[Xen-devel] Re: [PATCHv2 1/4] libxl: extend physinfo structure

[Paolo Bonzini <pbonzini@xxxxxxxxxx>]

On 04/21/2010 04:17 PM, Andre Przywara wrote:
> The libxl version of the physinfo sysctl does not contain some
> fields like nr_nodes or capabilities needed for xl info output.
> Add them to the structure and the retrieving function.
Vincent, Stefano, is it okay to break the ABI?

If so, I suggest adding an initial member to be filled with sizeof() of 
the structure, similar to many Win32 APIs like GetVersionEx.
http://msdn.microsoft.com/en-us/library/ms724451%28VS.85%29.aspx
http://msdn.microsoft.com/en-us/library/ms724834%28VS.85%29.aspx
http://msdn.microsoft.com/en-us/library/ms724833%28VS.85%29.aspx

Paolo

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