linux-kernel - Re: [PATCH] numa, mem-hotplug: Fix stack overflow in numa when seting kernel nodes to unhotpluggable.

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Message-ID: <alpine.DEB.2.02.1401222214290.8088@chino.kir.corp.google.com>
Date:	Wed, 22 Jan 2014 22:15:51 -0800 (PST)
From:	David Rientjes <rientjes@...gle.com>
To:	Dave Jones <davej@...hat.com>, Tang Chen <tangchen@...fujitsu.com>,
	tglx@...utronix.de, mingo@...hat.com, hpa@...or.com,
	akpm@...ux-foundation.org, zhangyanfei@...fujitsu.com,
	guz.fnst@...fujitsu.com, x86@...nel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] numa, mem-hotplug: Fix stack overflow in numa when seting
 kernel nodes to unhotpluggable.

On Thu, 23 Jan 2014, Dave Jones wrote:

> It's 10, because I had MAXSMP set.
> 
> So, MAX_NUMNODES = 1 << 10
> 
> And the bitmask is made of longs. 1024 of them.
> 
> How does this work ?
> 

It's 1024 bits.
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