From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ian Campbell Subject: Re: [PATCH v3 COLOPre 16/26] tools/libx{l, c}: add back channel to libxc Date: Tue, 30 Jun 2015 11:10:52 +0100 Message-ID: <1435659052.21469.68.camel@citrix.com> References: <1435213552-10556-1-git-send-email-yanghy@cn.fujitsu.com> <1435213552-10556-17-git-send-email-yanghy@cn.fujitsu.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1435213552-10556-17-git-send-email-yanghy@cn.fujitsu.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Yang Hongyang Cc: wei.liu2@citrix.com, wency@cn.fujitsu.com, andrew.cooper3@citrix.com, yunhong.jiang@intel.com, eddie.dong@intel.com, xen-devel@lists.xen.org, guijianfeng@cn.fujitsu.com, rshriram@cs.ubc.ca, Ian Jackson List-Id: xen-devel@lists.xenproject.org On Thu, 2015-06-25 at 14:25 +0800, Yang Hongyang wrote: > We need to send secondary's dirty page pfns back to primary. In v2 Ian asked (<21888.2988.774072.32946@mariner.uk.xensource.com>): In the pdf http://www.socc2013.org/home/program/a3-dong.pdf?attredirects=0 linked from the wiki page http://wiki.xen.org/wiki/COLO_-_Coarse_Grain_Lock_Stepping it says that the secondary keeps a copy of the original contents of its dirty pages. So I don't understand why you need to send the dirty bitmap to the primary. Which I don't see an answer for in my archive. Have I missed (or misplaced) the answer? Ian