Implement a default routing table made of flat irqchip routing
entries (gsi = irqchip.pin) covering the VGIC SPI indexes.
This routing table is overwritten by the first user-space call
to KVM_SET_GSI_ROUTING ioctl.
Signed-off-by: Eric Auger <eric.auger@xxxxxxxxxx>
---
PATCH: creation
---
virt/kvm/arm/vgic.c | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/virt/kvm/arm/vgic.c b/virt/kvm/arm/vgic.c
index 212a5ff..410fee1 100644
--- a/virt/kvm/arm/vgic.c
+++ b/virt/kvm/arm/vgic.c
@@ -1783,6 +1783,8 @@ int vgic_init(struct kvm *kvm)
ret |= vgic_init_bitmap(&dist->irq_cfg, nr_cpus, nr_irqs);
ret |= vgic_init_bytemap(&dist->irq_priority, nr_cpus, nr_irqs);
+ ret |= kvm_setup_default_irq_routing(kvm);
+
if (ret)
goto out;
@@ -2264,6 +2266,25 @@ out:
return r;
}
+int kvm_setup_default_irq_routing(struct kvm *kvm)
+{
+ struct kvm_irq_routing_entry *entries;
+ u32 nr = kvm->arch.vgic.nr_irqs - VGIC_NR_PRIVATE_IRQS;
+ int i, ret;
+
+ entries = kcalloc(nr, sizeof(struct kvm_kernel_irq_routing_entry),
+ GFP_KERNEL);
+ for (i = 0; i < nr; i++) {
+ entries[i].gsi = i;
+ entries[i].type = KVM_IRQ_ROUTING_IRQCHIP;
+ entries[i].u.irqchip.irqchip = 0;
+ entries[i].u.irqchip.pin = i;
+ }
+ ret = kvm_set_irq_routing(kvm, entries, nr, 0);
+ kfree(entries);
+ return ret;
+}
+
int kvm_set_msi(struct kvm_kernel_irq_routing_entry *e,
struct kvm *kvm, int irq_source_id,
int level, bool line_status)
--
1.9.1
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