linux-kernel - [PATCH 4/5] virtio: Don't expose legacy config features when VIRTIO_CONFIG_NO

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Date:	Fri,  6 Feb 2015 15:36:55 +1030
From:	Rusty Russell <rusty@...tcorp.com.au>
To:	"lkml" <linux-kernel@...r.kernel.org>
Cc:	"Michael S. Tsirkin" <mst@...hat.com>
Subject: [PATCH 4/5] virtio: Don't expose legacy config features when VIRTIO_CONFIG_NO_LEGACY defined.

The VIRTIO_F_ANY_LAYOUT and VIRTIO_F_NOTIFY_ON_EMPTY features are pre-1.0
only.

Signed-off-by: Rusty Russell <rusty@...tcorp.com.au>
---
 include/uapi/linux/virtio_config.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/uapi/linux/virtio_config.h b/include/uapi/linux/virtio_config.h
index a6d0cdeaacd4..c18264df9504 100644
--- a/include/uapi/linux/virtio_config.h
+++ b/include/uapi/linux/virtio_config.h
@@ -49,12 +49,14 @@
 #define VIRTIO_TRANSPORT_F_START	28
 #define VIRTIO_TRANSPORT_F_END		33
 
+#ifndef VIRTIO_CONFIG_NO_LEGACY
 /* Do we get callbacks when the ring is completely used, even if we've
  * suppressed them? */
 #define VIRTIO_F_NOTIFY_ON_EMPTY	24
 
 /* Can the device handle any descriptor layout? */
 #define VIRTIO_F_ANY_LAYOUT		27
+#endif /* VIRTIO_CONFIG_NO_LEGACY */
 
 /* v1.0 compliant. */
 #define VIRTIO_F_VERSION_1		32
-- 
2.1.0

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