KVM: Add devid in kvm_kernel_irq_routing_entry

Enhance kvm_kernel_irq_routing_entry to transport the device id
field, devid. A new flags field makes possible to indicate the
devid is valid. Those additions are used for ARM GICv3 ITS MSI
injection. The original struct msi_msg msi field is replaced by
a new custom structure that embeds the new fields.

Signed-off-by: Eric Auger <eric.auger@redhat.com>
Suggested-by: Radim Krčmář <rkrcmar@redhat.com>
Acked-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>

diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 614a981..a15828f 100644 (file)
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -317,7 +317,13 @@ struct kvm_kernel_irq_routing_entry {
                        unsigned irqchip;
                        unsigned pin;
                } irqchip;
-               struct msi_msg msi;
+               struct {
+                       u32 address_lo;
+                       u32 address_hi;
+                       u32 data;
+                       u32 flags;
+                       u32 devid;
+               } msi;
                struct kvm_s390_adapter_int adapter;
                struct kvm_hv_sint hv_sint;
        };