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From: "Wu Bingzheng" <wubingzheng@163.com>
To: xen-devel <xen-devel@lists.xensource.com>
Subject: can dom0 modify Shadow PT of HVM domU?
Date: Wed, 26 Aug 2009 16:35:35 +0800 (CST)	[thread overview]
Message-ID: <33221896.741851251275735463.JavaMail.coremail@bj163app34.163.com> (raw)


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Hi all,

Can Xen hypervisor modify HVM domU's Shadow page table, under the dom0's context, like trapped from dom0's hypercall?

I think it have to call 2 functions at least: guest_walk_tables() and flush_tlb_all(). Can these 2 functions called in dom0's context?

In my test, if hypervisor tries to modify HVM's shadow page table, it will bring down the whole system. I am not sure what's the reason.

Thanks,
Wu

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             reply	other threads:[~2009-08-26  8:35 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-08-26  8:35 Wu Bingzheng [this message]
2009-08-26  9:00 ` can dom0 modify Shadow PT of HVM domU? Tim Deegan
2009-08-26  9:30   ` Wu Bingzheng
2009-08-26 10:01     ` Tim Deegan
2009-08-26 10:30       ` Wu Bingzheng
2009-08-26 12:58         ` Keir Fraser
2009-08-28  1:21           ` Wu Bingzheng

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