From: Keir Fraser <keir.xen@gmail.com>
To: AP Xen <apxeng@gmail.com>, xen-devel@lists.xensource.com
Subject: Re: Question about xc_translate_foreign_address()
Date: Wed, 25 May 2011 07:16:52 +0100 [thread overview]
Message-ID: <CA025D64.1B039%keir.xen@gmail.com> (raw)
In-Reply-To: <BANLkTinhjVHP+phtS45vNWn0=_kZmbMkGg@mail.gmail.com>
On 25/05/2011 05:47, "AP Xen" <apxeng@gmail.com> wrote:
> I have a question about xc_translate_foreign_address(). When this call
> is issued for VCPU1 in a 2 VCPU guest where VCPU1 is in a paused state
> and VCPU0 is active, there is a possibility that VCPU0 could change
> the page tables that VCPU1 is using. There is a window where the
> function could return incorrect information. Is this true or there is
> something that prevents it from happening?
The assumption is that the whole domain is paused.
-- Keir
> Thanks,
> AP
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xensource.com
> http://lists.xensource.com/xen-devel
prev parent reply other threads:[~2011-05-25 6:16 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-25 4:47 Question about xc_translate_foreign_address() AP Xen
2011-05-25 6:16 ` Keir Fraser [this message]
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