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xen-devel
RE: [Xen-devel] RE: [PATCH] x86: add CMCI software injection interface
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To: |
Keir Fraser <keir.fraser@xxxxxxxxxxxxx>, Frank Van Der Linden <frank.van.der.linden@xxxxxxxxxx>, "Ke, Liping" <liping.ke@xxxxxxxxx> |
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Subject: |
RE: [Xen-devel] RE: [PATCH] x86: add CMCI software injection interface |
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From: |
"Jiang, Yunhong" <yunhong.jiang@xxxxxxxxx> |
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Date: |
Wed, 5 May 2010 17:34:43 +0800 |
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"Christoph@xxxxxxxxxxxxxxxxxxxx" <Christoph@xxxxxxxxxxxxxxxxxxxx>, Egger <Christoph.Egger@xxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, "gavin.maltby@xxxxxxxxxx" <gavin.maltby@xxxxxxxxxx> |
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Wed, 05 May 2010 02:36:01 -0700 |
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[Xen-devel] RE: [PATCH] x86: add CMCI software injection interface |
Ok, we will do it this way.
--jyh
>-----Original Message-----
>From: Keir Fraser [mailto:keir.fraser@xxxxxxxxxxxxx]
>Sent: Wednesday, May 05, 2010 5:21 PM
>To: Jiang, Yunhong; Frank Van Der Linden; Ke, Liping
>Cc: Christoph@xxxxxxxxxxxxxxxxxxxx; Egger; xen-devel@xxxxxxxxxxxxxxxxxxx;
>gavin.maltby@xxxxxxxxxx
>Subject: Re: [Xen-devel] RE: [PATCH] x86: add CMCI software injection interface
>
>On 05/05/2010 10:07, "Jiang, Yunhong" <yunhong.jiang@xxxxxxxxx> wrote:
>
>>> If going with the former option it would be good to think ahead in your
>>> designs and make sure you end up adding the smallest possible number of new
>>> XEN_MC_* commands. It could easily become a real mess I'm sure.
>>
>> "either of these"? Maybe I didn't express my idea clearly. I didn't propose
>> two options. I just suggest to use a new command for this purpose. And we can
>> update the version number if needed.
>>
>> BTW, as currently Xen already will return -EINVAL for not-support command
>> (i.e. <= 5), maybe the version number update is not needed. ( the -EINVAL may
>> be not good as -ENOSYS).
>
>Oh, sorry, I thought you were expressing either-or. If you add a new command
>then you do not update the version number: that would pointlessly disable
>MCE on older guests.
>
> -- Keir
>
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