[Qemu-devel] [PATCH] vhost: fix compilation issue caused by virtio 1.0 support

[Marcel Apfelbaum <marcel@redhat.com>]

Commit 15e9ee6982a4822ce395fd597dd500a61ceafa7c (vhost: enable virtio 1.0)
uses the VIRTIO_F_VERSION_1 macro existing only in newer kernels.

Fixed it by manually defining it for older kernels.

Reported-by: Xu, Qian Q <qian.q.xu@intel.com>
Signed-off-by: Marcel Apfelbaum <marcel@redhat.com>
---

Hi,

I reproduced the issue with 3.9.5 kernel and solved using
Xie, Huawei's idea.

By the way, what is the earlier kernel that DPDK supports?
I tried 3.19 with no luck.

Please let me know if you prefer another way to do it.

Thanks,
Marcel

 lib/librte_vhost/rte_virtio_net.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/lib/librte_vhost/rte_virtio_net.h b/lib/librte_vhost/rte_virtio_net.h
index b6386f9..5687452 100644
--- a/lib/librte_vhost/rte_virtio_net.h
+++ b/lib/librte_vhost/rte_virtio_net.h
@@ -108,6 +108,13 @@ struct vhost_virtqueue {
  #define VHOST_SUPPORTS_MQ	0
 #endif
 
+/*
+ * Define virtio 1.0 for older kernels
+ */
+#ifndef VIRTIO_F_VERSION_1
+ #define VIRTIO_F_VERSION_1 32
+#endif
+
 /**
  * Device structure contains all configuration information relating to the device.
  */
-- 
2.1.0