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Commit 40619a2e authored by Marc Zyngier's avatar Marc Zyngier
Browse files

irqchip/gic-v3-its: Make its_send_vinvall operate on a single ITS 



Currently, its_send_vinvall operates on all ITSs. As we're about
to try and limit the amount of commands we send to ITSs that are
not involved in dealing with a given VM, let's redefine that
primitive so that it takes a target ITS as a parameter.

Signed-off-by: default avatarMarc Zyngier <marc.zyngier@arm.com>
parent ab60491e

drivers/irqchip/irq-gic-v3-its.c

+24 −10
Original line number Diff line number Diff line
@@ -983,19 +983,13 @@ static void its_send_vmovp(struct its_vpe *vpe) 
	raw_spin_unlock_irqrestore(&vmovp_lock, flags);

}



static void its_send_vinvall(struct its_vpe *vpe)

static void its_send_vinvall(struct its_node *its, struct its_vpe *vpe)

{

	struct its_cmd_desc desc;

	struct its_node *its;



	desc.its_vinvall_cmd.vpe = vpe;



	list_for_each_entry(its, &its_nodes, entry) {

		if (!its->is_v4)

			continue;

	its_send_single_vcommand(its, its_build_vinvall_cmd, &desc);

}

}



/*

 * irqchip functions - assumes MSI, mostly.
@@ -2466,6 +2460,18 @@ static void its_vpe_deschedule(struct its_vpe *vpe) 
	}

}



static void its_vpe_invall(struct its_vpe *vpe)

{

	struct its_node *its;



	list_for_each_entry(its, &its_nodes, entry) {

		if (!its->is_v4)

			continue;



		its_send_vinvall(its, vpe);

	}

}



static int its_vpe_set_vcpu_affinity(struct irq_data *d, void *vcpu_info)

{

	struct its_vpe *vpe = irq_data_get_irq_chip_data(d);
@@ -2481,7 +2487,7 @@ static int its_vpe_set_vcpu_affinity(struct irq_data *d, void *vcpu_info) 
		return 0;



	case INVALL_VPE:

		its_send_vinvall(vpe);

		its_vpe_invall(vpe);

		return 0;



	default:
@@ -2710,11 +2716,19 @@ static int its_vpe_irq_domain_activate(struct irq_domain *domain, 
				       struct irq_data *d, bool early)

{

	struct its_vpe *vpe = irq_data_get_irq_chip_data(d);

	struct its_node *its;



	/* Map the VPE to the first possible CPU */

	vpe->col_idx = cpumask_first(cpu_online_mask);

	its_send_vmapp(vpe, true);

	its_send_vinvall(vpe);



	list_for_each_entry(its, &its_nodes, entry) {

		if (!its->is_v4)

			continue;



		its_send_vinvall(its, vpe);

	}



	return 0;

}