From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ian Campbell <Ian.Campbell@citrix.com>
Subject: Re: bug in hvmloader xenbus_shutdown logic
Date: Wed, 4 Dec 2013 09:49:44 +0000
Message-ID: <1386150584.15530.7.camel@kazak.uk.xensource.com>
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To: "Liuqiming (John)" <john.liuqiming@huawei.com>
Cc: Yanqiangjun <yanqiangjun@huawei.com>, "xen-devel@lists.xen.org" <xen-devel@lists.xen.org>
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On Wed, 2013-12-04 at 04:25 +0000, Liuqiming (John) wrote:

> memset can not set all the page to zero in an atomic way, and during
> the clear up process oxenstored may access this ring.

Why is oxenstored poking at the ring? Surely it should only do so when
the guest (hvmloader) sends it a request. If hvmloader is clearing the
page while there is a request/event outstanding then this is an
hvmloader bug.

Ian.