From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jacob Gorm Hansen Subject: Re: mapped memory delay? Date: Fri, 18 Feb 2005 17:46:48 -0800 Message-ID: <42169A88.90505@diku.dk> References: Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 7bit In-Reply-To: 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: Xin Zhao Cc: xen-devel@lists.sourceforge.net List-Id: xen-devel@lists.xenproject.org Xin Zhao wrote: > I ran into the following problem: > > I setup a shared ring page and an event channel between two domains (dom0 > and one domU), DomU increases req_prod by one and notify the dom0 via the > event channel, dom0 then check req_prod pointer and process the request in > the shared ring. But I noticed that sometimes dom0 get the irq triggered > by the notification event, but the req_prod remains the same. This > situation only happened occasionally. hi, I would like to do the same thing, right now I have shared mem between domU and dom0, but no good syncronization. Is there an example somewhere of how to do this in the new xcs world? It should be easier now that this code has been separated out, right? thanks, Jacob ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click