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Rusty Russell6b35e402008-02-04 23:50:12 -05001#ifndef _LINUX_VIRTIO_BALLOON_H
2#define _LINUX_VIRTIO_BALLOON_H
Rusty Russell674bfc22008-07-25 12:06:03 -05003/* This header is BSD licensed so anyone can use the definitions to implement
4 * compatible drivers/servers. */
Rusty Russell6b35e402008-02-04 23:50:12 -05005#include <linux/virtio_config.h>
6
7/* The ID for virtio_balloon */
8#define VIRTIO_ID_BALLOON 5
9
10/* The feature bitmap for virtio balloon */
11#define VIRTIO_BALLOON_F_MUST_TELL_HOST 0 /* Tell before reclaiming pages */
12
13struct virtio_balloon_config
14{
15 /* Number of pages host wants Guest to give up. */
16 __le32 num_pages;
17 /* Number of pages we've actually got in balloon. */
18 __le32 actual;
19};
20#endif /* _LINUX_VIRTIO_BALLOON_H */