From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from omx2.sgi.com (omx2-ext.sgi.com [192.48.171.19]) by ozlabs.org (Postfix) with ESMTP id 7B2B467BF3 for ; Thu, 19 Oct 2006 01:12:55 +1000 (EST) Date: Wed, 18 Oct 2006 08:12:51 -0700 (PDT) From: Christoph Lameter To: Paul Mackerras Subject: Re: kernel BUG in __cache_alloc_node at linux-2.6.git/mm/slab.c:3177! In-Reply-To: <17717.50596.248553.816155@cargo.ozlabs.ibm.com> Message-ID: References: <1160764895.11239.14.camel@farscape> <1160769226.11239.22.camel@farscape> <1160773040.11239.28.camel@farscape> <1161026409.31903.15.camel@farscape> <1161031821.31903.28.camel@farscape> <17717.50596.248553.816155@cargo.ozlabs.ibm.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: Christoph Lameter Cc: akpm@osdl.org, linuxppc-dev@ozlabs.org, linux-kernel@vger.kernel.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Wed, 18 Oct 2006, Paul Mackerras wrote: > Since this is a virtualized system there is every possibility that the > memory we get won't be divided into nodes in the nice neat manner you > seem to be expecting. It just depends on what memory the hypervisor > has free, and on what nodes, when the partition is booted. The only expectation is that memory is available on the node that you are bootstrapping the slab allocator from. > In other words, the assumption that node pfn ranges won't overlap is > completely untenable for us. That does not matter for this problem., > Linus' tree is currently broken for us. Any suggestions for how to > fix it, since I am not very familiar with the NUMA code? Have memory available for slab boot strap on node 0? Or modify the boot code in such a way that it runs on node 1 or any other node that has memory available.