Xen devel - Nov 2006 - [Xen-ia64-devel] RE: struct xen_domctl_getmemlist''s start_pfn member

>From: Jan Beulich
>Sent: 2006年11月6日 21:17
>
>What is the purpose of this member? Neither does it seem to get set
>(e.g.
>xc_get_pfn_list), nor does it seem to get read.
>
>Thanks, Jan
>
>
Xen/ia64 is the only user on this member, with some historical 
requirement to query a specific frame list starting from given point. 
One reason I remembered is that once xen/ia64 adopted a policy 
to allocate machine frames dynamically upon lookup request by 
above getmemlist, and thus allow control panel to query-then-allocate 
for a specific region. But this requirement has disappeared for a long 
time. Not sure whether latest xen/ia64 still has other usage model. 
If not, it''s better to be cleared.

Thanks,
Kevin

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