hw/xen: Implement EVTCHNOP_alloc_unbound

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>

1 files changed, 15 insertions, 0 deletions

diff --git a/target/i386/kvm/xen-emu.c b/target/i386/kvm/xen-emu.c
index 19a7f16ebe..ac04387a6a 100644
--- a/target/i386/kvm/xen-emu.c
+++ b/target/i386/kvm/xen-emu.c
@@ -921,6 +921,21 @@ static bool kvm_xen_hcall_evtchn_op(struct kvm_xen_exit *exit, X86CPU *cpu,
         err = xen_evtchn_send_op(&send);
         break;
     }
+    case EVTCHNOP_alloc_unbound: {
+        struct evtchn_alloc_unbound alloc;
+
+        qemu_build_assert(sizeof(alloc) == 8);
+        if (kvm_copy_from_gva(cs, arg, &alloc, sizeof(alloc))) {
+            err = -EFAULT;
+            break;
+        }
+
+        err = xen_evtchn_alloc_unbound_op(&alloc);
+        if (!err && kvm_copy_to_gva(cs, arg, &alloc, sizeof(alloc))) {
+            err = -EFAULT;
+        }
+        break;
+    }
     default:
         return false;
     }