Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755943AbZFIAEt (ORCPT ); Mon, 8 Jun 2009 20:04:49 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753923AbZFIAEl (ORCPT ); Mon, 8 Jun 2009 20:04:41 -0400 Received: from mail.vyatta.com ([76.74.103.46]:35720 "EHLO mail.vyatta.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753128AbZFIAEk (ORCPT ); Mon, 8 Jun 2009 20:04:40 -0400 Date: Mon, 8 Jun 2009 17:04:37 -0700 From: Stephen Hemminger To: Dan Williams , Rusty Russell Cc: "Rafael J. Wysocki" , Linux Kernel Mailing List , Kernel Testers List Subject: Re: [Bug #13116] Can't boot with nosmp Message-ID: <20090608170437.1c2386a5@nehalam> In-Reply-To: References: <20090608091544.53a94235@nehalam> Organization: Vyatta X-Mailer: Claws Mail 3.6.1 (GTK+ 2.16.1; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 568 Lines: 12 I did some more debugging, and the problem appears to be that booting with nosmp still leaves all the CPU's present in the cpu possible mask. So code like dma engine (or loopback device), that use alloc_percpu get broken. Not sure why all the cpu's are still showing up in the possible mask. Rusty? do you have an answer. -- 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/