[PATCH 5/7] KVM: arm/arm64: build a default routing table
From: Eric Auger <hidden>
Date: 2015-06-29 15:39:23
Also in:
kvm, kvmarm, lkml
Subsystem:
kernel virtual machine (kvm), the rest · Maintainers:
Paolo Bonzini, Linus Torvalds
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 <redacted> --- 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)
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1.9.1