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=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED autolearn=ham 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 4B6DBECDFB8 for ; Tue, 24 Jul 2018 09:23:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0963D20852 for ; Tue, 24 Jul 2018 09:23:22 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0963D20852 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.ibm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388434AbeGXK2w (ORCPT ); Tue, 24 Jul 2018 06:28:52 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:53802 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388236AbeGXK2u (ORCPT ); Tue, 24 Jul 2018 06:28:50 -0400 Received: from pps.filterd (m0098410.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id w6O9Ja0T029987 for ; Tue, 24 Jul 2018 05:23:18 -0400 Received: from e06smtp03.uk.ibm.com (e06smtp03.uk.ibm.com [195.75.94.99]) by mx0a-001b2d01.pphosted.com with ESMTP id 2kdydypge3-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Tue, 24 Jul 2018 05:23:17 -0400 Received: from localhost by e06smtp03.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Tue, 24 Jul 2018 10:23:14 +0100 Received: from b06cxnps3075.portsmouth.uk.ibm.com (9.149.109.195) by e06smtp03.uk.ibm.com (192.168.101.133) with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Tue, 24 Jul 2018 10:23:08 +0100 Received: from d06av25.portsmouth.uk.ibm.com (d06av25.portsmouth.uk.ibm.com [9.149.105.61]) by b06cxnps3075.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id w6O9N7Oq31981570 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Tue, 24 Jul 2018 09:23:07 GMT Received: from d06av25.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 2037411C050; Tue, 24 Jul 2018 12:23:22 +0100 (BST) Received: from d06av25.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 90BA511C052; Tue, 24 Jul 2018 12:23:21 +0100 (BST) Received: from ThinkPad (unknown [9.152.212.29]) by d06av25.portsmouth.uk.ibm.com (Postfix) with ESMTP; Tue, 24 Jul 2018 12:23:21 +0100 (BST) Date: Tue, 24 Jul 2018 11:23:06 +0200 From: Philipp Rudo To: AKASHI Takahiro Cc: catalin.marinas@arm.com, will.deacon@arm.com, dhowells@redhat.com, vgoyal@redhat.com, herbert@gondor.apana.org.au, davem@davemloft.net, dyoung@redhat.com, bhe@redhat.com, arnd@arndb.de, schwidefsky@de.ibm.com, heiko.carstens@de.ibm.com, ard.biesheuvel@linaro.org, bhsharma@redhat.com, kexec@lists.infradead.org, linux-kernel@vger.kernel.org, james.morse@arm.com, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH v12 03/16] s390, kexec_file: drop arch_kexec_mem_walk() In-Reply-To: <20180724065759.19186-4-takahiro.akashi@linaro.org> References: <20180724065759.19186-1-takahiro.akashi@linaro.org> <20180724065759.19186-4-takahiro.akashi@linaro.org> Organization: IBM X-Mailer: Claws Mail 3.13.2 (GTK+ 2.24.30; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-TM-AS-GCONF: 00 x-cbid: 18072409-0012-0000-0000-0000028E0256 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18072409-0013-0000-0000-000020BFE2B2 Message-Id: <20180724112306.299540b5@ThinkPad> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2018-07-24_03:,, 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=1011 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1806210000 definitions=main-1807240099 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi AKASHI, the patch looks good to me. Reviewed-by: Philipp Rudo Thanks Philipp On Tue, 24 Jul 2018 15:57:46 +0900 AKASHI Takahiro wrote: > Since s390 already knows where to locate buffers, calling > arch_kexec_mem_walk() has no sense. So we can just drop it as kbuf->mem > indicates this while all other architectures sets it to 0 initially. > > This change is a preparatory work for the next patch, where all the > variant memory walks, either on system resource or memblock, will be > put in one common place so that it will satisfy all the architectures' > need. > > Signed-off-by: AKASHI Takahiro > Cc: Martin Schwidefsky > Cc: Heiko Carstens > Cc: Dave Young > Cc: Vivek Goyal > Cc: Baoquan He > --- > arch/s390/kernel/machine_kexec_file.c | 10 ---------- > kernel/kexec_file.c | 4 ++++ > 2 files changed, 4 insertions(+), 10 deletions(-) > > diff --git a/arch/s390/kernel/machine_kexec_file.c b/arch/s390/kernel/machine_kexec_file.c > index f413f57f8d20..32023b4f9dc0 100644 > --- a/arch/s390/kernel/machine_kexec_file.c > +++ b/arch/s390/kernel/machine_kexec_file.c > @@ -134,16 +134,6 @@ int kexec_file_add_initrd(struct kimage *image, struct s390_load_data *data, > return ret; > } > > -/* > - * The kernel is loaded to a fixed location. Turn off kexec_locate_mem_hole > - * and provide kbuf->mem by hand. > - */ > -int arch_kexec_walk_mem(struct kexec_buf *kbuf, > - int (*func)(struct resource *, void *)) > -{ > - return 1; > -} > - > int arch_kexec_apply_relocations_add(struct purgatory_info *pi, > Elf_Shdr *section, > const Elf_Shdr *relsec, > diff --git a/kernel/kexec_file.c b/kernel/kexec_file.c > index 63c7ce1c0c3e..bf39df5e5bb9 100644 > --- a/kernel/kexec_file.c > +++ b/kernel/kexec_file.c > @@ -534,6 +534,10 @@ int kexec_locate_mem_hole(struct kexec_buf *kbuf) > { > int ret; > > + /* Arch knows where to place */ > + if (kbuf->mem) > + return 0; > + > ret = arch_kexec_walk_mem(kbuf, locate_mem_hole_callback); > > return ret == 1 ? 0 : -EADDRNOTAVAIL;