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Re: [Xen-devel] what's the best way for a DomU module send control messa

To: Anthony Liguori <aliguori@xxxxxxxxxx>
Subject: Re: [Xen-devel] what's the best way for a DomU module send control message to Dom0 via control interface?
From: Xin Zhao <zhaoxin@xxxxxxxxxxxxxx>
Date: Wed, 19 Jan 2005 15:17:29 -0500 (EST)
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Unfortunately, yes. I am running Xend. Is there any way to bypass xend and
handle requests myself? I really don't want to spend time in digging into
the xend codes. :(

Thanks,
xin

On Wed, 19 Jan 2005, Anthony Liguori wrote:

> On Wed, 2005-01-19 at 13:53, Xin Zhao wrote:
> > One way seems to be ctrl_if_send_message_block like functions. I did
> > register a receiver in a Dom0 kernel module, then use
> > ctrl_if_send_message_block() to send msg to Dom0 module, if the Dom0
> > module gets the msg, it should print out some information. Unfortunately,
> > after DomU module sent out msg, nothing happened. The msg seems to be lost
> > by Dom0, why?
>
> Are you running Xend?  Xend will catch any unknown requests and drop
> them.
>
> Regards,
>
> > I also tried to use a revised xu_port_send_request() function in Dom0 to
> > send msg over control interface to a DomU module, it works, but when I
> > tried to use the same way to send a msg from DomU to Dom0, again, Dom0
> > lost this msg.
> >
> > Can somebody help me out? Thanks in advance!
> >
> > -x
> >
> >
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> --
> Anthony Liguori
> Linux Technology Center (LTC) - IBM Austin
> E-mail: aliguori@xxxxxxxxxx
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>
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