From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964981AbVJ0HvW (ORCPT ); Thu, 27 Oct 2005 03:51:22 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S964983AbVJ0HvW (ORCPT ); Thu, 27 Oct 2005 03:51:22 -0400 Received: from mx1.suse.de ([195.135.220.2]:49560 "EHLO mx1.suse.de") by vger.kernel.org with ESMTP id S964981AbVJ0HvW (ORCPT ); Thu, 27 Oct 2005 03:51:22 -0400 From: Andi Kleen To: Magnus Damm Subject: Re: [discuss] [rfc] x86_64: Kconfig changes for NUMA Date: Thu, 27 Oct 2005 09:50:12 +0200 User-Agent: KMail/1.8 Cc: discuss@x86-64.org, Ravikiran G Thirumalai , linux-kernel@vger.kernel.org, "Shai Fultheim (Shai@scalex86.org)" References: <20051026070956.GA3561@localhost.localdomain> In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200510270950.13268.ak@suse.de> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thursday 27 October 2005 08:25, Magnus Damm wrote: > > While at it, could you please consider to remove the SMP dependency > > from NUMA_EMU? 2.6.14-rc5-git5 builds and works with !SMP and No. > > NUMA_EMU. > > > > Why? > > 1. No need to force SMP when not needed. > > 2. qemu-system-x86_64 does not currently work with SMP kernels. qemu needs to be fixed then. > Update: > > Both CONFIG_NUMA_EMU and CONFIG_K8_NUMA build and run just fine > without CONFIG_SMP. Not sure about CONFIG_ACPI_NUMA though. I don't want too many weird combinations which no normal person uses like this. Undoubtedly there will be compile breakage for such stuff in the future (even if it happens to work by chance now) and best is to not open this can of worms in the first place. The number of variants has to be kept under control. -And