RE: [PATCH] x86/hyper-v: Zero out the VP assist page to fix CPU offlining

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On Thu, 18 Jul 2019, Dexuan Cui wrote:
> 
> The concept of the "overlay page" seems weird, and frankly speaking, 
> I don't really understand why the Hyper-V guys invented it, but as far
> as this patch here is concerned, I think the patch is safe and it can
> indeed fix the CPU offlining issue I described.

Then this needs some really good explanation and in the change log because
that's really obscure behaviour.

Thanks,

	tglx
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