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=-7.0 required=3.0 tests=BAYES_00, 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 AC859C433DF for ; Thu, 16 Jul 2020 00:35:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 881CD20714 for ; Thu, 16 Jul 2020 00:35:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726960AbgGPAf1 (ORCPT ); Wed, 15 Jul 2020 20:35:27 -0400 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:48868 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726479AbgGPAf0 (ORCPT ); Wed, 15 Jul 2020 20:35:26 -0400 Received: from pps.filterd (m0098419.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 06G0WP27006018; Wed, 15 Jul 2020 20:35:17 -0400 Received: from pps.reinject (localhost [127.0.0.1]) by mx0b-001b2d01.pphosted.com with ESMTP id 329r1jcupq-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 15 Jul 2020 20:35:16 -0400 Received: from m0098419.ppops.net (m0098419.ppops.net [127.0.0.1]) by pps.reinject (8.16.0.36/8.16.0.36) with SMTP id 06G0WQg3006534; Wed, 15 Jul 2020 20:35:16 -0400 Received: from ppma03wdc.us.ibm.com (ba.79.3fa9.ip4.static.sl-reverse.com [169.63.121.186]) by mx0b-001b2d01.pphosted.com with ESMTP id 329r1jcupe-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 15 Jul 2020 20:35:16 -0400 Received: from pps.filterd (ppma03wdc.us.ibm.com [127.0.0.1]) by ppma03wdc.us.ibm.com (8.16.0.42/8.16.0.42) with SMTP id 06G0KJoq015981; Thu, 16 Jul 2020 00:35:15 GMT Received: from b03cxnp07028.gho.boulder.ibm.com (b03cxnp07028.gho.boulder.ibm.com [9.17.130.15]) by ppma03wdc.us.ibm.com with ESMTP id 327529cswp-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 16 Jul 2020 00:35:15 +0000 Received: from b03ledav004.gho.boulder.ibm.com (b03ledav004.gho.boulder.ibm.com [9.17.130.235]) by b03cxnp07028.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 06G0ZEiA46334458 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 16 Jul 2020 00:35:14 GMT Received: from b03ledav004.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 454917805F; Thu, 16 Jul 2020 00:35:14 +0000 (GMT) Received: from b03ledav004.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id C2BE87805E; Thu, 16 Jul 2020 00:35:10 +0000 (GMT) Received: from morokweng.localdomain (unknown [9.163.73.114]) by b03ledav004.gho.boulder.ibm.com (Postfix) with ESMTPS; Thu, 16 Jul 2020 00:35:10 +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 21:35:07 -0300 Message-ID: <87zh808fgk.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 clxscore=1015 malwarescore=0 priorityscore=1501 spamscore=0 mlxlogscore=999 lowpriorityscore=0 impostorscore=0 adultscore=0 mlxscore=0 bulkscore=0 phishscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2006250000 definitions=main-2007150175 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hari Bathini writes: > To avoid any weird errors, the purgatory should run with its own > stack. Set one up by adding the stack buffer to .data section of > the purgatory. Also, setup opal base & entry values in r8 & r9 > registers to help early OPAL debugging. > > Signed-off-by: Hari Bathini > Tested-by: Pingfan Liu Reviewed-by: Thiago Jung Bauermann > --- > > v2 -> v3: > * Unchanged. Added Tested-by tag from Pingfan. > > v1 -> v2: > * Setting up opal base & entry values in r8 & r9 for early OPAL debug. > > > arch/powerpc/include/asm/kexec.h | 4 ++++ > arch/powerpc/kexec/file_load_64.c | 29 +++++++++++++++++++++++++++++ > arch/powerpc/purgatory/trampoline_64.S | 32 ++++++++++++++++++++++++++++++++ > 3 files changed, 65 insertions(+) > -- Thiago Jung Bauermann IBM Linux Technology Center