Re: [PATCH V1] x86, espfix: postpone the initialization of espfix stack for AP

[H. Peter Anvin]

On 06/17/2015 02:04 PM, Borislav Petkov wrote:
>>
>> It isn't *at all* obvious to me at least that if the GFP_KERNEL
>> allocation fails we may not get rescheduled on another CPU and/or get stuck.
>>
>> I'm starting to think that the right thing to do is to allocate these on
>> the CPU that is bringing up the other CPU, at the same time we allocate
>> the percpu area.  This won't affect offline CPUs.
> 
> Btw, as part of experimenting for something else, I was able to trigger
> this even on a guest here. It is an insane guest though: 16 NUMA nodes,
> with 8 cores each:
> 

Is this reliable?

	-hpa

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