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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Wed, 14 Aug 2019 18:15:09 +0100 Received: from d06av21.portsmouth.uk.ibm.com (d06av21.portsmouth.uk.ibm.com [9.149.105.232]) by b06cxnps3075.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x7EHF8Na42664148 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 14 Aug 2019 17:15:08 GMT Received: from d06av21.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 1BF1C52054; Wed, 14 Aug 2019 17:15:08 +0000 (GMT) Received: from in.ibm.com (unknown [9.199.55.108]) by d06av21.portsmouth.uk.ibm.com (Postfix) with ESMTPS id 4081652057; Wed, 14 Aug 2019 17:15:06 +0000 (GMT) Date: Wed, 14 Aug 2019 22:45:03 +0530 From: Mahesh J Salgaonkar To: Hari Bathini Subject: Re: [PATCH v4 18/25] powernv/fadump: process architected register state data provided by firmware References: <156327668777.27462.5297279227799429100.stgit@hbathini.in.ibm.com> <156327684839.27462.10598087583845179638.stgit@hbathini.in.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <156327684839.27462.10598087583845179638.stgit@hbathini.in.ibm.com> User-Agent: NeoMutt/20180716 X-TM-AS-GCONF: 00 x-cbid: 19081417-0012-0000-0000-0000033ECCF4 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19081417-0013-0000-0000-00002178E153 Message-Id: <20190814171503.6mpm2r63ildemyyz@in.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2019-08-14_06:, , 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=8.0.1-1906280000 definitions=main-1908140158 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: mahesh@linux.vnet.ibm.com Cc: Ananth N Mavinakayanahalli , Mahesh J Salgaonkar , Nicholas Piggin , linuxppc-dev , Oliver , Vasant Hegde , Stewart Smith , Daniel Axtens Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On 2019-07-16 17:04:08 Tue, Hari Bathini wrote: > From: Hari Bathini > > Firmware provides architected register state data at the time of crash. > Process this data and build CPU notes to append to ELF core. > > Signed-off-by: Hari Bathini > Signed-off-by: Vasant Hegde > --- > arch/powerpc/kernel/fadump-common.h | 4 + > arch/powerpc/platforms/powernv/opal-fadump.c | 197 ++++++++++++++++++++++++-- > arch/powerpc/platforms/powernv/opal-fadump.h | 39 +++++ > 3 files changed, 228 insertions(+), 12 deletions(-) > [...] > @@ -430,6 +577,32 @@ int __init opal_fadump_dt_scan(struct fw_dump *fadump_conf, ulong node) > return 1; > } > > + ret = opal_mpipl_query_tag(OPAL_MPIPL_TAG_CPU, &addr); > + if ((ret != OPAL_SUCCESS) || !addr) { > + pr_err("Failed to get CPU metadata (%lld)\n", ret); > + return 1; > + } > + > + addr = be64_to_cpu(addr); > + pr_debug("CPU metadata addr: %llx\n", addr); > + > + opal_cpu_metadata = __va(addr); > + r_opal_cpu_metadata = (void *)addr; > + fadump_conf->cpu_state_data_version = > + be32_to_cpu(r_opal_cpu_metadata->cpu_data_version); > + if (fadump_conf->cpu_state_data_version != > + HDAT_FADUMP_CPU_DATA_VERSION) { > + pr_err("CPU data format version (%lu) mismatch!\n", > + fadump_conf->cpu_state_data_version); > + return 1; > + } > + fadump_conf->cpu_state_entry_size = > + be32_to_cpu(r_opal_cpu_metadata->cpu_data_size); > + fadump_conf->cpu_state_destination_addr = > + be64_to_cpu(r_opal_cpu_metadata->region[0].dest); > + fadump_conf->cpu_state_data_size = > + be64_to_cpu(r_opal_cpu_metadata->region[0].size); > + opal_fadump_dt_scan isn't the right place to do this. Can you please move above cpu related data processing to opal_fadump_build_cpu_notes() ? Thanks, -Mahesh. > pr_info("Firmware-assisted dump is active.\n"); > fadump_conf->dump_active = 1; > opal_fadump_get_config(fadump_conf, r_opal_fdm_active);