Re: [Xen-devel] How to deallocate memory shared between domain and xen

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

On 11 Aug 2005, at 04:41, Santos, Jose Renato G wrote:

>  OK. For now I will not explictly de-allocate the shared memory,
>   and let the memory be deallocated when the domain dies.
>   I am assuming nothing special has to be done and the memory gets
>   deallocated automaticaly when the domain dies
>   (SHARE_PFN_WITH_DOMAIN() seems to be including the shared
>   page in the list of pages owned by the domain which
>   should be automatically de-alocated when the domain dies, right?).
>   Will this also cause the memory to be returned to the Xen heap?
No, you need to deallocate yourself. Add a hook function off 
domain_destruct(), and do any necessary deallocation there. The refcnts 
are to make sure the domain isn;t killed while other domains may have 
references to its xen-heap pages.
 -- Keir


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