[Xen-devel] RE: [Xen-users] Xen --> Guest

["Petersson, Mats" <Mats.Petersson@xxxxxxx>]

> -----Original Message-----
> From: Security Initiative Team [mailto:passrete@xxxxxxxxx] 
> Sent: 21 March 2007 15:55
> To: Petersson, Mats; xen-devel@xxxxxxxxxxxxxxxxxxx; 
> xen-users@xxxxxxxxxxxxxxxxxxx
> Subject: RE: [Xen-users] Xen --> Guest
> 
> I have some monitoring capabilities set up in Xen
> and when that is triggered, I want to notify the DomU
> to take some action.
> 
> Example: If a certain part of memory is touched, Xen 
> sees that and wants to inform the DomU of this.
> 
> So, all I need is to set a bit somewhere that can
> be constantly polled by the DomU (waiting for it to flip)

And isn't this EXACTLY what the event-channel does?

--
Mats
> 
> Thanks,
> -Brian
> 
> "Petersson, Mats" <Mats.Petersson@xxxxxxx> wrote:
> 
> 
> 
>       > -----Original Message-----
>       > From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx 
>       > [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of 
>       > Security Initiative Team
>       > Sent: 21 March 2007 01:03
>       > To: xen-devel@xxxxxxxxxxxxxxxxxxx; 
> xen-users@xxxxxxxxxxxxxxxxxxx
>       > Subject: [Xen-users] Xen --> Guest
>       > 
>       > What's the easiest way to send 1-bit of information from
>       > Xen to a guest domain?
>       
>       What do you want this 1-bit of information to achieve 
> at the other
>       end... 
>       
>       Without actually knowing what you're trying to achieve, 
> it's kind of
>       hard to answer the question. 
>       
>       --
>       Mats
>       > 
>       > The event channel mechanism seems fairly complicated.
>       > 
>       > Thanks,
>       > -Brian
>       > 
>       > 
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