Re: [Xen-devel] Re: [PATCH 1/3] xen/granttable: Introducing grant table V2 stucture

[ANNIE LI <annie.li@oracle.com>]

On 2011-11-18 0:29, Konrad Rzeszutek Wilk wrote:
>>> The more normal way to do this would be to make gnttab_interface a
>>> pointer, define gnttab_v1_ops and do:
>>> 	gnttab_interface =&gnttab_v1_ops;
>>> or if the pointer overhead is significant remove that and just do a
>>> struct assignment:
>>> 	gnttab_interface = gnttab_v1_ops;
>>>
>> If using this way, we need two more public structures(gnttab_v1_ops
>> and gnttab_v2_ops), and two more functions to initialize those two
>> structures and then initialize the pointer gnttab_interface. It is
>> more complicated, am i missing something?
> Why two functions? I agree on the structures - but they need not to be
> public (they can be static).
>
> For a good example look at how apic_physflat is done.
Thanks, static structure is simpler and clean. I am very glad to change 
that.:-)

Thanks
Annie
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