From mboxrd@z Thu Jan 1 00:00:00 1970 Received: with ECARTIS (v1.0.0; list linux-mips); Fri, 02 Apr 2010 17:04:03 +0200 (CEST) Received: from alius.ayous.org ([78.46.213.165]:33636 "EHLO alius.ayous.org" rhost-flags-OK-OK-OK-OK) by eddie.linux-mips.org with ESMTP id S1491892Ab0DBPD6 (ORCPT ); Fri, 2 Apr 2010 17:03:58 +0200 Received: from eos.turmzimmer.net ([2001:a60:f006:aba::1]) by alius.turmzimmer.net with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.69) (envelope-from ) id 1NxiG8-0004JD-WA; Fri, 02 Apr 2010 14:54:11 +0000 Received: from aba by eos.turmzimmer.net with local (Exim 4.69) (envelope-from ) id 1NxiG1-00052Y-Fa; Fri, 02 Apr 2010 16:54:01 +0200 Date: Fri, 2 Apr 2010 16:54:01 +0200 From: Andreas Barth To: Wu Zhangjin Cc: Ralf Baechle , linux-mips@linux-mips.org Subject: Re: [PATCH v3 1/3] Loongson-2F: Flush the branch target history such as BTB and RAS Message-ID: <20100402145401.GS27216@mails.so.argh.org> References: <05e2ba2596f23fa4dda64d63ce2480504b1be4ac.1268453720.git.wuzhangjin@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <05e2ba2596f23fa4dda64d63ce2480504b1be4ac.1268453720.git.wuzhangjin@gmail.com> X-Editor: Vim http://www.vim.org/ User-Agent: Mutt/1.5.18 (2008-05-17) Return-Path: X-Envelope-To: <"|/home/ecartis/ecartis -s linux-mips"> (uid 0) X-Orcpt: rfc822;linux-mips@linux-mips.org Original-Recipient: rfc822;linux-mips@linux-mips.org X-archive-position: 26342 X-ecartis-version: Ecartis v1.0.0 Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org X-original-sender: aba@not.so.argh.org Precedence: bulk X-list: linux-mips * Wu Zhangjin (wuzhangjin@gmail.com) [100313 05:45]: > This patch did clear BTB(branch target buffer), forbid RAS(return > address stack) via Loongson-2F's 64bit diagnostic register. Unfortunatly the Loongson 2F here still fails with this patch, compiled with the new binutils and both options enabled. Testcase: plain debian unstable chroot, build binutils in that chroot. More ideas, codes, whatever welcome. Andi