Commit c64115c8 authored by Oliver Upton's avatar Oliver Upton Committed by Marc Zyngier
Browse files

KVM: arm64: vgic-its: Walk LPI xarray in vgic_its_invall() 



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: default avatarOliver Upton <oliver.upton@linux.dev>
Link: https://lore.kernel.org/r/20240422200158.2606761-4-oliver.upton@linux.dev


Signed-off-by: default avatarMarc Zyngier <maz@kernel.org>
parent 720f73b7

arch/arm64/kvm/vgic/vgic-its.c

+6 −10
Original line number Diff line number Diff line
@@ -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);