From: Marc Zyngier <marc.zyngier@arm.com>
Date: Sun, 8 Oct 2017 15:16:09 +0100
Subject: irqchip/gic-v3-its: Make its_send_vinvall operate on a single ITS
Patch-mainline: v4.15-rc1
Git-commit: 40619a2ef69d5e183717d28e8c98a59319c78a4f
References: FATE#323954
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>
Acked-by: Alexander Graf <agraf@suse.de>
---
drivers/irqchip/irq-gic-v3-its.c | 33 +++++++++++++++++++++++----------
1 file changed, 23 insertions(+), 10 deletions(-)
--- a/drivers/irqchip/irq-gic-v3-its.c
+++ b/drivers/irqchip/irq-gic-v3-its.c
@@ -987,18 +987,12 @@
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);
}
/*
@@ -2488,6 +2482,18 @@
}
}
+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);
@@ -2503,7 +2509,7 @@
return 0;
case INVALL_VPE:
- its_send_vinvall(vpe);
+ its_vpe_invall(vpe);
return 0;
default:
@@ -2732,11 +2738,18 @@
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,