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Re: [Xen-devel] Xen compatibility interface numbering

To: Ian Pratt <m+Ian.Pratt@xxxxxxxxxxxx>
Subject: Re: [Xen-devel] Xen compatibility interface numbering
From: Rich Persaud <rich.p@xxxxxxxxxxxxx>
Date: Mon, 07 Mar 2005 05:43:56 -0500
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Ian Pratt wrote:

2.  Does Xen/dom0/Xend perform version checking on domUs?

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.


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