Re: [Xen-devel] Xen compatibility interface numbering

[Rich Persaud <rich.p@xxxxxxxxxxxxx>]

Ian Pratt wrote:

> > 2.  Does Xen/dom0/Xend perform version checking on domUs?
> >    
> Yes.
>  
Out of curiosity, what happens in dom0 if a domU spoofs its interface 
version?
> > 3.  Can a binary Xen kernel be queried for its compatibility version?
> >    
> There's a dom0 op that queries the interface version.
>  
Is this accessible to the management tools, i.e. can Xend report the 
dom0 interface version to userland? 

If I have a domU binary kernel image (vmlinuz), is there any way to 
query its interface version (even a search string for strings+grep)?
> > 4.  How frequently does the Xen compatibility interface change?
> >    
> Only when there's a major release number change.
>  
Major = 1.x, 2.x, 3.x, not 2.0.4 to 2.0.5-pre, right? So the Xen 
interface is compatible between 2.0.4 and the testing/unstable tree.
Rich


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