Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261168AbTIZAEi (ORCPT ); Thu, 25 Sep 2003 20:04:38 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261722AbTIZAEi (ORCPT ); Thu, 25 Sep 2003 20:04:38 -0400 Received: from parcelfarce.linux.theplanet.co.uk ([195.92.249.252]:59807 "EHLO www.linux.org.uk") by vger.kernel.org with ESMTP id S261168AbTIZAEg (ORCPT ); Thu, 25 Sep 2003 20:04:36 -0400 Message-ID: <3F738288.5060304@pobox.com> Date: Thu, 25 Sep 2003 20:04:24 -0400 From: Jeff Garzik User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4) Gecko/20030703 X-Accept-Language: en-us, en MIME-Version: 1.0 To: marcelo@parcelfarce.linux.theplanet.co.uk CC: "Brown, Len" , Marcelo Tosatti , linux-kernel@vger.kernel.org, Alan Cox , "Nakajima, Jun" Subject: Re: HT not working by default since 2.4.22 References: In-Reply-To: Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1371 Lines: 44 marcelo@parcelfarce.linux.theplanet.co.uk wrote: > On Wed, 24 Sep 2003, Brown, Len wrote: > > >>Okay, so what to do? >> >>We could make 2.4.23 like 2.4.21 where ACPI code for HT is included in >>the kernel even when CONFIG_ACPI is not set. >> >>Or we could leave 2.4.23 like 2.4.22 where disabling CONFIG_ACPI really >>does remove all ACPI code in the kernel; and when CONFIG_ACPI is set, >>CONFIG_ACPI_HT_ONLY is available to limit ACPI to just the tables part >>needed for HT. > > > CONFIG_ACPI_HT should be not dependant on CONFIG_ACPI. So > > 1) Please make it very clear on the configuration that for HT > CONFIG_ACPI_HT_ONLY is needed > 2) Move it outside CONFIG_ACPI. > > OK? Unfortunately CONFIG_ACPI_HT_ONLY outside and independent of CONFIG_ACPI proved a bit confusing. How about the more simple CONFIG_HYPERTHREAD or CONFIG_HT? If enabled and CONFIG_SMP is set, then we will attempt to discover HT via ACPI tables, regardless of CONFIG_ACPI value. Or... (I know multiple people will shoot me for saying this) we could resurrect acpitable.[ch], and build that when CONFIG_ACPI is disabled. Jeff - 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/