From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS, USER_AGENT_MUTT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B8BF5C10F0E for ; Thu, 18 Apr 2019 12:32:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 84DED21479 for ; Thu, 18 Apr 2019 12:32:21 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=alien8.de header.i=@alien8.de header.b="Y3HtzUk7" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388658AbfDRMcU (ORCPT ); Thu, 18 Apr 2019 08:32:20 -0400 Received: from mail.skyhub.de ([5.9.137.197]:44738 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730682AbfDRMcT (ORCPT ); Thu, 18 Apr 2019 08:32:19 -0400 Received: from zn.tnic (p200300EC2F112E003868EF36058F9C84.dip0.t-ipconnect.de [IPv6:2003:ec:2f11:2e00:3868:ef36:58f:9c84]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.skyhub.de (SuperMail on ZX Spectrum 128k) with ESMTPSA id EA3DD1EC0380; Thu, 18 Apr 2019 14:32:17 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=dkim; t=1555590738; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:in-reply-to:in-reply-to: references:references; bh=4rvzXhVII5DOqNioO9bElCvDnQGTxutajqxzUua7Xbk=; b=Y3HtzUk7hfgdTOKAs/fcgMIheHvUXIOWSE4YDH9BUbm8S8UwY8VKdOuPC4EIBZpNyn5X/r 14AeEMa6JQzdBGsCNbbaEMgV6KjK+7t226FjgceQVo8M1Sw+pWQCw2YPfbNGAzQe0oq929 D3Y59eYIJW0x5y71RfncQOiW1OUHwnM= Date: Thu, 18 Apr 2019 14:32:16 +0200 From: Borislav Petkov To: Pingfan Liu Cc: x86@kernel.org, Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , Baoquan He , Will Deacon , Nicolas Pitre , Vivek Goyal , Chao Fan , "Kirill A. Shutemov" , Ard Biesheuvel , Hari Bathini , LKML Subject: Re: [PATCH v4 2/2] x86/boot/KASLR: skip the specified crashkernel region Message-ID: <20190418123216.GG27160@zn.tnic> References: <1554703115-15299-1-git-send-email-kernelfans@gmail.com> <1554703115-15299-3-git-send-email-kernelfans@gmail.com> <20190416190128.GL31772@zn.tnic> <20190417160618.GG20492@zn.tnic> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Apr 18, 2019 at 03:56:09PM +0800, Pingfan Liu wrote: > Then in my case, either no @offset or invalid argument will keep > "*crash_base = 0", and KASLR does not care about either of them. Ok. > It is not elegant. Will try a separate patch to fix it firstly. That's appreciated, thanks. It is about time that whole kexec/kaslr/... code gets some much needed cleaning up and streamlining. -- Regards/Gruss, Boris. Good mailing practices for 400: avoid top-posting and trim the reply.