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, 19 Apr 2002 20:01:33 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Fri, 19 Apr 2002 20:01:33 -0400 Received: from terminus.zytor.com ([64.158.222.227]:35038 "EHLO terminus.zytor.com") by vger.kernel.org with ESMTP id ; Fri, 19 Apr 2002 20:01:32 -0400 Message-ID: <1577.131.107.184.92.1019260888.squirrel@www.zytor.com> Date: Fri, 19 Apr 2002 17:01:28 -0700 (PDT) Subject: Re: [PATCH] Re: SSE related security hole From: "H. Peter Anvin" To: In-Reply-To: X-Priority: 3 Importance: Normal X-MSMail-Priority: Normal Cc: , , , , , X-Mailer: SquirrelMail (version 1.2.5) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org > > I get this feeling that Intel screwed up on specifying how to > initialize this whole state. > Indeed. Logically, FNINIT should have been extended to initialize it all - - it is a security hole that it doesn't initialize MMX properly. Alternatively, for SSE only, an INITP instruction could have been added that an SSE-enabled OS can use at the time OSXFSR or whatever that flag is called is set.