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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>
This commit is contained in:
Marc Zyngier 2017-10-08 15:16:09 +01:00
parent ab60491ee5
commit 40619a2ef6
1 changed files with 24 additions and 10 deletions
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34
drivers/irqchip/irq-gic-v3-its.c
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@ -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;
}