:52 -07:00
parent cd86240fea
commit 04c4ca0ae4
1 changed files with 1 additions and 3 deletions
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4
arch/x86/kvm/irq.c
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@ -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) {