Extend 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.

Signed-off-by: Eric Auger <eric.au...@redhat.com>
Acked-by: Christoffer Dall <christoffer.d...@linaro.org>

---
v4 -> v5:
- add Christoffer's R-b

v2 -> v3:
- add flags

v1 -> v2:
- replace msi_msg field by a struct composed of msi_msg and devid

RFC -> PATCH:
- reword the commit message after change in first patch (uapi)
---
 include/linux/kvm_host.h | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index c87fe6f..fffa299 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -317,7 +317,11 @@ struct kvm_kernel_irq_routing_entry {
                        unsigned irqchip;
                        unsigned pin;
                } irqchip;
-               struct msi_msg msi;
+               struct {
+                       struct msi_msg msi;
+                       u32 flags;
+                       u32 devid;
+               };
                struct kvm_s390_adapter_int adapter;
                struct kvm_hv_sint hv_sint;
        };
-- 
1.9.1

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