From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261916AbTDXI6e (ORCPT ); Thu, 24 Apr 2003 04:58:34 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261855AbTDXI6e (ORCPT ); Thu, 24 Apr 2003 04:58:34 -0400 Received: from siaab2ab.compuserve.com ([149.174.40.130]:61568 "EHLO siaab2ab.compuserve.com") by vger.kernel.org with ESMTP id S261916AbTDXI6e (ORCPT ); Thu, 24 Apr 2003 04:58:34 -0400 Date: Thu, 24 Apr 2003 05:06:58 -0400 From: Chuck Ebbert <76306.1226@compuserve.com> Subject: Re: [ANNOUNCE] desc.c -- dump the i386 descriptor tables To: William Lee Irwin III Cc: linux-kernel Message-ID: <200304240509_MC3-1-35CF-A2DD@compuserve.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org wli wrote: > Spiffy; this should help debug various things. I forgot to mention: try comparing 2.2, 2.4 and 2.5. Also, this is what I've been using to look at interrupt entry point alignment. On 2.4 for sure, and probably on 2.5 you have a 1-in-8 chance of getting a pathologically badly aligned timer handler on 32-byte cacheline machines every time you compile (IRQ 0 entry address & 0x1f == 0x1c.) OTOH the pagefault handler has come up 8-byte aligned every time but I didn't look at the source to see if it's coded that way. ------ Chuck