From owner-freebsd-threads@FreeBSD.ORG Fri Jun 20 04:00:33 2003 Return-Path: Delivered-To: freebsd-threads@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 70E6137B40A for ; Fri, 20 Jun 2003 04:00:33 -0700 (PDT) Received: from park.rambler.ru (park.rambler.ru [81.19.64.101]) by mx1.FreeBSD.org (Postfix) with ESMTP id 2683C43F75 for ; Fri, 20 Jun 2003 04:00:27 -0700 (PDT) (envelope-from is@rambler-co.ru) Received: from is.park.rambler.ru (is.park.rambler.ru [81.19.64.102]) by park.rambler.ru (8.12.6/8.12.6) with ESMTP id h5KB0KmF046357; Fri, 20 Jun 2003 15:00:20 +0400 (MSD) Date: Fri, 20 Jun 2003 15:00:20 +0400 (MSD) From: Igor Sysoev X-Sender: is@is To: threads@freebsd.org In-Reply-To: <3EF2B952.64E731F9@mindspring.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Subject: Re: Implementing TLS: step 1 X-BeenThere: freebsd-threads@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Threading on FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 20 Jun 2003 11:00:34 -0000 On Fri, 20 Jun 2003, Terry Lambert wrote: > Julian Elischer wrote: > > The big cost is that a processin x86 can only have a limited number of > > segments set up in teh Local descriptor table (LDT). > > I forget the actual number but i vaguely remember that it is 16383 or > > 8191 or something. > > 65536, but it includes the recursive mapping and the call trap, etc., > so it's reall 65531. LDT can have 8192 descriptors. GDT can have 8191 usefull descriptors. The first descriptor is null one. Igor Sysoev http://sysoev.ru/en/