Re: [Xen-devel] How does hypervisor handle the hypercalls fromguest OSes?

["K.C. Chiu" <B8844014@xxxxxxxxxxxxxxxxx>]

Thanks a lot !!

Well, I'm trying to enhance the operating system security through VMM
technology.

For guest OS's Audit log, I want to put the audit log file in domain 0's
file system to avoid any modification from guest OSes.

therefore, I need to encapsulate a new command into dom0's operation
hypercall and hanlde the command in hypervisor to read the audit log file.

Now I'm trying to find out how to handle the hypercalls and the event
notifications from hypervisor to guest OSes.

And these works may need your helps !! ^ ^

Cheers

-- C.K. Chiu , Taiwan

----- Original Message ----- 
From: "Ian Pratt" <Ian.Pratt@xxxxxxxxxxxx>
To: "K.C. Chiu" <B8844014@xxxxxxxxxxxxxxxxx>
Cc: <rolf.neugebauer@xxxxxxxxx>; <xen-devel@xxxxxxxxxxxxxxxxxxxxx>;
<Ian.Pratt@xxxxxxxxxxxx>
Sent: Tuesday, May 11, 2004 2:18 PM
Subject: Re: [Xen-devel] How does hypervisor handle the hypercalls fromguest
OSes?


>
> > But I have another question, how do I debug in the Xen hypervisor side?
> >
> > Just "printk" ?
>
> Connect something (e.g. another computer) to the serial console,
> and boot Xen with serial console enabled.
>
> As well as printk, Xen has a GDB stub. This is quite powerful,
> and can be used for debugging domains and processes too.
>
> > However I could not find out any print message in /var/log/message and
the
> > xen_read_console ?
>
> "xen_dmesg.py" in dom0 will show you the console output from
> *Xen*. (//var/log/messages and xen_read_console are domain
> console tools).
>
> For any serious debugging, get yourself a serial line. xen_dmesg
> isn't much use if either Xen or domain 0 are already blown to bits.
>
> BTW: What does your new hypercall do?
>
> Ian
>
>
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