If the ITS modality is not available, let's simply support MSI
injection by transforming the MSI.data into an SPI ID.
This becomes possible to use KVM_SIGNAL_MSI ioctl for arm too.
Signed-off-by: Eric Auger <eric.au...@linaro.org>
---
arch/arm/kvm/Kconfig | 1 +
virt/kvm/arm/vgic.c | 5 +++++
2 files changed, 6 insertions(+)
diff --git a/arch/arm/kvm/Kconfig b/arch/arm/kvm/Kconfig
index 151e710..0f58baf 100644
--- a/arch/arm/kvm/Kconfig
+++ b/arch/arm/kvm/Kconfig
@@ -31,6 +31,7 @@ config KVM
select KVM_VFIO
select HAVE_KVM_EVENTFD
select HAVE_KVM_IRQFD
+ select HAVE_KVM_MSI
select HAVE_KVM_IRQCHIP
select HAVE_KVM_IRQ_ROUTING
depends on ARM_VIRT_EXT && ARM_LPAE && ARM_ARCH_TIMER
diff --git a/virt/kvm/arm/vgic.c b/virt/kvm/arm/vgic.c
index 16d232f..40e96f9 100644
--- a/virt/kvm/arm/vgic.c
+++ b/virt/kvm/arm/vgic.c
@@ -2293,6 +2293,11 @@ int kvm_set_msi(struct kvm_kernel_irq_routing_entry *e,
return kvm->arch.vgic.vm_ops.inject_msi(kvm, &msi);
else
return -ENODEV;
+ case KVM_IRQ_ROUTING_MSI:
+ if (kvm->arch.vgic.vm_ops.inject_msi)
+ return -EINVAL;
+ else
+ return kvm_vgic_inject_irq(kvm, 0, e->msi.data, level);
default:
return -EINVAL;
}
--
1.9.1
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