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xen-devel
[Xen-devel] RE: [PATCH 0/6] Add memory add support to Xen
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To: |
"Nakajima, Jun" <jun.nakajima@xxxxxxxxx>, Keir Fraser <keir.fraser@xxxxxxxxxxxxx>, Jan Beulich <jbeulich@xxxxxxxxxx>, Tim Deegan <Tim.Deegan@xxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx> |
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Subject: |
[Xen-devel] RE: [PATCH 0/6] Add memory add support to Xen |
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From: |
"Jiang, Yunhong" <yunhong.jiang@xxxxxxxxx> |
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Date: |
Mon, 29 Jun 2009 13:58:31 +0800 |
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Sun, 28 Jun 2009 23:00:23 -0700 |
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Thread-topic: |
[PATCH 0/6] Add memory add support to Xen |
Nakajima, Jun wrote:
> Jiang, Yunhong wrote on Sun, 28 Jun 2009 at 02:26:51:
>
>>
>> There are several option to support it.
>> a) Move the ACPI event to Xen HV, that is sure to be a big changes.
>> b) Add some hook in Dom0, so that instead of add the new memory to
>> dom0, it will use hypercall to notify Xen HV.
>> c) Change current dom0 implementation. When dom0 get the ACPI event
>> and get the memory device's resource, it will not directly add the
>> memry to system, instead, it will notify user space with uevent. The
>> uevent script will ask kernel to add the new memory to system. In Xen
>> environment, the uevent script will notify Xen HV. We are still
>> investigating on this option.
>>
>> We are in early stage . any suggestion or new idea will be helpful
>> to us and welcome.
>>
>
> I think the option b is the practical choice because the
> kernel typically has a well-defined routine for that, and the
> maintenance cost of the diff for dom0 should be very low. The
> option c may not work for other OS like Solaris...
Yes, the diff will be low. We will work on this way.
--jyh
>
> Jun
> ___
> Intel Open Source Technology Center
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