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Mon, 29 Jun 2020 09:02:38 -0400 X-MC-Unique: gUkfve_3M3qoeuyEa2k3FA-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 8C13B1017E01; Mon, 29 Jun 2020 13:02:36 +0000 (UTC) Received: from [10.36.114.157] (ovpn-114-157.ams2.redhat.com [10.36.114.157]) by smtp.corp.redhat.com (Postfix) with ESMTP id CCB009CFF2; Mon, 29 Jun 2020 13:02:32 +0000 (UTC) Subject: Re: [PATCH RFC 2/2] s390/mm: don't set ARCH_KEEP_MEMBLOCK To: Heiko Carstens Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-s390@vger.kernel.org, Vasily Gorbik , Christian Borntraeger , Philipp Rudo , Michael Holzheu References: <20200417150151.17239-1-david@redhat.com> <20200417150151.17239-3-david@redhat.com> <20200626163215.GA4268@osiris> <20200629124432.GE4468@osiris> From: David Hildenbrand Autocrypt: addr=david@redhat.com; prefer-encrypt=mutual; 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Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.8.0 MIME-Version: 1.0 In-Reply-To: <20200629124432.GE4468@osiris> Content-Type: text/plain; charset=utf-8 Content-Language: en-US X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 X-Rspamd-Queue-Id: 872163DA32 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam05 Content-Transfer-Encoding: quoted-printable 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 29.06.20 14:44, Heiko Carstens wrote: > On Fri, Jun 26, 2020 at 06:32:15PM +0200, Heiko Carstens wrote: >> 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! >=20 > Hmm, this triggers: Ah, I see, will have a look. Weird I didn't notice that ... Thanks! --=20 Thanks, David / dhildenb