From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 27 Sep 2001 19:14:03 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 27 Sep 2001 19:13:53 -0400 Received: from harpo.it.uu.se ([130.238.12.34]:63182 "EHLO harpo.it.uu.se") by vger.kernel.org with ESMTP id ; Thu, 27 Sep 2001 19:13:37 -0400 Date: Fri, 28 Sep 2001 01:13:50 +0200 (MET DST) From: Mikael Pettersson Message-Id: <200109272313.BAA16620@harpo.it.uu.se> To: bgerst@didntduck.org Subject: Re: [PATCH] Cleanup f00f bug code Cc: linux-kernel@vger.kernel.org, torvalds@transmeta.com Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 26 Sep 2001 21:52:09 -0400, Brian Gerst wrote: >This patch changes the f00f bug workaround code to use a fixed mapping >instead of touching the page tables directly. It also removes the >assumption that only 686's don't have the bug. It has been tested for >normal operation of the relocated IDT, but I don't have a processor with >the bug to do a real test. Could someone with such a processor please >verify that the workaround still works? It doesn't. 2.4.9-ac16 + your patch booted ok on my P5MMX, and the kernel printed that it applied the F0 0F workaround, but executing F0 0F C7 C8 in user-space caused an instant lockup. /Mikael