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SubjectRE: [PATCH 6/8] x86, topology.c: Enable CPU0 online/offline
> 
> > + * Suspend/resume depends on BSP. Certain PCI quirks (which PCI
> > + * quirks??) require not to enable hotplug control for all CPU's.
>
> Again, you dammit better make shure which quirks break when cpu0 is
> offlined.
>

Maybe I misunderstood the comment in arch/x86/kernel/topology.c

+ * Also certain PCI quirks require not to enable hotplug control
+ * for all CPU's.
+ */

and commit b0d0a4ba45760b10ecee9035ed45b442c1a6cc84

So there is NO PCI quirks dependency on CPU0 hotplug.

I'm going to send out a new cpu0 online/offline patch set after collecting all the comments so far.

Thanks.

-Fenghua


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