Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
From:   Eric DeVolder <eric.devolder@oracle.com>
To:     linux@armlinux.org.uk, catalin.marinas@arm.com, will@kernel.org,
        chenhuacai@kernel.org, geert@linux-m68k.org,
        tsbogend@alpha.franken.de, James.Bottomley@HansenPartnership.com,
        deller@gmx.de, ysato@users.sourceforge.jp, dalias@libc.org,
        glaubitz@physik.fu-berlin.de, tglx@linutronix.de, mingo@redhat.com,
        bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org,
        linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        linux-ia64@vger.kernel.org, loongarch@lists.linux.dev,
        linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org,
        linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
        linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org,
        linux-sh@vger.kernel.org
Cc:     kernel@xen0n.name, mpe@ellerman.id.au, npiggin@gmail.com,
        christophe.leroy@csgroup.eu, paul.walmsley@sifive.com,
        palmer@dabbelt.com, aou@eecs.berkeley.edu, hca@linux.ibm.com,
        gor@linux.ibm.com, agordeev@linux.ibm.com,
        borntraeger@linux.ibm.com, svens@linux.ibm.com, hpa@zytor.com,
        keescook@chromium.org, paulmck@kernel.org, peterz@infradead.org,
        frederic@kernel.org, akpm@linux-foundation.org, ardb@kernel.org,
        samitolvanen@google.com, juerg.haefliger@canonical.com,
        arnd@arndb.de, rmk+kernel@armlinux.org.uk,
        linus.walleij@linaro.org, sebastian.reichel@collabora.com,
        rppt@kernel.org, kirill.shutemov@linux.intel.com,
        anshuman.khandual@arm.com, ziy@nvidia.com, masahiroy@kernel.org,
        ndesaulniers@google.com, mhiramat@kernel.org, ojeda@kernel.org,
        thunder.leizhen@huawei.com, xin3.li@intel.com, tj@kernel.org,
        gregkh@linuxfoundation.org, tsi@tuyoix.net, bhe@redhat.com,
        hbathini@linux.ibm.com, sourabhjain@linux.ibm.com,
        eric.devolder@oracle.com, boris.ostrovsky@oracle.com,
        konrad.wilk@oracle.com
Subject: [PATCH v5 03/13] arm/kexec: refactor for kernel/Kconfig.kexec
Date:   Thu,  6 Jul 2023 18:20:17 -0400
Message-Id: <20230706222027.189117-4-eric.devolder@oracle.com>
In-Reply-To: <20230706222027.189117-1-eric.devolder@oracle.com>
References: <20230706222027.189117-1-eric.devolder@oracle.com>
Content-Transfer-Encoding: 8bit
Content-Type: text/plain
MIME-Version: 1.0
X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1
X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?LOMN/H0XNQ4Og+0ew8PbTBeXSkZl78Wit5oLC4LBITSVboCIc3LeUvQS7Zov?=
 =?us-ascii?Q?2c1q5GRcWbTvU6H7fxa9Fm0fBxBlNg7VhummZm9srJO9J9AHp+tqBNKxX+PP?=
 =?us-ascii?Q?9a7CJ0AUr9NLNnz/0slIULpnyTH39v4Y8hb9ejG3B56tZdN68B31Wa2milQD?=
 =?us-ascii?Q?S7F43XMLy0R8oqAL2jMaEBeaded2SxOyesZYLpYzYbR3A2EQhZjqw1E0cxRL?=
 =?us-ascii?Q?LX8MFWJCjNnRCUN02G1OBURE5WKJx+Q406/oDMAExNyHsyXihJlt0NEl0CJ/?=
 =?us-ascii?Q?0i5UugCa/Fbf6znl9Els479TawQXU7aiW8gI4nCWiabvQYuuFHAI2BIFkA8k?=
 =?us-ascii?Q?J7Zy7igxcuGlNCZZEQ5vJjBx4eNn+CPsWtm2WWeQcMA0c1LR9gR2qlrZgeww?=
 =?us-ascii?Q?g06K0/RV/49JWWDN+DQhhho8gl9gB/RjxYC2MEgre++Q5dZwer5mQXYS/eGy?=
 =?us-ascii?Q?7IdhwXuTHvhLLhkYIDDvZYgTsW8wpVJMGpDtEIuymgw6HR/fjXQ1T0pF+zp0?=
 =?us-ascii?Q?FCcu/bPf9nfPc6t97QBZZusowPkrKine7FMGU6piChbXk5VCgumpDMoDSFC4?=
 =?us-ascii?Q?bOUZIAwTj+2Cc1lqQdb/gE/YSOu0yT7nL0hmppkzDCjkXMHl1YwzSNOASFyg?=
 =?us-ascii?Q?5Dza7ElNQ+TgmaCvIQMu5FbJxYf2K18gHPmUpyK/b7E6Rdia6Jw9ox9g5nen?=
 =?us-ascii?Q?iEeTq0qL3nBXMJBY96WTxCQsuVLHd2IWhjKkR2Ytm3LEj2qDLYBBUw7iXQnq?=
 =?us-ascii?Q?XWbufh9QGEdCABOiuZqlmrbwQNX1Od0IVbNDrZf7FxPZKlcoDVf1cQcpJWNB?=
 =?us-ascii?Q?XeUVAHgECz/jtAezeinUryTMKYPfIsJ0VtL03PBUtecdCUnIwoF2PEn6iKbQ?=
 =?us-ascii?Q?ecPFNlEh7n12L7vLRYZwGFeWn30DUZCc/U7HnVH9zonE8H7zZDlNNSMW9fny?=
 =?us-ascii?Q?0EKfFQVxOdaXmxj0aESL/yPYz/HrOD7ul0GoFjLDqqrBfX0estLAj38xsZ7a?=
 =?us-ascii?Q?EGEu6mTGkms7jC9Z6Sp4q5XvyjzNJ/VAvQGmCnhOFjJNuysJIXX7FxKloM4m?=
 =?us-ascii?Q?Jxf42erl4l7oIOth0TXqWdPExj5/6+gawfzL/gaIFpfYFu9id9c9e8nQrK3Y?=
 =?us-ascii?Q?tGLsNEt28SU8EI3ms5gto/vO/aaSoq3FSdypXzCIvcrWYpbzGRLT0ICT9AOE?=
 =?us-ascii?Q?DoSGHStI+ivt3wploRhxKPAClavam48+23gIC3VgfAfeywg0c+89B3BHC/eG?=
 =?us-ascii?Q?dvHKJxOfFjQfmdBj5b2VFi0Kn3kSxkwoEXF3P3epZuQ8qcEO7iBuqPDrjXCb?=
 =?us-ascii?Q?ZEu/IWNlUm7+yuJyYeykE2v+A5yQZBg3Km3A0ZyMBf172oa647lthuJZJ1yd?=
 =?us-ascii?Q?6BMe8FZ4PqRlPJD+fmSTAam8//tBq9m+MFGJZRnYb19tzsy4nzL0hFjcS1pL?=
 =?us-ascii?Q?5t9UfcYcNiBRyQd1BRKymArFpP1ZysMxu+Z5tR8Kz7rZkfm8KUfPc39Jv9iN?=
 =?us-ascii?Q?wOx12luaNwq9Z1vK401Mx+UOh0fhtrXkIvcQd8suHuwa1AFUhfBGR3nZxxAq?=
 =?us-ascii?Q?FrNvP3HIPvroLdbglkrwcmu8miLyJX9c4QjyCzFSWS4meGPrLYQgLsJjfVx2?=
 =?us-ascii?Q?hQ=3D=3D?=
X-MS-Exchange-AntiSpam-ExternalHop-MessageData-ChunkCount: 2
X-MS-Exchange-AntiSpam-ExternalHop-MessageData-0: =?us-ascii?Q?sYgNpapnRqdGApDgsQnMxlVwz64L9lsmU2HrkK24E+9Z4j0KcEGnkqpQH76d?=
 =?us-ascii?Q?C1ojchZTYjT6YqDVUFyYt7LfSgZEAsOALqK7jvJMygU4FPybuvqa4w+77FZ2?=
 =?us-ascii?Q?+Kn5/jOIhIYVdPZbDfZzSz3AjwwtG2GsUacx8fDm9q55Al1e07V7TlR8tBZs?=
 =?us-ascii?Q?QWgqFdsmk7WrWiKfCLmwqTDlLhja8yN1e6DOCvy/Baci24xStk/CcFTo9v9F?=
 =?us-ascii?Q?oNKaBoQ4D3wQnDgy92Co0eO3qqFU05NcahRDPxmYoW2N7V7g5OYlePs1PNTH?=
 =?us-ascii?Q?abX3oWShzuHTfDp8TxdxytsIVS7cB3a9+cX6zjgqP1FIIAugSuZISr+xFV5c?=
 =?us-ascii?Q?moTAH5n/zESBXAHXZQSNwXIZSLVOH23Oksav6HXwBvV7VXp7nlbaRyZvu3Hg?=
 =?us-ascii?Q?4Uqf/nZOX0I31gEBQ5/g+bUrxAZ8PKA5jYNLWlon1aIpoOGtTloyz2q0JVP4?=
 =?us-ascii?Q?Pw5dkx3n3ItUv+sxMsjKFpY5GqZblHBmshR/HU6RjPLHjyQ5HAXh7tDv/m4b?=
 =?us-ascii?Q?rn96OssUK3SLlybUchPrTrIWKJmccxj08WHU1yHkLxXLD7bLF1n0TmRN6wMt?=
 =?us-ascii?Q?j9w1Ro2FsGp09/YgaNWlw5nWalqiG0btOh6a+7flpnb0U5Z7jgtGD8wAlOPj?=
 =?us-ascii?Q?mmLfBpzu4UEWLKQIZE7DqrjE+unOtaq5EMUuaSdTSRzazh3Ky674O2QbR8Mz?=
 =?us-ascii?Q?/weZ8ZTLZFR3n/MWdMZ/Q6cnbvjDM9O5eSsKOW/8kkTtV4iAlFxwsjCpTGLl?=
 =?us-ascii?Q?PHSbIekmcezcpcWjE9DBcoOZGUwG/sT5kQhQDwOlwZRg7+Z7Rl9d50F2lIBR?=
 =?us-ascii?Q?AUjG1yxHcsQFQunH8vvx6391ccPO0HTVv4CP1rWfLxDuoGdMQKk8vdUsvZNp?=
 =?us-ascii?Q?KB3+upNDhKOWJvqEubhker82CuI2On5IEPoL2C8kwLZvxvLLU4CPo/YHBf/9?=
 =?us-ascii?Q?xVyrRGQZSy5z2dSX3GQnNgjQTUG64y9XSs8RMKcQQoV52gNlwOJ4gVeSE9Zy?=
 =?us-ascii?Q?LFuBU02JLfbRbHnKSXwGwWjyiwqRdkmoX3k6alzR+XE8coKgV3yzit994Esh?=
 =?us-ascii?Q?vdVLEY/BfjbKJ5CPMAxj/X1vChfrn9cZIqqhe+nRPMnTN7ua2DkBf9Wem1V+?=
 =?us-ascii?Q?k8DYOpPrlQpGGnxqD7T7KGOhDKHRhAELxY96nfFbFT6iUqYDscz82KYFtYXb?=
 =?us-ascii?Q?XQ049PMZJ+FKxBrH8SJ/1yPIfXIDOI5OZ4tlnJK2o4bax/SWji/qs2q0Awvh?=
 =?us-ascii?Q?o3Gd3Lc8NSWP0ioCJor5gfCdKTIZDuvvSPZBPVWhbkRg21J2O7Rhb6SOttVt?=
 =?us-ascii?Q?cgBxtRMGG8S2xPvsSZfsgttbvDVNYaz10qZS11Fj54fiLVlS1HbqJGV+fPAH?=
 =?us-ascii?Q?o8VctRQY5SrUUm0CyEK3NmsOGe1aVZqnV6A1nkky9ehfkvwfUQkIGOpZwPzN?=
 =?us-ascii?Q?DxJzq3TuxbJ+CW7nYKgZqHygmQP3yBrH/o7IHPugldRaEM9skHMkpWzorNQW?=
 =?us-ascii?Q?2mXMWiFpd6ZjKh9dq6ic9oXBH9LwDcf3Fx1+DsPAW6bL/h1Oysc0nlEAwePs?=
 =?us-ascii?Q?9+bhfbqua3yqNMTGxxPTOmC6SmebaJ+4CRsCArsKrIUdihs5uZPDpAUWy8qK?=
 =?us-ascii?Q?EQlYMkgPXqzP/3jGKOYLxE+Dc8+2N7u4QPQRTOym2JVDDfih2Lk8UncIWH3r?=
 =?us-ascii?Q?APKsJubhHGNgOLdkBbT9xU4B8A92LoacWXtaq6Zp6ob0PcQekYiiX1pooS5f?=
 =?us-ascii?Q?T21/ykZogvmT7aNCYNylXm49wPuZa3xEbfCmpquOaXavP1sIPzx3RUvzpTcg?=
X-MS-Exchange-AntiSpam-ExternalHop-MessageData-1: Jnhz2QqK1XVieQkaAqEMN9UNoYJriQY3Ax7H/uD9h3PRiKo1vVQ4jCr61Pe94/880lefd7ZpISSgn+34DzhKzmAGKALbI3VTGe4H5KLvrJBUeoj61QOArcTernySWxUz1QbdksdDLb4fqj0gocbKErIGMrz7K7QnOvBmIpZAnNmP51FZDIAAStxu5LpDP4FZIhTuN5eVHlvpqZ0vK7o0zqwinzg9OjmNI0wkfyZXfax559DbZKujIM8LzqlXf81yBCWCCieYMNIz2rEjWo8FOCh8zf2f8u+4IujRTJ0V2G13gHe/UWCJTOrFfejzGfOfq0g5Ajp9S61svaYR3ai1oi8NXZURCRTfUXDjo1K/bl+bETqpH5CPNP2k/a0uHMU6+CAYaiMaO1kQPLiaH6HzVDTyuvXx6N0WfX+rxu8ao0SpEkNoIh46t2VvipauSF6uo+j/yDpVQyF7Yg==
X-OriginatorOrg: oracle.com
X-MS-Exchange-CrossTenant-Network-Message-Id: 976e0b88-23e7-401f-27e8-08db7e6f40a1
X-MS-Exchange-CrossTenant-AuthSource: CO1PR10MB4531.namprd10.prod.outlook.com
X-MS-Exchange-CrossTenant-AuthAs: Internal
X-MS-Exchange-CrossTenant-OriginalArrivalTime: 06 Jul 2023 22:20:49.5032
 (UTC)
X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted
X-MS-Exchange-CrossTenant-Id: 4e2c6054-71cb-48f1-bd6c-3a9705aca71b
X-MS-Exchange-CrossTenant-MailboxType: HOSTED
X-MS-Exchange-CrossTenant-UserPrincipalName: 7lIW7vX4jia03JK3FjRure0pp1x8aj3CLEVmS9XVo08/JNwuH/lFeb4QGoDIthM07oVmrnrR2bS6vmCQSLQKx5PrSiehBbD3ktaF9rZ/89Y=
X-MS-Exchange-Transport-CrossTenantHeadersStamped: CO1PR10MB4755
X-Proofpoint-Virus-Version: vendor=baseguard
 engine=ICAP:2.0.254,Aquarius:18.0.957,Hydra:6.0.591,FMLib:17.11.176.26
 definitions=2023-07-06_15,2023-07-06_02,2023-05-22_02
X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=0 phishscore=0 bulkscore=0
 malwarescore=0 mlxlogscore=999 adultscore=0 spamscore=0 mlxscore=0
 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2305260000
 definitions=main-2307060195
X-Proofpoint-GUID: MRNAJFvCSBlRTvDTIhXA2ombHc5qVMw-
X-Proofpoint-ORIG-GUID: MRNAJFvCSBlRTvDTIhXA2ombHc5qVMw-
X-Spam-Status: No, score=-2.8 required=5.0 tests=BAYES_00,DKIM_SIGNED,
        DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_LOW,
        RCVD_IN_MSPIKE_H5,RCVD_IN_MSPIKE_WL,SPF_HELO_NONE,SPF_NONE,
        T_SCC_BODY_TEXT_LINE autolearn=unavailable autolearn_force=no
        version=3.4.6
X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on
        lindbergh.monkeyblade.net
Precedence: bulk
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

The kexec and crash kernel options are provided in the common
kernel/Kconfig.kexec. Utilize the common options and provide
the ARCH_SUPPORTS_ and ARCH_SELECTS_ entries to recreate the
equivalent set of KEXEC and CRASH options.

Signed-off-by: Eric DeVolder <eric.devolder@oracle.com>
---
 arch/arm/Kconfig | 29 ++++-------------------------
 1 file changed, 4 insertions(+), 25 deletions(-)

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 7a27550ff3c1..1a6a6eb48a15 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1645,20 +1645,8 @@ config XIP_DEFLATED_DATA
 	  copied, saving some precious ROM space. A possible drawback is a
 	  slightly longer boot delay.
 
-config KEXEC
-	bool "Kexec system call (EXPERIMENTAL)"
-	depends on (!SMP || PM_SLEEP_SMP)
-	depends on MMU
-	select KEXEC_CORE
-	help
-	  kexec is a system call that implements the ability to shutdown your
-	  current kernel, and to start another kernel.  It is like a reboot
-	  but it is independent of the system firmware.   And like a reboot
-	  you can start any kernel with it, not just Linux.
-
-	  It is an ongoing process to be certain the hardware in a machine
-	  is properly shutdown, so do not be surprised if this code does not
-	  initially work for you.
+config ARCH_SUPPORTS_KEXEC
+	def_bool (!SMP || PM_SLEEP_SMP) && MMU
 
 config ATAGS_PROC
 	bool "Export atags in procfs"
@@ -1668,17 +1656,8 @@ config ATAGS_PROC
 	  Should the atags used to boot the kernel be exported in an "atags"
 	  file in procfs. Useful with kexec.
 
-config CRASH_DUMP
-	bool "Build kdump crash kernel (EXPERIMENTAL)"
-	help
-	  Generate crash dump after being started by kexec. This should
-	  be normally only set in special crash dump kernels which are
-	  loaded in the main kernel with kexec-tools into a specially
-	  reserved region and then later executed after a crash by
-	  kdump/kexec. The crash dump kernel must be compiled to a
-	  memory address not used by the main kernel
-
-	  For more details see Documentation/admin-guide/kdump/kdump.rst
+config ARCH_SUPPORTS_CRASH_DUMP
+	def_bool y
 
 config AUTO_ZRELADDR
 	bool "Auto calculation of the decompressed kernel image address" if !ARCH_MULTIPLATFORM
-- 
2.31.1