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=-4.0 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,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 EF189C433DF for ; Thu, 16 Jul 2020 01:40:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CE8FA2078C for ; Thu, 16 Jul 2020 01:40:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727119AbgGPBkj (ORCPT ); Wed, 15 Jul 2020 21:40:39 -0400 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:11228 "EHLO mx0b-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726785AbgGPBkj (ORCPT ); Wed, 15 Jul 2020 21:40:39 -0400 Received: from pps.filterd (m0127361.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 06G1VSFp114462; 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Thu, 16 Jul 2020 01:40:23 +0000 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 06G1eMnm53608770 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 16 Jul 2020 01:40:22 GMT Received: from b01ledav005.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 80A69AE05F; Thu, 16 Jul 2020 01:40:22 +0000 (GMT) Received: from b01ledav005.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 70051AE05C; Thu, 16 Jul 2020 01:40:18 +0000 (GMT) Received: from morokweng.localdomain (unknown [9.163.73.114]) by b01ledav005.gho.pok.ibm.com (Postfix) with ESMTPS; Thu, 16 Jul 2020 01:40:18 +0000 (GMT) References: <159466074408.24747.10036072269371204890.stgit@hbathini.in.ibm.com> <159466095278.24747.9161591016931052627.stgit@hbathini.in.ibm.com> User-agent: mu4e 1.2.0; emacs 26.3 From: Thiago Jung Bauermann To: Hari Bathini Cc: Michael Ellerman , Andrew Morton , Pingfan Liu , Kexec-ml , Mimi Zohar , Nayna Jain , Petr Tesarik , Mahesh J Salgaonkar , Sourabh Jain , lkml , linuxppc-dev , Eric Biederman , Dave Young , Vivek Goyal Subject: Re: [PATCH v3 08/12] ppc64/kexec_file: setup the stack for purgatory In-reply-to: <159466095278.24747.9161591016931052627.stgit@hbathini.in.ibm.com> Date: Wed, 15 Jul 2020 22:40:13 -0300 Message-ID: <87wo348cg2.fsf@morokweng.localdomain> MIME-Version: 1.0 Content-Type: text/plain X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.235,18.0.687 definitions=2020-07-15_12:2020-07-15,2020-07-15 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 malwarescore=0 spamscore=0 priorityscore=1501 clxscore=1015 mlxlogscore=999 suspectscore=0 phishscore=0 bulkscore=0 impostorscore=0 mlxscore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2006250000 definitions=main-2007160005 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Sorry, forgot to send one comment for this patch: Hari Bathini writes: > @@ -898,10 +900,37 @@ int setup_purgatory_ppc64(struct kimage *image, const void *slave_code, > goto out; > } > > + /* Setup the stack top */ > + stack_buf = kexec_purgatory_get_symbol_addr(image, "stack_buf"); > + if (!stack_buf) > + goto out; > + > + val = (u64)stack_buf + KEXEC_PURGATORY_STACK_SIZE; > + ret = kexec_purgatory_get_set_symbol(image, "stack", &val, sizeof(val), > + false); > + if (ret) > + goto out; > + > /* Setup the TOC pointer */ > val = get_toc_ptr(&(image->purgatory_info)); > ret = kexec_purgatory_get_set_symbol(image, "my_toc", &val, sizeof(val), > false); > + if (ret) > + goto out; > + > + /* Setup OPAL base & entry values */ > + dn = of_find_node_by_path("/ibm,opal"); > + if (dn) { > + of_property_read_u64(dn, "opal-base-address", &val); > + ret = kexec_purgatory_get_set_symbol(image, "opal_base", &val, > + sizeof(val), false); > + if (ret) > + goto out; > + > + of_property_read_u64(dn, "opal-entry-address", &val); > + ret = kexec_purgatory_get_set_symbol(image, "opal_entry", &val, > + sizeof(val), false); You need to call of_node_put(dn) here and in the if (ret) case above. > + } > out: > if (ret) > pr_err("Failed to setup purgatory symbols"); -- Thiago Jung Bauermann IBM Linux Technology Center