Re: [Xen-devel] [PATCH 2/2] tools/libxl: Introduce LIBXL_CPUPOOL_POOLID_ANY

[George Dunlap <george.dunlap@xxxxxxxxxx>]

On Tue, Feb 14, 2017 at 10:29 AM, Wei Liu <wei.liu2@xxxxxxxxxx> wrote:
> On Thu, Feb 09, 2017 at 11:35:16AM +0000, George Dunlap wrote:
>> No.  This is why I'm bothering to paint this bikeshed: In every context
>> *except* "cpupool create", 0 means cpupool0 -- the one that was created
>> at boot, which always contains dom0, and which cannot be destroyed.
>> (You can only remove all but one of the cpus.)  If you remove a cpupool
>> from poolid 0, you remove it from cpupool0, not "any" pool.  If you
>> create a domain and ask to put it in poolid 0, it will be put in
>> cpupool0, not "any" pool.  The only context in which "0" currently means
>> "any" is when you're creating a cpupool.
>>
>
> OK. This makes sense.
>
[snip]
>> > I want to reserve the possibility to change that into an enum in the
>> > future.
>>
>> Yes, I had thought of that -- but like I said, I thought enums were
>> meant mostly for things for which there was an exhaustive list.  In this
>> case it's a "magic" value for a parameter which normally has a plain
>> numerical meaning.
>>
>> But I can add the #define if you wish.
>>
>
> You don't need to do that.

Is that an Ack? :-)

 -George

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