* [PATCH 0/2] Add hypercall interface for cpu online/offline
@ 2008-09-22 8:45 Shan, Haitao
2008-09-22 8:48 ` Keir Fraser
0 siblings, 1 reply; 4+ messages in thread
From: Shan, Haitao @ 2008-09-22 8:45 UTC (permalink / raw)
To: 'Keir Fraser'; +Cc: 'xen-devel@lists.xensource.com'
Hi, Keir,
These two little patches will add a hypercall interface for cpu online/offline.
Currently, I add it to Xen platform ops hypercall. I am not sure whether it is the proper place to hold this. So, any comments or preference from you? Thanks.
Best Regards
Haitao Shan
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH 0/2] Add hypercall interface for cpu online/offline
2008-09-22 8:45 [PATCH 0/2] Add hypercall interface for cpu online/offline Shan, Haitao
@ 2008-09-22 8:48 ` Keir Fraser
2008-09-22 9:34 ` Christoph Egger
0 siblings, 1 reply; 4+ messages in thread
From: Keir Fraser @ 2008-09-22 8:48 UTC (permalink / raw)
To: Shan, Haitao; +Cc: 'xen-devel@lists.xensource.com'
Should be a sysctl. platform_ops are for things we want controlled by,
typically, dom0 kernel. This will be controlled from tools.
-- Keir
On 22/9/08 09:45, "Shan, Haitao" <haitao.shan@intel.com> wrote:
> Hi, Keir,
>
> These two little patches will add a hypercall interface for cpu
> online/offline.
> Currently, I add it to Xen platform ops hypercall. I am not sure whether it is
> the proper place to hold this. So, any comments or preference from you?
> Thanks.
>
> Best Regards
> Haitao Shan
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Re: [PATCH 0/2] Add hypercall interface for cpu online/offline
2008-09-22 8:48 ` Keir Fraser
@ 2008-09-22 9:34 ` Christoph Egger
2008-09-22 9:43 ` Keir Fraser
0 siblings, 1 reply; 4+ messages in thread
From: Christoph Egger @ 2008-09-22 9:34 UTC (permalink / raw)
To: xen-devel; +Cc: Shan, Haitao, Keir Fraser
Please rename offline to poweroff and use offline for
de-coupling the physical CPU from the Xen scheduler only.
This is useful for machine check handling.
Christoph
On Monday 22 September 2008 10:48:17 Keir Fraser wrote:
> Should be a sysctl. platform_ops are for things we want controlled by,
> typically, dom0 kernel. This will be controlled from tools.
>
> -- Keir
>
> On 22/9/08 09:45, "Shan, Haitao" <haitao.shan@intel.com> wrote:
> > Hi, Keir,
> >
> > These two little patches will add a hypercall interface for cpu
> > online/offline.
> > Currently, I add it to Xen platform ops hypercall. I am not sure whether
> > it is the proper place to hold this. So, any comments or preference from
> > you? Thanks.
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^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Re: [PATCH 0/2] Add hypercall interface for cpu online/offline
2008-09-22 9:34 ` Christoph Egger
@ 2008-09-22 9:43 ` Keir Fraser
0 siblings, 0 replies; 4+ messages in thread
From: Keir Fraser @ 2008-09-22 9:43 UTC (permalink / raw)
To: Christoph Egger, xen-devel; +Cc: Shan, Haitao
online/offline is the usual terminology for CPU hotplug. If we need a
separate operation to merely stop scheduling on that pCPU (which isn't
immediately apparent to me) then we'll come up with a name for it.
-- Keir
On 22/9/08 10:34, "Christoph Egger" <Christoph.Egger@amd.com> wrote:
>
> Please rename offline to poweroff and use offline for
> de-coupling the physical CPU from the Xen scheduler only.
> This is useful for machine check handling.
>
> Christoph
>
>
> On Monday 22 September 2008 10:48:17 Keir Fraser wrote:
>> Should be a sysctl. platform_ops are for things we want controlled by,
>> typically, dom0 kernel. This will be controlled from tools.
>>
>> -- Keir
>>
>> On 22/9/08 09:45, "Shan, Haitao" <haitao.shan@intel.com> wrote:
>>> Hi, Keir,
>>>
>>> These two little patches will add a hypercall interface for cpu
>>> online/offline.
>>> Currently, I add it to Xen platform ops hypercall. I am not sure whether
>>> it is the proper place to hold this. So, any comments or preference from
>>> you? Thanks.
>
>
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2008-09-22 9:43 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
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2008-09-22 8:45 [PATCH 0/2] Add hypercall interface for cpu online/offline Shan, Haitao
2008-09-22 8:48 ` Keir Fraser
2008-09-22 9:34 ` Christoph Egger
2008-09-22 9:43 ` Keir Fraser
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