From mboxrd@z Thu Jan 1 00:00:00 1970 From: Theodore Ts'o Subject: Re: Userspace ACPI interpreter ( was RE: [RFC] dev_acpi: support for userspace access to acpi) Date: Thu, 28 Oct 2004 11:24:04 -0400 Sender: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Message-ID: <20041028152404.GB7902@thunk.org> References: <3ACA40606221794F80A5670F0AF15F84041ABFFA@pdsmsx403> <418085B0.30208@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <418085B0.30208-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org> Errors-To: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , List-Archive: To: Len Brown Cc: "Yu, Luming" , Bjorn Helgaas , "Moore, Robert" , Alex Williamson , linux-kernel , acpi-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Id: linux-acpi@vger.kernel.org On Thu, Oct 28, 2004 at 01:37:52AM -0400, Len Brown wrote: > One way to experiment with a user-mode ACPI interpreter would be to > continue to use the kernel-mode interpreter for boot up , and cut over > to the user-mode interpreter at /sbin/init. The kernel-mode interpreter > could be sent the way of free_initmem() which is called just before > /sbin/init is invoked. Is there a significant advantage to doing having a user-mode ACPI interpreter? The only advantage I can think of is that the ACPI interpreter could now live in pageable memory. Are there any others? - Ted ------------------------------------------------------- This Newsletter Sponsored by: Macrovision For reliable Linux application installations, use the industry's leading setup authoring tool, InstallShield X. Learn more and evaluate today. http://clk.atdmt.com/MSI/go/ins0030000001msi/direct/01/ From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261736AbUJ1P1a (ORCPT ); Thu, 28 Oct 2004 11:27:30 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261171AbUJ1PYp (ORCPT ); Thu, 28 Oct 2004 11:24:45 -0400 Received: from THUNK.ORG ([69.25.196.29]:31175 "EHLO thunker.thunk.org") by vger.kernel.org with ESMTP id S261715AbUJ1PYU (ORCPT ); Thu, 28 Oct 2004 11:24:20 -0400 Date: Thu, 28 Oct 2004 11:24:04 -0400 From: "Theodore Ts'o" To: Len Brown Cc: "Yu, Luming" , Bjorn Helgaas , "Moore, Robert" , Alex Williamson , linux-kernel , acpi-devel@lists.sourceforge.net Subject: Re: Userspace ACPI interpreter ( was RE: [ACPI] [RFC] dev_acpi: support for userspace access to acpi) Message-ID: <20041028152404.GB7902@thunk.org> Mail-Followup-To: Theodore Ts'o , Len Brown , "Yu, Luming" , Bjorn Helgaas , "Moore, Robert" , Alex Williamson , linux-kernel , acpi-devel@lists.sourceforge.net References: <3ACA40606221794F80A5670F0AF15F84041ABFFA@pdsmsx403> <418085B0.30208@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <418085B0.30208@intel.com> User-Agent: Mutt/1.5.6+20040907i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Oct 28, 2004 at 01:37:52AM -0400, Len Brown wrote: > One way to experiment with a user-mode ACPI interpreter would be to > continue to use the kernel-mode interpreter for boot up , and cut over > to the user-mode interpreter at /sbin/init. The kernel-mode interpreter > could be sent the way of free_initmem() which is called just before > /sbin/init is invoked. Is there a significant advantage to doing having a user-mode ACPI interpreter? The only advantage I can think of is that the ACPI interpreter could now live in pageable memory. Are there any others? - Ted