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Fri, 26 Jun 2020 16:32:19 +0000 Received: from d06av21.portsmouth.uk.ibm.com (d06av21.portsmouth.uk.ibm.com [9.149.105.232]) by b06avi18878370.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 05QGWG2S64094598 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 26 Jun 2020 16:32:16 GMT Received: from d06av21.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id D106652054; Fri, 26 Jun 2020 16:32:16 +0000 (GMT) Received: from osiris (unknown [9.171.12.243]) by d06av21.portsmouth.uk.ibm.com (Postfix) with ESMTPS id 7125452052; Fri, 26 Jun 2020 16:32:16 +0000 (GMT) Date: Fri, 26 Jun 2020 18:32:15 +0200 From: Heiko Carstens To: David Hildenbrand Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-s390@vger.kernel.org, Vasily Gorbik , Christian Borntraeger , Philipp Rudo , Michael Holzheu Subject: Re: [PATCH RFC 2/2] s390/mm: don't set ARCH_KEEP_MEMBLOCK Message-ID: <20200626163215.GA4268@osiris> References: <20200417150151.17239-1-david@redhat.com> <20200417150151.17239-3-david@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200417150151.17239-3-david@redhat.com> X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.216,18.0.687 definitions=2020-06-26_08:2020-06-26,2020-06-26 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 mlxscore=0 suspectscore=1 mlxlogscore=957 cotscore=-2147483648 clxscore=1015 adultscore=0 malwarescore=0 impostorscore=0 phishscore=0 spamscore=0 lowpriorityscore=0 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2004280000 definitions=main-2006260112 X-Rspamd-Queue-Id: 23A9A1819E772 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam02 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Fri, Apr 17, 2020 at 05:01:51PM +0200, David Hildenbrand wrote: > Commit 50be63450728 ("s390/mm: Convert bootmem to memblock") mentions > "The original bootmem allocator is getting replaced by memblock. To > cover the needs of the s390 kdump implementation the physical > memory list is used." > > zcore was converted to use resources instead of memblocks. > memblock_discard() will *not* mess with "physmem", only with "memory" and > "reserved" memblocks. So, that data will stay after early boot, to be > used in arch/s390/kernel/crash_dump.c to create the ELF header from > inside the 2nd (a.k.a. dumping) kernel. > > We no longer need ARCH_KEEP_MEMBLOCK. > > Cc: Heiko Carstens > Cc: Vasily Gorbik > Cc: Christian Borntraeger > Cc: Philipp Rudo > Cc: Michael Holzheu > Signed-off-by: David Hildenbrand > --- > arch/s390/Kconfig | 1 - > 1 file changed, 1 deletion(-) Applied, thanks!