From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pf0-f198.google.com (mail-pf0-f198.google.com [209.85.192.198]) by kanga.kvack.org (Postfix) with ESMTP id CF6216B0391 for ; Fri, 3 Mar 2017 00:44:20 -0500 (EST) Received: by mail-pf0-f198.google.com with SMTP id w189so68927434pfb.4 for ; Thu, 02 Mar 2017 21:44:20 -0800 (PST) Received: from mga11.intel.com (mga11.intel.com. [192.55.52.93]) by mx.google.com with ESMTPS id b35si9546908plh.95.2017.03.02.21.44.19 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 02 Mar 2017 21:44:20 -0800 (PST) From: Wei Wang Subject: [PATCH v7 kernel 2/5] virtio-balloon: VIRTIO_BALLOON_F_CHUNK_TRANSFER Date: Fri, 3 Mar 2017 13:40:27 +0800 Message-Id: <1488519630-89058-3-git-send-email-wei.w.wang@intel.com> In-Reply-To: <1488519630-89058-1-git-send-email-wei.w.wang@intel.com> References: <1488519630-89058-1-git-send-email-wei.w.wang@intel.com> Sender: owner-linux-mm@kvack.org List-ID: To: virtio-dev@lists.oasis-open.org, kvm@vger.kernel.org, qemu-devel@nongnu.org, linux-kernel@vger.kernel.org, virtualization@lists.linux-foundation.org, linux-mm@kvack.org Cc: Liang Li , Wei Wang , "Michael S . Tsirkin" , Paolo Bonzini , Cornelia Huck , Amit Shah , Dave Hansen , Andrea Arcangeli , David Hildenbrand , Liang Li From: Liang Li 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 Signed-off-by: Wei Wang Cc: Michael S. Tsirkin Cc: Paolo Bonzini Cc: Cornelia Huck Cc: Amit Shah Cc: Dave Hansen Cc: Andrea Arcangeli Cc: David Hildenbrand Cc: Liang Li Cc: Wei Wang --- 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 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org