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>

1 files changed, 7 insertions, 1 deletions

diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 614a98137c5f..a15828fe845c 100644
--- 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;
         };