From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qk0-f197.google.com (mail-qk0-f197.google.com [209.85.220.197]) by kanga.kvack.org (Postfix) with ESMTP id 2AEC06B038A for ; Tue, 7 Mar 2017 23:02:07 -0500 (EST) Received: by mail-qk0-f197.google.com with SMTP id f191so42458066qka.7 for ; Tue, 07 Mar 2017 20:02:07 -0800 (PST) Received: from mx1.redhat.com (mx1.redhat.com. [209.132.183.28]) by mx.google.com with ESMTPS id o1si1934450qtb.185.2017.03.07.20.01.44 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 07 Mar 2017 20:01:44 -0800 (PST) Date: Wed, 8 Mar 2017 06:01:40 +0200 From: "Michael S. Tsirkin" Subject: Re: [PATCH v7 kernel 2/5] virtio-balloon: VIRTIO_BALLOON_F_CHUNK_TRANSFER Message-ID: <20170308060131-mutt-send-email-mst@kernel.org> References: <1488519630-89058-1-git-send-email-wei.w.wang@intel.com> <1488519630-89058-3-git-send-email-wei.w.wang@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1488519630-89058-3-git-send-email-wei.w.wang@intel.com> Sender: owner-linux-mm@kvack.org List-ID: To: Wei Wang Cc: 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, Liang Li , Paolo Bonzini , Cornelia Huck , Amit Shah , Dave Hansen , Andrea Arcangeli , David Hildenbrand , Liang Li On Fri, Mar 03, 2017 at 01:40:27PM +0800, Wei Wang wrote: > From: Liang Li > > Add a new feature bit, VIRTIO_BALLOON_F_CHUNK_TRANSFER. Please check > the implementation patch commit for details about this feature. better squash into next patch. > 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