Re: [PATCH v7 8/8] x86/tlb: just do tlb flush on one of siblingsof SMT

[Alex Shi]

On 05/24/2012 04:42 PM, Peter Zijlstra wrote:

> On Thu, 2012-05-24 at 16:32 +0800, Alex Shi wrote:
>> So, I use cpumask_t in stack.
> 
> cpumask_t is 512 bytes with NR_CPUS=4096, that's generally considered
> too big to be on stack.


I am not consistent with cpumask_t.
I just want to know why it is too big on stack? Since if it causes
trouble in using, that mean current kernel will fail to run on 4096 CPU
system.
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