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=-3.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS autolearn=no 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 62BCFC7618F for ; Fri, 19 Jul 2019 15:47:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 462BE21872 for ; Fri, 19 Jul 2019 15:47:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730390AbfGSPrV convert rfc822-to-8bit (ORCPT ); Fri, 19 Jul 2019 11:47:21 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:64536 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728443AbfGSPrU (ORCPT ); Fri, 19 Jul 2019 11:47:20 -0400 Received: from pps.filterd (m0098394.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x6JFkgG5006110 for ; Fri, 19 Jul 2019 11:47:19 -0400 Received: from e16.ny.us.ibm.com (e16.ny.us.ibm.com [129.33.205.206]) by mx0a-001b2d01.pphosted.com with ESMTP id 2tug36t4h0-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Fri, 19 Jul 2019 11:47:19 -0400 Received: from localhost by e16.ny.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Fri, 19 Jul 2019 16:47:12 +0100 Received: from b01ledav005.gho.pok.ibm.com (b01ledav005.gho.pok.ibm.com [9.57.199.110]) by b01cxnp23033.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x6JFlBQD50725154 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 19 Jul 2019 15:47:11 GMT Received: from b01ledav005.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id D8EBAAE05C; Fri, 19 Jul 2019 15:47:11 +0000 (GMT) Received: from b01ledav005.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 8ABCAAE05F; Fri, 19 Jul 2019 15:47:07 +0000 (GMT) Received: from morokweng.localdomain (unknown [9.85.190.209]) by b01ledav005.gho.pok.ibm.com (Postfix) with ESMTPS; Fri, 19 Jul 2019 15:47:07 +0000 (GMT) References: <20190718032858.28744-1-bauerman@linux.ibm.com> <20190718032858.28744-6-bauerman@linux.ibm.com> <4a07bf75-b516-c81b-da7a-4b323e6d7e52@amd.com> User-agent: mu4e 1.2.0; emacs 26.2 From: Thiago Jung Bauermann To: lijiang Cc: "Lendacky\, Thomas" , "x86\@kernel.org" , "iommu\@lists.linux-foundation.org" , "linux-fsdevel\@vger.kernel.org" , "linuxppc-dev\@lists.ozlabs.org" , "linux-s390\@vger.kernel.org" , "linux-kernel\@vger.kernel.org" , Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H. Peter Anvin" , Christoph Hellwig , Marek Szyprowski , Robin Murphy , Konrad Rzeszutek Wilk , Alexey Dobriyan , Halil Pasic , Mike Anderson , Ram Pai , Baoquan He Subject: Re: [PATCH v3 5/6] fs/core/vmcore: Move sev_active() reference to x86 arch code In-reply-to: Date: Fri, 19 Jul 2019 12:47:03 -0300 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8BIT X-TM-AS-GCONF: 00 x-cbid: 19071915-0072-0000-0000-0000044B1EEB X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00011457; HX=3.00000242; KW=3.00000007; PH=3.00000004; SC=3.00000287; SDB=6.01234458; UDB=6.00650541; IPR=6.01015790; MB=3.00027801; MTD=3.00000008; XFM=3.00000015; UTC=2019-07-19 15:47:17 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19071915-0073-0000-0000-00004CBB738B Message-Id: <87h87igh6w.fsf@morokweng.localdomain> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-07-19_11:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1907190172 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello Lianbo, lijiang writes: > 在 2019年07月19日 01:47, Lendacky, Thomas 写道: >> On 7/17/19 10:28 PM, Thiago Jung Bauermann wrote: >>> Secure Encrypted Virtualization is an x86-specific feature, so it shouldn't >>> appear in generic kernel code because it forces non-x86 architectures to >>> define the sev_active() function, which doesn't make a lot of sense. >>> >>> To solve this problem, add an x86 elfcorehdr_read() function to override >>> the generic weak implementation. To do that, it's necessary to make >>> read_from_oldmem() public so that it can be used outside of vmcore.c. >>> >>> Also, remove the export for sev_active() since it's only used in files that >>> won't be built as modules. >>> >>> Signed-off-by: Thiago Jung Bauermann >> >> Adding Lianbo and Baoquan, who recently worked on this, for their review. >> > > This change looks good to me. > > Reviewed-by: Lianbo Jiang Thanks for your review! -- Thiago Jung Bauermann IBM Linux Technology Center