include/linux/virtio_balloon.h

   1 #ifndef _LINUX_VIRTIO_BALLOON_H
   2 #define _LINUX_VIRTIO_BALLOON_H
   3 /* This header is BSD licensed so anyone can use the definitions to implement
   4  * compatible drivers/servers. */
   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
  13 /* Size of a PFN in the balloon interface. */
  14 #define VIRTIO_BALLOON_PFN_SHIFT 12
  15
  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 */