Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751223AbVLHVz3 (ORCPT ); Thu, 8 Dec 2005 16:55:29 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751226AbVLHVz2 (ORCPT ); Thu, 8 Dec 2005 16:55:28 -0500 Received: from serv01.siteground.net ([70.85.91.68]:23687 "EHLO serv01.siteground.net") by vger.kernel.org with ESMTP id S1751223AbVLHVz2 (ORCPT ); Thu, 8 Dec 2005 16:55:28 -0500 Date: Thu, 8 Dec 2005 13:55:14 -0800 From: Ravikiran G Thirumalai To: Andi Kleen Cc: Andrew Morton , linux-kernel@vger.kernel.org, discuss@x86-64.org, zach@vmware.com, shai@scalex86.org, nippung@calsoftinc.com Subject: Re: [discuss] [patch] x86_64: align and pad x86_64 GDT on page boundary Message-ID: <20051208215514.GE3776@localhost.localdomain> References: <20051208194232.GC3776@localhost.localdomain> <20051208201518.GN11190@wotan.suse.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20051208201518.GN11190@wotan.suse.de> User-Agent: Mutt/1.4.2.1i X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - serv01.siteground.net X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [0 0] / [47 12] X-AntiAbuse: Sender Address Domain - scalex86.org X-Source: X-Source-Args: X-Source-Dir: Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 832 Lines: 23 On Thu, Dec 08, 2005 at 09:15:18PM +0100, Andi Kleen wrote: > On Thu, Dec 08, 2005 at 11:42:32AM -0800, Ravikiran G Thirumalai wrote: > > > > - .align L1_CACHE_BYTES > > + /* zero the remaining page */ > > + .fill PAGE_SIZE / 8 - GDT_ENTRIES,8,0 > > + > > ENTRY(idt_table) > > Why can't the IDT not be shared with the GDT page? It should be mostly > read only right and putting r-o data on that page should be ok, right? Yes, you are right. This should not have been a problem. Some people reported this symbol (cpu_gdt) though. Will have to go back and check. Thanks, Kiran - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/