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: Marc Zyngier <marc.zyngier@arm.com>

diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c
index a63b4ee..22ee830 100644 (file)
--- a/drivers/irqchip/irq-gic-v3-its.c
+++ b/drivers/irqchip/irq-gic-v3-its.c
@@ -983,18 +983,12 @@ 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);
-       }
+       its_send_single_vcommand(its, its_build_vinvall_cmd, &desc);
 }
 
 /*
@@ -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;
 }