RE: [Xen-devel] Can Xen catch the process switch in HVM guest?

["Cui, Dexuan" <dexuan.cui@xxxxxxxxx>]

Why do you want to "catch the process switch in HVM guest"? What's your exact 
need?
mov_to_cr3 of hvm guest can be intercepted by Xen if we don't consider the case 
of HAP (e.g. EPT), but mov_to_cr3 doesn't mean necessarily process switch and 
even an hvm guest may have no process at all (e.g., the DOS... :-)

BTW, if you could add a hypercall in your guest's process switch code, things 
would be straightforward. :-)

Thanks,
-- Dexuan 

________________________________

From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx 
[mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Dulloor
Sent: 2009年5月22日 15:18
To: Wu Bingzheng
Cc: xen-devel
Subject: Re: [Xen-devel] Can Xen catch the process switch in HVM guest?


Please take a look at sh_update_cr3.

-dulloor


2009/5/22 Wu Bingzheng <wubingzheng@xxxxxxx>


        Hi men,
        
        Can Xen catch the process switch in HVM guest?
        
        Does this depend on how the guest OS implements the process switch?
        
        Can I catch the switch by the instrucion: `MOV to CR3`, or something 
else?
        
        Thanks,
        Wu
        


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