[PATCH 06/10] irqchip/gic-v3-its: Make its_send_vinvall operate on a single ITS

[Marc Zyngier]

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.zyng...@arm.com>
---
 drivers/irqchip/irq-gic-v3-its.c | 33 +++++++++++++++++++++++----------
 1 file changed, 23 insertions(+), 10 deletions(-)

diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c
index 8a1f985c8558..202f43b30bd3 100644
--- a/drivers/irqchip/irq-gic-v3-its.c
+++ b/drivers/irqchip/irq-gic-v3-its.c
@@ -977,18 +977,12 @@ 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);
 }
 
 /*
@@ -2461,6 +2455,18 @@ 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);
@@ -2476,7 +2482,7 @@ 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:
@@ -2705,11 +2711,18 @@ static void its_vpe_irq_domain_activate(struct 
irq_domain *domain,
                                        struct irq_data *d)
 {
        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);
+       }
 }
 
 static void its_vpe_irq_domain_deactivate(struct irq_domain *domain,
-- 
2.11.0