From mboxrd@z Thu Jan  1 00:00:00 1970
From: Alex Williamson <alex.williamson@hp.com>
Subject: Re: [Xen-ia64-devel] RE: Help? Red Hat fails,
	Suse/Debian both work fine
Date: Thu, 02 Mar 2006 11:56:57 -0700
Message-ID: <1141325817.27443.46.camel@localhost>
References: <571ACEFD467F7749BC50E0A98C17CDD8094E78A4@pdsmsx403>
	<2CC63E0C90481Ctakebe_akio@jp.fujitsu.com>
	<1141320240.27443.30.camel@localhost>
	<20060302184124.GJ6192@leeni.uk.xensource.com>
Mime-Version: 1.0
Content-Type: text/plain
Content-Transfer-Encoding: 7bit
Return-path: <xen-devel-bounces@lists.xensource.com>
In-Reply-To: <20060302184124.GJ6192@leeni.uk.xensource.com>
List-Unsubscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
List-Post: <mailto:xen-devel@lists.xensource.com>
List-Help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-Subscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
Sender: xen-devel-bounces@lists.xensource.com
Errors-To: xen-devel-bounces@lists.xensource.com
To: Ewan Mellor <ewan@xensource.com>
Cc: "Tian, Kevin" <kevin.tian@intel.com>, xen-devel <xen-devel@lists.xensource.com>, Akio Takebe <takebe_akio@jp.fujitsu.com>, "Magenheimer,
	Dan (HP Labs Fort Collins)" <dan.magenheimer@hp.com>, "Xu,
	Anthony" <anthony.xu@intel.com>, xen-ia64-devel@lists.xensource.com
List-Id: xen-devel@lists.xenproject.org

On Thu, 2006-03-02 at 18:41 +0000, Ewan Mellor wrote:
> 
> These are requests from the xenbus driver to create watches to monitor for new
> devices being created.  That presumably means that either your xenbus driver
> is fubar'd, or the mmap'd page is bust, as discussed earlier.
> 
> The requests that you are seeing are from xenconsoled and xend, each of which
> is using the unix domain socket to talk to the store, not the shared page.

  If I dump the xsd_kva page using mmap from another app, there are a
few entries made:

0000: 01 00 00 00 00 00 00 00 00 00 00 00 07 00 00 00
0010: 64 65 76 69 63 65 00 00 00 00 00 00 00 00 00 00
0020: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
...
0400: 10 00 00 00 00 00 00 00 00 00 00 00 07 00 00 00
0410: 45 4e 4f 45 4e 54 00 00 00 00 00 00 00 00 00 00
0420: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
...
0800: 17 00 00 00 17 00 00 00 00 00 00 00 17 00 00 00

As you indicate, lots of output in the xenstored-trace file, but hardly
anything here.  We are getting some transactions in there though, so
maybe we're dealing with a memory ordering issue.  Thanks,

	Alex

-- 
Alex Williamson                             HP Linux & Open Source Lab