| Rusty Russell | 6b35e40 | 2008-02-04 23:50:12 -0500 | [diff] [blame] | 1 | #ifndef _LINUX_VIRTIO_BALLOON_H |
| 2 | #define _LINUX_VIRTIO_BALLOON_H |
| Rusty Russell | 674bfc2 | 2008-07-25 12:06:03 -0500 | [diff] [blame] | 3 | /* This header is BSD licensed so anyone can use the definitions to implement |
| 4 | * compatible drivers/servers. */ |
| Rusty Russell | 6b35e40 | 2008-02-04 23:50:12 -0500 | [diff] [blame] | 5 | #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 | |
| Hollis Blanchard | 1b4aa2f | 2008-11-13 15:48:33 -0600 | [diff] [blame] | 13 | /* Size of a PFN in the balloon interface. */ |
| 14 | #define VIRTIO_BALLOON_PFN_SHIFT 12 |
| 15 | |
| Rusty Russell | 6b35e40 | 2008-02-04 23:50:12 -0500 | [diff] [blame] | 16 | struct virtio_balloon_config |
| 17 | { |
| 18 | /* Number of pages host wants Guest to give up. */ |
| 19 | __le32 num_pages; |
| 20 | /* Number of pages we've actually got in balloon. */ |
| 21 | __le32 actual; |
| 22 | }; |
| 23 | #endif /* _LINUX_VIRTIO_BALLOON_H */ |