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Message-ID: <4CC847D9.3080805@kernel.org> Date: Wed, 27 Oct 2010 17:40:09 +0200 From: Tejun Heo <tj@...nel.org> To: Ingo Molnar <mingo@...e.hu> CC: Linus Torvalds <torvalds@...ux-foundation.org>, Brian Gerst <brgerst@...il.com>, x86@...nel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH] x86-32: Allocate irq stacks seperate from percpu area Hello, Ingo, Linus. On 10/27/2010 05:33 PM, Ingo Molnar wrote: > Btw., the NUMA stuff never really worked percpu alloc, as per Eric's observation: Oh, it works in general. In this case, it's probably because the NUMA configuration is rather weird in 32bit (but then again NUMA on 32bit is supposed to be so). I think it's just 32bit init code setting up early_cpu_to_node() differently. > | Anyway, I just discovered per_cpu data on my machine (NUMA capable) all sit on a > | single node, if 32bit kernel used. > > ... and in practice it's not really relevant on 32-bit anyway. So we can decouple > the two issues just fine. Yeah, the two issues are separate and as I wrote in the other message the end result is correct (as much as it could be). I'll try to dig down what exactly is going on but I don't think there's anything to be alarmed about. Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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