From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <SRS0=Ic/D=XV=lists.ozlabs.org=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@kernel.org>
X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on
	aws-us-west-2-korg-lkml-1.web.codeaurora.org
X-Spam-Level: 
X-Spam-Status: No, score=-2.0 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED,
	HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,
	USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0
Received: from mail.kernel.org (mail.kernel.org [198.145.29.99])
	by smtp.lore.kernel.org (Postfix) with ESMTP id E4F40C432C2
	for <linuxppc-dev@archiver.kernel.org>; Thu, 26 Sep 2019 09:09:10 +0000 (UTC)
Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2])
	(using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
	(No client certificate requested)
	by mail.kernel.org (Postfix) with ESMTPS id 5459E222C0
	for <linuxppc-dev@archiver.kernel.org>; Thu, 26 Sep 2019 09:09:09 +0000 (UTC)
Authentication-Results: mail.kernel.org;
	dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="BgHKnk2v"
DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5459E222C0
Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org
Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org
Received: from bilbo.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3])
	by lists.ozlabs.org (Postfix) with ESMTP id 46f8Hj3RzZzDqld
	for <linuxppc-dev@archiver.kernel.org>; Thu, 26 Sep 2019 19:09:05 +1000 (AEST)
Authentication-Results: lists.ozlabs.org;
 spf=none (mailfrom) smtp.mailfrom=infradead.org
 (client-ip=2001:8b0:10b:1231::1; helo=merlin.infradead.org;
 envelope-from=peterz@infradead.org; receiver=<UNKNOWN>)
Authentication-Results: lists.ozlabs.org;
 dmarc=none (p=none dis=none) header.from=infradead.org
Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key;
 unprotected) header.d=infradead.org header.i=@infradead.org
 header.b="BgHKnk2v"; dkim-atps=neutral
Received: from merlin.infradead.org (merlin.infradead.org
 [IPv6:2001:8b0:10b:1231::1])
 (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)
 key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256)
 (No client certificate requested)
 by lists.ozlabs.org (Postfix) with ESMTPS id 46f8Fc4qswzDqlW
 for <linuxppc-dev@lists.ozlabs.org>; Thu, 26 Sep 2019 19:07:16 +1000 (AEST)
DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed;
 d=infradead.org; s=merlin.20170209; h=In-Reply-To:Content-Type:MIME-Version:
 References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To:
 Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date:
 Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:
 List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive;
 bh=T6V6sHrSOqc/+UxTCdyudq0YVOaWNkuCBPZFUY0n27I=; b=BgHKnk2vgdUwt+yhXHlGCcsjP
 WK1sr0QG/j8kkdNDc8VLtgKtd0D2pUEqo+NBXzQKHsyc4AvbsI1zGCPuoE4cG9A7zIyMc6/MzRInU
 uVsmsR1b746rjHsQ2cwRIdmOxlkyD4sHP61LexMMYLPN86L8vm+2YbELkbJZr01XMxmz53SP969jp
 Aq2q8+MqqX3ZQepkJUFdBzKYB+wV986kA1457En35eQQdUwiiTZCobuDkWHkS1QGKY3o8q5yGiKl9
 rCpvAat06QhNHwdZQhvMB976R4uqvhgCSiw4BqgCNNmDQjCCB+WD6HjfeQFtFCeXvlLkZNk97ZA/R
 6ALfUnX/Q==;
Received: from j217100.upc-j.chello.nl ([24.132.217.100]
 helo=noisy.programming.kicks-ass.net)
 by merlin.infradead.org with esmtpsa (Exim 4.92.2 #3 (Red Hat Linux))
 id 1iDPiv-00039o-SN; Thu, 26 Sep 2019 09:06:06 +0000
Received: from hirez.programming.kicks-ass.net
 (hirez.programming.kicks-ass.net [192.168.1.225])
 (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
 (Client did not present a certificate)
 by noisy.programming.kicks-ass.net (Postfix) with ESMTPS id D8A0F302A71;
 Thu, 26 Sep 2019 11:05:12 +0200 (CEST)
Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000)
 id 2F69720138CC0; Thu, 26 Sep 2019 11:05:59 +0200 (CEST)
Date: Thu, 26 Sep 2019 11:05:59 +0200
From: Peter Zijlstra <peterz@infradead.org>
To: Michal Hocko <mhocko@kernel.org>
Subject: Re: [PATCH v6] numa: make node_to_cpumask_map() NUMA_NO_NODE aware
Message-ID: <20190926090559.GA4581@hirez.programming.kicks-ass.net>
References: <20190924115401.GM23050@dhcp22.suse.cz>
 <20190924120943.GP2349@hirez.programming.kicks-ass.net>
 <20190924122500.GP23050@dhcp22.suse.cz>
 <20190924124325.GQ2349@hirez.programming.kicks-ass.net>
 <20190924125936.GR2349@hirez.programming.kicks-ass.net>
 <20190924131939.GS23050@dhcp22.suse.cz>
 <20190925104040.GD4553@hirez.programming.kicks-ass.net>
 <20190925132544.GL23050@dhcp22.suse.cz>
 <20190925163154.GF4553@hirez.programming.kicks-ass.net>
 <20190925214526.GA4643@worktop.programming.kicks-ass.net>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20190925214526.GA4643@worktop.programming.kicks-ass.net>
User-Agent: Mutt/1.10.1 (2018-07-13)
X-BeenThere: linuxppc-dev@lists.ozlabs.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Linux on PowerPC Developers Mail List <linuxppc-dev.lists.ozlabs.org>
List-Unsubscribe: <https://lists.ozlabs.org/options/linuxppc-dev>,
 <mailto:linuxppc-dev-request@lists.ozlabs.org?subject=unsubscribe>
List-Archive: <http://lists.ozlabs.org/pipermail/linuxppc-dev/>
List-Post: <mailto:linuxppc-dev@lists.ozlabs.org>
List-Help: <mailto:linuxppc-dev-request@lists.ozlabs.org?subject=help>
List-Subscribe: <https://lists.ozlabs.org/listinfo/linuxppc-dev>,
 <mailto:linuxppc-dev-request@lists.ozlabs.org?subject=subscribe>
Cc: dalias@libc.org, linux-sh@vger.kernel.org, catalin.marinas@arm.com,
 dave.hansen@linux.intel.com, heiko.carstens@de.ibm.com,
 jiaxun.yang@flygoat.com, linux-mips@vger.kernel.org, mwb@linux.vnet.ibm.com,
 paulus@samba.org, hpa@zytor.com, sparclinux@vger.kernel.org, chenhc@lemote.com,
 will@kernel.org, cai@lca.pw, linux-s390@vger.kernel.org,
 ysato@users.sourceforge.jp, x86@kernel.org,
 Yunsheng Lin <linyunsheng@huawei.com>, rppt@linux.ibm.com,
 borntraeger@de.ibm.com, dledford@redhat.com, mingo@redhat.com,
 jeffrey.t.kirsher@intel.com, jhogan@kernel.org, mattst88@gmail.com,
 len.brown@intel.com, gor@linux.ibm.com, anshuman.khandual@arm.com,
 gregkh@linuxfoundation.org, bp@alien8.de, luto@kernel.org, tglx@linutronix.de,
 naveen.n.rao@linux.vnet.ibm.com, linux-arm-kernel@lists.infradead.org,
 rth@twiddle.net, axboe@kernel.dk, linuxppc-dev@lists.ozlabs.org,
 linux-kernel@vger.kernel.org, ralf@linux-mips.org, tbogendoerfer@suse.de,
 paul.burton@mips.com, linux-alpha@vger.kernel.org, rafael@kernel.org,
 ink@jurassic.park.msu.ru, akpm@linux-foundation.org, robin.murphy@arm.com,
 davem@davemloft.net
Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org
Sender: "Linuxppc-dev"
 <linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org>

On Wed, Sep 25, 2019 at 11:45:26PM +0200, Peter Zijlstra wrote:
> [    7.149889] [Firmware Bug]: device: 'pci0000:7f': no node assigned on NUMA capable HW
> [    7.882888] [Firmware Bug]: device: 'pci0000:ff': no node assigned on NUMA capable HW

Going by the limited number of intel numa boxes I have, it looks like:

  socket = (~busid) >> (8-n)

where 'n' is the number of bits required to encode the largest socket
id, ie 1 for 2-socket and 2 for 4 socket.

For 8 socket systems we start using pci domains, and things get more
'interesting' :/