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RE: [Xen-devel] Will Xen 4.0 release use the pv-ops kernel despite it's

To: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>, Tom Rotenberg <tom.rotenberg@xxxxxxxxx>
Subject: RE: [Xen-devel] Will Xen 4.0 release use the pv-ops kernel despite it's performance hit
From: "Zhang, Xiantao" <xiantao.zhang@xxxxxxxxx>
Date: Mon, 21 Dec 2009 21:30:32 +0800
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Thread-topic: [Xen-devel] Will Xen 4.0 release use the pv-ops kernel despite it's performance hit
Keir Fraser wrote:
> On 21/12/2009 06:39, "Zhang, Xiantao" <xiantao.zhang@xxxxxxxxx> wrote:
> 
>>> OK.
>>> 
>>> I just thought i saw Jeremy's mail about changing the APIC logic in
>>> Xen to conform to the pv-ops kernel, which i thought will cause new
>>> Xen not to work with old dom0 kernel. This isn't the case?
>> 
>> As I know, new Xen should work with old dom0 after APIC logic
>> changes, but new dom0 may not be able to run on old Xen. To make new
>> dom0 work with old Xen hypervisor, has to backport two small patches
>> Cset#20491 and Cset20509. 
>> Keir,
>>    Do you think we should backport them to Xen3.4-testing tree ?
>> Since logic has no any change, and just added a new hypercall, I
>> think they should be good to xen-3.4-testing tree ?  :)
> 
> Yes, go ahead. They do require backporting (and testing) -- they
> don't apply as-is.

Okay, I will backport them and send it out later.  
Xiantao

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