Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 28 Feb 2002 14:16:31 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 28 Feb 2002 14:15:34 -0500 Received: from tstac.esa.lanl.gov ([128.165.46.3]:33215 "EHLO tstac.esa.lanl.gov") by vger.kernel.org with ESMTP id ; Thu, 28 Feb 2002 14:14:43 -0500 Message-Id: <200202281827.LAA26782@tstac.esa.lanl.gov> Content-Type: text/plain; charset=US-ASCII From: Steven Cole Reply-To: elenstev@mesatop.com To: Ingo Molnar Subject: [PATCH] 2.5.5-dj2, modify arch/i386/Config.help for highpte options. Date: Thu, 28 Feb 2002 12:12:51 -0700 X-Mailer: KMail [version 1.3.1] Cc: linux-kernel@vger.kernel.org, Dave Jones MIME-Version: 1.0 Content-Transfer-Encoding: 7BIT Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org This patch modifies the help text for the CONFIG_NOHIGHMEM option in arch/i386/Config.help to explain the two new options; CONFIG_HIGHMEM4G_HIGHPTE and CONFIG_HIGHMEM64G_HIGHPTE. Since this is a choice selection, the help text for the first option, CONFIG_NOHIGHMEM is the only one which is visible using the current configurators. Here is a snippet from arch/i386/config.in both 2.5.5-dj2 and 2.5.6-pre1: choice 'High Memory Support' \ "off CONFIG_NOHIGHMEM \ 4GB CONFIG_HIGHMEM4G \ 4GB-highpte CONFIG_HIGHMEM4G_HIGHPTE \ 64GB CONFIG_HIGHMEM64G \ 64GB-highpte CONFIG_HIGHMEM64G_HIGHPTE" off If the notes for the highpte options are incorrect, feel free to provide a better explanation. Steven --- linux-2.5.5-dj2/arch/i386/Config.help.orig Thu Feb 28 10:58:01 2002 +++ linux-2.5.5-dj2/arch/i386/Config.help Thu Feb 28 11:52:43 2002 @@ -111,13 +111,21 @@ possible. If the machine has between 1 and 4 Gigabytes physical RAM, then - answer "4GB" here. + answer "4GB" or "4GB-highpte" here. The "4GB-highpte" option + will put user-space page table entries into high memory. + + If the machine has more than 4 Gigabytes physical RAM, then + answer "64GB" or "64GB-highpte" here. The "64GB-highpte" option + will put user-space page table entries into high memory. + + Selecting either "64GB" or "64GB-highpte" turns Intel PAE + (Physical Address Extension) mode on. - If more than 4 Gigabytes is used then answer "64GB" here. This - selection turns Intel PAE (Physical Address Extension) mode on. PAE implements 3-level paging on IA32 processors. PAE is fully supported by Linux, PAE mode is implemented on all recent Intel - processors (Pentium Pro and better). NOTE: If you say "64GB" here, + processors (Pentium Pro and better). + + NOTE: If you say "64GB" or "64GB-highpte" here, then the kernel will not boot on CPUs that don't support PAE! The actual amount of total physical memory will either be - 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/