diff options
Diffstat (limited to 'qemu/include/standard-headers/linux/virtio_balloon.h')
| -rw-r--r-- | qemu/include/standard-headers/linux/virtio_balloon.h | 85 |
1 files changed, 0 insertions, 85 deletions
diff --git a/qemu/include/standard-headers/linux/virtio_balloon.h b/qemu/include/standard-headers/linux/virtio_balloon.h deleted file mode 100644 index 9d06ccd06..000000000 --- a/qemu/include/standard-headers/linux/virtio_balloon.h +++ /dev/null @@ -1,85 +0,0 @@ -#ifndef _LINUX_VIRTIO_BALLOON_H -#define _LINUX_VIRTIO_BALLOON_H -/* This header is BSD licensed so anyone can use the definitions to implement - * compatible drivers/servers. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of IBM nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL IBM OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. */ -#include "standard-headers/linux/types.h" -#include "standard-headers/linux/virtio_types.h" -#include "standard-headers/linux/virtio_ids.h" -#include "standard-headers/linux/virtio_config.h" - -/* The feature bitmap for virtio balloon */ -#define VIRTIO_BALLOON_F_MUST_TELL_HOST 0 /* Tell before reclaiming pages */ -#define VIRTIO_BALLOON_F_STATS_VQ 1 /* Memory Stats virtqueue */ -#define VIRTIO_BALLOON_F_DEFLATE_ON_OOM 2 /* Deflate balloon on OOM */ - -/* Size of a PFN in the balloon interface. */ -#define VIRTIO_BALLOON_PFN_SHIFT 12 - -struct virtio_balloon_config { - /* Number of pages host wants Guest to give up. */ - uint32_t num_pages; - /* Number of pages we've actually got in balloon. */ - uint32_t actual; -}; - -#define VIRTIO_BALLOON_S_SWAP_IN 0 /* Amount of memory swapped in */ -#define VIRTIO_BALLOON_S_SWAP_OUT 1 /* Amount of memory swapped out */ -#define VIRTIO_BALLOON_S_MAJFLT 2 /* Number of major faults */ -#define VIRTIO_BALLOON_S_MINFLT 3 /* Number of minor faults */ -#define VIRTIO_BALLOON_S_MEMFREE 4 /* Total amount of free memory */ -#define VIRTIO_BALLOON_S_MEMTOT 5 /* Total amount of memory */ -#define VIRTIO_BALLOON_S_AVAIL 6 /* Available memory as in /proc */ -#define VIRTIO_BALLOON_S_NR 7 - -/* - * Memory statistics structure. - * Driver fills an array of these structures and passes to device. - * - * NOTE: fields are laid out in a way that would make compiler add padding - * between and after fields, so we have to use compiler-specific attributes to - * pack it, to disable this padding. This also often causes compiler to - * generate suboptimal code. - * - * We maintain this statistics structure format for backwards compatibility, - * but don't follow this example. - * - * If implementing a similar structure, do something like the below instead: - * struct virtio_balloon_stat { - * __virtio16 tag; - * uint8_t reserved[6]; - * __virtio64 val; - * }; - * - * In other words, add explicit reserved fields to align field and - * structure boundaries at field size, avoiding compiler padding - * without the packed attribute. - */ -struct virtio_balloon_stat { - __virtio16 tag; - __virtio64 val; -} QEMU_PACKED; - -#endif /* _LINUX_VIRTIO_BALLOON_H */ |