Introduce Virtio-loopback epsilon release:

Epsilon release introduces a new compatibility layer which make virtio-loopback
design to work with QEMU and rust-vmm vhost-user backend without require any
changes.

Signed-off-by: Timos Ampelikiotis <t.ampelikiotis@virtualopensystems.com>
Change-Id: I52e57563e08a7d0bdc002f8e928ee61ba0c53dd9

1 files changed, 23 insertions, 0 deletions

diff --git a/hw/s390x/s390-virtio-hcall.h b/hw/s390x/s390-virtio-hcall.h
new file mode 100644
index 000000000..9800c4b35
--- /dev/null
+++ b/hw/s390x/s390-virtio-hcall.h
@@ -0,0 +1,23 @@
+/*
+ * Support for virtio hypercalls on s390x
+ *
+ * Copyright IBM Corp. 2012, 2017
+ * Author(s): Cornelia Huck <cornelia.huck@de.ibm.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or (at
+ * your option) any later version. See the COPYING file in the top-level
+ * directory.
+ */
+
+#ifndef HW_S390_VIRTIO_HCALL_H
+#define HW_S390_VIRTIO_HCALL_H
+
+#include "standard-headers/asm-s390/virtio-ccw.h"
+
+/* The only thing that we need from the old kvm_virtio.h file */
+#define KVM_S390_VIRTIO_NOTIFY 0
+
+typedef int (*s390_virtio_fn)(const uint64_t *args);
+void s390_register_virtio_hypercall(uint64_t code, s390_virtio_fn fn);
+int s390_virtio_hypercall(CPUS390XState *env);
+#endif /* HW_S390_VIRTIO_HCALL_H */