From owner-freebsd-ia64@FreeBSD.ORG Wed May 12 16:28:28 2004 Return-Path: Delivered-To: freebsd-ia64@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 6589116A4CE for ; Wed, 12 May 2004 16:28:28 -0700 (PDT) Received: from ns1.xcllnt.net (209-128-86-226.bayarea.net [209.128.86.226]) by mx1.FreeBSD.org (Postfix) with ESMTP id 1A93443D39 for ; Wed, 12 May 2004 16:28:28 -0700 (PDT) (envelope-from marcel@xcllnt.net) Received: from ns1.xcllnt.net (localhost [127.0.0.1]) by ns1.xcllnt.net (8.12.11/8.12.11) with ESMTP id i4CNSRm8045495; Wed, 12 May 2004 16:28:27 -0700 (PDT) (envelope-from marcel@ns1.xcllnt.net) Received: (from marcel@localhost) by ns1.xcllnt.net (8.12.11/8.12.11/Submit) id i4CNSR9S045494; Wed, 12 May 2004 16:28:27 -0700 (PDT) (envelope-from marcel) Date: Wed, 12 May 2004 16:28:27 -0700 From: Marcel Moolenaar To: Arun Sharma Message-ID: <20040512232827.GB45389@ns1.xcllnt.net> References: <40A2A0A2.8040004@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <40A2A0A2.8040004@intel.com> User-Agent: Mutt/1.5.5.1i cc: freebsd-ia64@freebsd.org Subject: Re: invala X-BeenThere: freebsd-ia64@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Porting FreeBSD to the IA-64 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 12 May 2004 23:28:28 -0000 On Wed, May 12, 2004 at 03:09:38PM -0700, Arun Sharma wrote: > > I noticed that the code in exception.S:TRAP() doesn't invalidate the ALAT > on a register backing store switch. This could be a problem if the kernel > starts using data speculation (say by using a different compiler). However, > restorectx is doing the right thing by using invala. Why would this be a problem? -- Marcel Moolenaar USPA: A-39004 marcel@xcllnt.net