From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:38320) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WzHVB-0007zu-Uj for qemu-devel@nongnu.org; Mon, 23 Jun 2014 23:34:43 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1WzHV2-0005ap-Tt for qemu-devel@nongnu.org; Mon, 23 Jun 2014 23:34:33 -0400 Received: from e33.co.us.ibm.com ([32.97.110.151]:53121) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WzHV2-0005al-LO for qemu-devel@nongnu.org; Mon, 23 Jun 2014 23:34:24 -0400 Received: from /spool/local by e33.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Mon, 23 Jun 2014 21:34:23 -0600 Received: from b03cxnp08025.gho.boulder.ibm.com (b03cxnp08025.gho.boulder.ibm.com [9.17.130.17]) by d03dlp01.boulder.ibm.com (Postfix) with ESMTP id 9368F1FF001B for ; Mon, 23 Jun 2014 21:34:19 -0600 (MDT) Received: from d03av01.boulder.ibm.com (d03av01.boulder.ibm.com [9.17.195.167]) by b03cxnp08025.gho.boulder.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id s5O3YJPn9437618 for ; Tue, 24 Jun 2014 05:34:19 +0200 Received: from d03av01.boulder.ibm.com (localhost [127.0.0.1]) by d03av01.boulder.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id s5O3YJnC009737 for ; Mon, 23 Jun 2014 21:34:19 -0600 Date: Mon, 23 Jun 2014 20:34:15 -0700 From: Nishanth Aravamudan Message-ID: <20140624033415.GA31775@linux.vnet.ibm.com> References: <20140623193310.GD4323@linux.vnet.ibm.com> <20140624004825.GE4323@linux.vnet.ibm.com> <20140624010833.GF4323@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20140624010833.GF4323@linux.vnet.ibm.com> Subject: Re: [Qemu-devel] [RFC PATCH] ppc/spapr: support sparse NUMA node numbering List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: "Michael S. Tsirkin" Cc: Alexey Kardashevskiy , David Rientjes , Eduardo Habkost , anton@samba.org, qemu-devel@nongnu.org Hi David, On 23.06.2014 [18:08:33 -0700], Nishanth Aravamudan wrote: > With generic sparse NUMA node parsing in place ("numa: enable sparse > node numbering"), ppc can be updated to iterate over only the > user-specified nodes. > > qemu-system-ppc64 -machine pseries,accel=kvm,usb=off -m 4096 > -realtime mlock=off -numa node,nodeid=3 -numa node,nodeid=2 -smp 4 I'd like to do so something similar for x86 as a follow-on patch, but I don't really know what the SRAT should look like, or what the APIC mapping should be to have sparse NUMA numbering? Some cursory googling indicates you've run into this in practice? Possibly with a bad APIC? Thanks, Nish