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Diffstat (limited to 'virt/kvm/irq_comm.c')
-rw-r--r--virt/kvm/irq_comm.c76
1 files changed, 3 insertions, 73 deletions
diff --git a/virt/kvm/irq_comm.c b/virt/kvm/irq_comm.c
index d5008f4aade7..e2e6b4473a96 100644
--- a/virt/kvm/irq_comm.c
+++ b/virt/kvm/irq_comm.c
@@ -271,27 +271,14 @@ void kvm_fire_mask_notifiers(struct kvm *kvm, unsigned irqchip, unsigned pin,
rcu_read_unlock();
}
-static int setup_routing_entry(struct kvm_irq_routing_table *rt,
- struct kvm_kernel_irq_routing_entry *e,
- const struct kvm_irq_routing_entry *ue)
+int kvm_set_routing_entry(struct kvm_irq_routing_table *rt,
+ struct kvm_kernel_irq_routing_entry *e,
+ const struct kvm_irq_routing_entry *ue)
{
int r = -EINVAL;
int delta;
unsigned max_pin;
- struct kvm_kernel_irq_routing_entry *ei;
- /*
- * Do not allow GSI to be mapped to the same irqchip more than once.
- * Allow only one to one mapping between GSI and MSI.
- */
- hlist_for_each_entry(ei, &rt->map[ue->gsi], link)
- if (ei->type == KVM_IRQ_ROUTING_MSI ||
- ue->type == KVM_IRQ_ROUTING_MSI ||
- ue->u.irqchip.irqchip == ei->irqchip.irqchip)
- return r;
-
- e->gsi = ue->gsi;
- e->type = ue->type;
switch (ue->type) {
case KVM_IRQ_ROUTING_IRQCHIP:
delta = 0;
@@ -328,68 +315,11 @@ static int setup_routing_entry(struct kvm_irq_routing_table *rt,
goto out;
}
- hlist_add_head(&e->link, &rt->map[e->gsi]);
r = 0;
out:
return r;
}
-int kvm_set_irq_routing(struct kvm *kvm,
- const struct kvm_irq_routing_entry *ue,
- unsigned nr,
- unsigned flags)
-{
- struct kvm_irq_routing_table *new, *old;
- u32 i, j, nr_rt_entries = 0;
- int r;
-
- for (i = 0; i < nr; ++i) {
- if (ue[i].gsi >= KVM_MAX_IRQ_ROUTES)
- return -EINVAL;
- nr_rt_entries = max(nr_rt_entries, ue[i].gsi);
- }
-
- nr_rt_entries += 1;
-
- new = kzalloc(sizeof(*new) + (nr_rt_entries * sizeof(struct hlist_head))
- + (nr * sizeof(struct kvm_kernel_irq_routing_entry)),
- GFP_KERNEL);
-
- if (!new)
- return -ENOMEM;
-
- new->rt_entries = (void *)&new->map[nr_rt_entries];
-
- new->nr_rt_entries = nr_rt_entries;
- for (i = 0; i < 3; i++)
- for (j = 0; j < KVM_IRQCHIP_NUM_PINS; j++)
- new->chip[i][j] = -1;
-
- for (i = 0; i < nr; ++i) {
- r = -EINVAL;
- if (ue->flags)
- goto out;
- r = setup_routing_entry(new, &new->rt_entries[i], ue);
- if (r)
- goto out;
- ++ue;
- }
-
- mutex_lock(&kvm->irq_lock);
- old = kvm->irq_routing;
- kvm_irq_routing_update(kvm, new);
- mutex_unlock(&kvm->irq_lock);
-
- synchronize_rcu();
-
- new = old;
- r = 0;
-
-out:
- kfree(new);
- return r;
-}
-
#define IOAPIC_ROUTING_ENTRY(irq) \
{ .gsi = irq, .type = KVM_IRQ_ROUTING_IRQCHIP, \
.u.irqchip.irqchip = KVM_IRQCHIP_IOAPIC, .u.irqchip.pin = (irq) }