From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Ky Srinivasan" Subject: Re: Is continuous replication of state possible? Date: Fri, 07 Jan 2005 12:22:41 -0700 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline Sender: xen-devel-admin@lists.sourceforge.net Errors-To: xen-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , List-Archive: To: riel@redhat.com Cc: Ian.Pratt@cl.cam.ac.uk, perbu@linpro.no, xen-devel@lists.sourceforge.net List-Id: xen-devel@lists.xenproject.org Ian, as you noted earlier, on an MP machine getting reliable replay will be difficult - locks need to be acquired in the same order during the replay as they were acquired initially. In my previous life we had toyed with implementing a similar strategy on a microkernel (Chorous) based unix system. K. Y >>> Ian Pratt 1/7/2005 12:29:27 PM >>> > On Fri, 7 Jan 2005, Ian Pratt wrote: > > > It basically just requires deterministic execution and event > > injection. > > This will be hard when running crypto programs that get > their random numbers directly from the CPU ... Sure, when CPUs finally get embedded crypto features (and applications start using and _insisting_ on their presence) we'll have problems. For the moment, the technique should work. Ian ------------------------------------------------------- The SF.Net email is sponsored by: Beat the post-holiday blues Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek. It's fun and FREE -- well, almost....http://www.thinkgeek.com/sfshirt _______________________________________________ Xen-devel mailing list Xen-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/xen-devel ------------------------------------------------------- The SF.Net email is sponsored by: Beat the post-holiday blues Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek. It's fun and FREE -- well, almost....http://www.thinkgeek.com/sfshirt