From owner-cvs-src@FreeBSD.ORG Sun Jun 6 01:12:35 2004 Return-Path: Delivered-To: cvs-src@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 5DE1616A4CE; Sun, 6 Jun 2004 01:12:35 -0700 (PDT) Received: from salmon.maths.tcd.ie (salmon.maths.tcd.ie [134.226.81.11]) by mx1.FreeBSD.org (Postfix) with SMTP id 2479C43D2F; Sun, 6 Jun 2004 01:12:34 -0700 (PDT) (envelope-from dwmalone@maths.tcd.ie) Received: from walton.maths.tcd.ie by salmon.maths.tcd.ie with SMTP id ; 6 Jun 2004 09:12:22 +0100 (BST) Date: Sun, 6 Jun 2004 09:12:21 +0100 From: David Malone To: David Schultz Message-ID: <20040606081221.GA11314@walton.maths.tcd.ie> References: <200406050313.i553Dd3q070600@repoman.freebsd.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200406050313.i553Dd3q070600@repoman.freebsd.org> User-Agent: Mutt/1.5.3i Sender: dwmalone@maths.tcd.ie cc: cvs-src@FreeBSD.org cc: src-committers@FreeBSD.org cc: cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/amd64/amd64 fpu.c X-BeenThere: cvs-src@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: CVS commit messages for the src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 06 Jun 2004 08:12:35 -0000 On Fri, Jun 04, 2004 at 08:13:39PM -0700, David Schultz wrote: > Modified files: > sys/amd64/amd64 fpu.c > Log: > Initialize the MXCSR to the appropriate default value at startup. This seems to result in a "Fault trap 1: privileged instrustion fault while in the kernel" while executing the ldmscsr instruction. If I comment it out, everything works fine again. > Tested on: tjr This must be a situation where testing on humans is bad ;-) David.