Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756403AbZFSWaG (ORCPT ); Fri, 19 Jun 2009 18:30:06 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751797AbZFSW35 (ORCPT ); Fri, 19 Jun 2009 18:29:57 -0400 Received: from gate.crashing.org ([63.228.1.57]:35171 "EHLO gate.crashing.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751324AbZFSW34 (ORCPT ); Fri, 19 Jun 2009 18:29:56 -0400 Subject: Re: [PowerPC] 2.6.30-git14 boot failure with SLAB From: Benjamin Herrenschmidt To: Sachin Sant Cc: linuxppc-dev@ozlabs.org, Pekka Enberg , linux-kernel In-Reply-To: <4A3BC57B.8000408@in.ibm.com> References: <4A3B615F.8090504@in.ibm.com> <4A3BC57B.8000408@in.ibm.com> Content-Type: text/plain Date: Sat, 20 Jun 2009 08:29:40 +1000 Message-Id: <1245450580.16880.12.camel@pasglop> Mime-Version: 1.0 X-Mailer: Evolution 2.26.1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 898 Lines: 24 On Fri, 2009-06-19 at 22:36 +0530, Sachin Sant wrote: > The offending commit seems to be > c868d550115b9ccc0027c67265b9520790f05601. > mm: Move pgtable_cache_init() earlier > > If i revert this commit, the machine boots fine. That is strange. If I revert that commit, I get breakages on machines here. It would be interesting to understand what the problem is here, as we -do- use that kmem cache for allocating page tables, so we do need it initialized that early. (IE, we can't allow vmalloc for example to be called before the page table caches are initialized). This will need more debugging and understanding as to why it hangs. Cheers, Ben. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/