[PATCH v7 kernel 2/5] virtio-balloon: VIRTIO_BALLOON_F_CHUNK_TRANSFER
From: Wei Wang <hidden>
Date: 2017-03-03 05:40:27
Subsystem:
the rest, virtio balloon, virtio core · Maintainers:
Linus Torvalds, "Michael S. Tsirkin", David Hildenbrand, Jason Wang
Possibly related (same subject, not in this thread)
- 2017-03-09 · Re: [PATCH v7 kernel 2/5] virtio-balloon: VIRTIO_BALLOON_F_CHUNK_TRANSFER · Wei Wang <hidden>
- 2017-03-08 · Re: [PATCH v7 kernel 2/5] virtio-balloon: VIRTIO_BALLOON_F_CHUNK_TRANSFER · "Michael S. Tsirkin" <mst@redhat.com>
From: Liang Li <redacted> Add a new feature bit, VIRTIO_BALLOON_F_CHUNK_TRANSFER. Please check the implementation patch commit for details about this feature. Signed-off-by: Liang Li <redacted> Signed-off-by: Wei Wang <redacted> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Cornelia Huck <redacted> Cc: Amit Shah <redacted> Cc: Dave Hansen <redacted> Cc: Andrea Arcangeli <redacted> Cc: David Hildenbrand <redacted> Cc: Liang Li <redacted> Cc: Wei Wang <redacted> --- include/uapi/linux/virtio_balloon.h | 12 ++++++++++++ 1 file changed, 12 insertions(+)
diff --git a/include/uapi/linux/virtio_balloon.h b/include/uapi/linux/virtio_balloon.h
index 343d7dd..ed627b2 100644
--- a/include/uapi/linux/virtio_balloon.h
+++ b/include/uapi/linux/virtio_balloon.h@@ -34,10 +34,14 @@ #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 */ +#define VIRTIO_BALLOON_F_CHUNK_TRANSFER 3 /* Transfer pages in chunks */ /* Size of a PFN in the balloon interface. */ #define VIRTIO_BALLOON_PFN_SHIFT 12 +/* Shift to get a chunk size */ +#define VIRTIO_BALLOON_CHUNK_SIZE_SHIFT 12 + struct virtio_balloon_config { /* Number of pages host wants Guest to give up. */ __u32 num_pages;
@@ -82,4 +86,12 @@ struct virtio_balloon_stat { __virtio64 val; } __attribute__((packed)); +/* Response header structure */ +struct virtio_balloon_resp_hdr { + u8 cmd; + u8 flag; + __le16 id; /* cmd id */ + __le32 data_len; /* Payload len in bytes */ +}; + #endif /* _LINUX_VIRTIO_BALLOON_H */
--
2.7.4