From: 房海峰 <fhf25@126.com>
To: Keir Fraser <keir.fraser@eu.citrix.com>,
"xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>
Subject: Some questions about Xenstore&Xenbus
Date: Thu, 5 Nov 2009 17:52:44 +0800 [thread overview]
Message-ID: <200911051752427287056@126.com> (raw)
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hi, Keir:
Now i am studying the source code of Xenbus (version 3.1).
I found that, in "xenbus_init()", it seems the xenbus need allocate a page for xen_store_mfn in Dom0, while in DomU the value of xen_store_mfn can be obtained from "xen_store_info". So, i guess that every domain has a machine page for xenstore-ring-buffer, that is xen_store_mfn. But, i am puzzled as follows:
if xenbus is the client, is xenstored in Dom0 the server, and is xen_store_mfn the communication channel between them?
where can i find the allocation for xen_store_mfn?
is the xen_store_mfn different for per domain?
can i switch off the communication between xenbus and xenstored after i successfully logined into the DomainU?
thanks a lot!
Haifeng Fang
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