[PATCH v3 03/19] KVM: arm64: vgic-its: Walk LPI xarray in vgic_its_invall()

[Oliver Upton <oliver.upton@linux.dev>]

The new LPI xarray makes it possible to walk the VM's LPIs without
holding a lock, meaning that vgic_copy_lpi_list() is no longer
necessary. Prepare for the deletion by walking the LPI xarray directly
in vgic_its_invall().

Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
---
 arch/arm64/kvm/vgic/vgic-its.c | 16 ++++++----------
 1 file changed, 6 insertions(+), 10 deletions(-)

diff --git a/arch/arm64/kvm/vgic/vgic-its.c b/arch/arm64/kvm/vgic/vgic-its.c
index bdb7718b923a..07706c5e996b 100644
--- a/arch/arm64/kvm/vgic/vgic-its.c
+++ b/arch/arm64/kvm/vgic/vgic-its.c
@@ -1365,23 +1365,19 @@ static int vgic_its_cmd_handle_inv(struct kvm *kvm, struct vgic_its *its,
 int vgic_its_invall(struct kvm_vcpu *vcpu)
 {
 	struct kvm *kvm = vcpu->kvm;
-	int irq_count, i = 0;
-	u32 *intids;
-
-	irq_count = vgic_copy_lpi_list(kvm, vcpu, &intids);
-	if (irq_count < 0)
-		return irq_count;
+	struct vgic_dist *dist = &kvm->arch.vgic;
+	struct vgic_irq *irq;
+	unsigned long intid;
 
-	for (i = 0; i < irq_count; i++) {
-		struct vgic_irq *irq = vgic_get_irq(kvm, NULL, intids[i]);
+	xa_for_each(&dist->lpi_xa, intid, irq) {
+		irq = vgic_get_irq(kvm, NULL, intid);
 		if (!irq)
 			continue;
+
 		update_lpi_config(kvm, irq, vcpu, false);
 		vgic_put_irq(kvm, irq);
 	}
 
-	kfree(intids);
-
 	if (vcpu->arch.vgic_cpu.vgic_v3.its_vpe.its_vm)
 		its_invall_vpe(&vcpu->arch.vgic_cpu.vgic_v3.its_vpe);
 
-- 
2.44.0.769.g3c40516874-goog