From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from puffin.external.hp.com (puffin.external.hp.com [192.25.206.4]) by dsl2.external.hp.com (Postfix) with ESMTP id 352A74844 for ; Sun, 7 Oct 2001 21:52:41 -0600 (MDT) Message-Id: <200110080348.VAA24289@puffin.external.hp.com> To: Matthew Wilcox Cc: Thomas Marteau , "parisc-linux@parisc-linux.org" Subject: Re: [parisc-linux] Second Draft of the help for the kernel options In-Reply-To: Message from Matthew Wilcox of "Mon, 08 Oct 2001 00:31:47 BST." <20011008003147.A6105@parcelfarce.linux.theplanet.co.uk> Date: Sun, 07 Oct 2001 21:48:47 -0600 From: Grant Grundler List-ID: Matthew Wilcox wrote: > 32-bit PDC > CONFIG_PDC_NARROW > Turning this option on enables support for 32-bit firmware when running > a 64-bit kernel. You should select this option if you have a machine > from the C160-J2240 era. s/machine/workstation/ I'm pretty sure all 64-bit capable servers properly handle PDC calls in wide mode. PAT PDC supports a few calls in narrow mode (for boot loader) but the rest must be in wide mode. Note that IODC generally requires narrow mode. (Superdome IODC is different - but I don't recall exactly how). BTW, I prefer Matthew's rewrite over the Thomas' proposal. No offense intended thomas - thanks for submitting the original. grant