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Re: [Xen-devel] [PATCH] x86: add hypercall to querycurrentunderlying pCP

To: Jan Beulich <jbeulich@xxxxxxxxxx>
Subject: Re: [Xen-devel] [PATCH] x86: add hypercall to querycurrentunderlying pCPU's frequency
From: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
Date: Mon, 22 Sep 2008 10:24:03 +0100
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User-agent: Microsoft-Entourage/
There's a paragraph at:

Since the AB is involved in managing the Xen trademark, and this would be a
decision which is part of defining what Xen is, I think the decision rests
with them.

Their address is xen-advisory-board at same list server as xen-devel. Also
Novell is a member: I think the contact is Holger Dyroff.

 -- Keir

On 22/9/08 10:18, "Jan Beulich" <jbeulich@xxxxxxxxxx> wrote:

> What/who is the Advisory Board, and how would I forward the question to
> it/them? Jan
>>>> Keir Fraser <keir.fraser@xxxxxxxxxxxxx> 22.09.08 10:47 >>>
> Well, I'm not personally against this, if used sensibly, but it sounds the
> sort of thing the Advisory Board would have to be asked about, since it
> could be considered to promote forking of the hypervisor interfaces.
>  -- Keir
> On 22/9/08 08:55, "Jan Beulich" <jbeulich@xxxxxxxxxx> wrote:
>> Okay, in that case I'll have to raise a general infra-structural question: If
>> I'm convinced I/we want something like this for ease of use and consistency
>> with the native kernel, how would I (generally) add (sub-)hypercalls to
>> our Xen flavors without risking to ever collide with upstream? I'd consider
>> something like using (reserving) the number space starting with e.g. ASCII
>> 'NW' (a traditional Novell prefix) in the upper 16 bits, but of course I'd
>> want to have formal insurance that this range would actually remain
>> reserved forever within each (sub-)hypercall ranges (and whatever else
>> may use [pseudo-]enumerated values).
>> Another alternative would obviously be to simply once again use an
>> enumeration of interested parties, who would then have a certain number
>> range globally (across all other [pseudo-]enumerations) reserved for their
>> purposes, i.e. with the upper so-many bits set to that 'vendor' enumerator.

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