2016-07-18 13:25+0000, Eric Auger:
> 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 and MSI
> routing for arm too.
>
> Signed-off-by: Eric Auger <eric.auger@xxxxxxxxxx>
>
> ---
>
> v6 -> v7:
> - move vgic_v2m_inject_msi into vgic-irqfd
>
> v4 -> v5:
> - on vgic_v2m_inject_msi check the msi->data is within the SPI range
> - move KVM_HAVE_MSI in the KVM section (to be symetrical with ARM64)
>
> v2 -> v3:
> - reword the commit message
> - add sanity check about devid provision
>
> v1 -> v2:
> - introduce vgic_v2m_inject_msi in vgic-v2-emul.c following Andre's
> advice
> ---
> diff --git a/virt/kvm/arm/vgic/vgic-irqfd.c b/virt/kvm/arm/vgic/vgic-irqfd.c
> +static int vgic_v2m_inject_msi(struct kvm *kvm, struct kvm_msi *msi)
> +{
> + if (msi->flags & KVM_MSI_VALID_DEVID)
> + return -EINVAL;
> + if (!vgic_valid_spi(kvm, msi->data))
> + return -EINVAL;
> +
> + return kvm_vgic_inject_irq(kvm, 0, msi->data, 1);
Hm, this isn't very MSI related ...
arm already has KVM_IRQ_LINE/kvm_vm_ioctl_irq_line with
KVM_ARM_IRQ_TYPE_SPI that does
kvm_vgic_inject_irq(kvm, 0, irq_num, level)
Is that interface lacking?
Thanks.
> +}
> +
> +/**
> * kvm_set_msi: inject the MSI corresponding to the
> * MSI routing entry
> *
> @@ -96,7 +113,7 @@ int kvm_set_msi(struct kvm_kernel_irq_routing_entry *e,
> msi.devid = e->msi_devid;
>
> if (!vgic_has_its(kvm))
> - return -ENODEV;
> + return vgic_v2m_inject_msi(kvm, &msi);
>
> return vgic_its_inject_msi(kvm, &msi);
> }
> --
> 1.9.1
>
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