From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Fri, 25 May 2001 03:00:29 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Fri, 25 May 2001 03:00:19 -0400 Received: from sgi.SGI.COM ([192.48.153.1]:33405 "EHLO sgi.com") by vger.kernel.org with ESMTP id ; Fri, 25 May 2001 03:00:04 -0400 X-Mailer: exmh version 2.1.1 10/15/1999 From: Keith Owens To: esr@thyrsus.com cc: CML2 , kbuild-devel@lists.sourceforge.net Subject: Re: Configure.help entries wanted In-Reply-To: Your message of "Fri, 25 May 2001 02:35:58 -0400." <20010525023558.B5622@thyrsus.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Fri, 25 May 2001 16:59:24 +1000 Message-ID: <24758.990773964@kao2.melbourne.sgi.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 25 May 2001 02:35:58 -0400, "Eric S. Raymond" wrote: >Keith Owens : >> +McKinley A-step specific code >> +CONFIG_MCKINLEY_ASTEP_SPECIFIC >> + Select this option to build a kernel for an IA64 McKinley system >> + with any A-stepping CPU. >> + >> +McKinley A0/A1-step specific code >> +CONFIG_MCKINLEY_A0_SPECIFIC >> + Select this option to build a kernel for an IA64 McKinley system >> + with an A0 or A1 stepping CPU. > >Is there a value range in /proc/cpuinfo that tells you you have an A/A0 step? Unfortunately I do not have the McKinley data yet, the NDA is worse than the Itanium one. Fill in later when the data is available, I expect more McKinley steppings to be added to the list. >> +CONFIG_IA64_DEBUG_CMPXCHG >> + Selecting this option turns on bug checking for the IA64 >> + compare-and-exchange instructions. This is slow! If you're unsure, >> + select N. > >These would be much improved by some indication of what IA64 variants or mask >steppings have these problems. Early ones for compare-and-exchange. AFAIK no recent (Itanium B3 or later) cpu has these problems. >> +IA64 IRQ bug checking >> +CONFIG_IA64_DEBUG_IRQ >> + Selecting this option turns on bug checking for the IA64 irq_save and >> + restore instructions. This is slow! If you're unsure, select N. This is software, not hardware, debugging. It saves addresses to help track down spinlock problems.