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Fri, 21 Aug 2026 10:56:23 +0000 (GMT) Received: from li-4f5ba44c-27d4-11b2-a85c-a08f5b49eada.bl1-in.ibm.com (unknown [9.123.14.142]) by smtpav05.fra02v.mail.ibm.com (Postfix) with ESMTP; Fri, 21 Aug 2026 10:56:23 +0000 (GMT) From: Sourabh Jain To: linuxppc-dev@lists.ozlabs.org Cc: Sourabh Jain , Aditya Gupta , Alexander Graf , Andrew Morton , Baoquan He , "Christophe Leroy (CS GROUP)" , Hari Bathini , Madhavan Srinivasan , Mahesh Salgaonkar , Michael Ellerman , Mike Rapoport , Nicholas Piggin , Pasha Tatashin , Pratyush Yadav , "Ritesh Harjani (IBM)" , Shivang Upadhyay , Shrikanth Hegde , kexec@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [RFC PATCH 1/3] kernel/liveupdate: make KEXEC_HANDOVER depend on KEXEC_FILE instead of selecting it Date: Fri, 21 Aug 2026 16:26:07 +0530 Message-ID: <20260821105609.983622-2-sourabhjain@linux.ibm.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260821105609.983622-1-sourabhjain@linux.ibm.com> References: <20260821105609.983622-1-sourabhjain@linux.ibm.com> X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-Reinject: loops=2 maxloops=12 X-Authority-Analysis: v=2.4 cv=LsCiDHdc c=1 sm=1 tr=0 ts=6a882ee1 cx=c_pps a=aDMHemPKRhS1OARIsFnwRA==:117 a=aDMHemPKRhS1OARIsFnwRA==:17 a=Sv0fKeRqtYgA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=iQ6ETzBq9ecOQQE5vZCe:22 a=VnNF1IyMAAAA:8 a=vggBfdFIAAAA:8 a=Z4Rwk6OoAAAA:8 a=VwQbUJbxAAAA:8 a=pGLkceISAAAA:8 a=7ipKWUHlAAAA:8 a=JfrnYn6hAAAA:8 a=5OYvgd8MYfw_dG5BkvsA:9 a=HkZW87K1Qel5hWWM3VKY:22 a=gpc5p9EgBqZVLdJeV_V1:22 a=1CNFftbPRP8L7MoqJWF3:22 X-Proofpoint-GUID: o_KV_bRHIEGLMkQUap5i1_BlkNENhfwD X-Proofpoint-Spam-Info: AW1haW4tMjYwODIxMDA3OCBTYWx0ZWRfX8C6Quuj8XWiU 4pbtE6tO/Hgb+FxqSQkmEmtdttSaRBTEpB+FnhHKtk8VEzSkr3+jE8pubWMgBBHrzn9u3Payfqp 8bg9tORBK8L7mLKbQnot6jO7JJvNUBE= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODIxMDA3OCBTYWx0ZWRfX1W9BB/IIRIvx b+5BFb9eH4JzySwUadzpeKr7Qe+qchyiRYCr4a3maQb3xp9YxFS46p36epYIyZX7Jmz0pPV/fdY wPHjJ8d2VFTKSaBsi+EjLF1kwYW7BjOFtgL7FhSTVOt7hP1d6gVYeE+f2yrttIlls3l5MKVBT+z eEzgVvlRpRrheI6Eqb910sghw+8V8f0yvAzz/d7SUYKPYQ1DVfd5o5wTJo7cnyrU5RXQH6+Fft9 oDbPL9yql2fh0iFds1GK+HdxpZ0aPCw1OKXcPycN4m8ZFdibF01UfJhIFngKyHbDkw07QNJTbhP i3ifpE5y8nyFhA6c1pDvXJPdPlPqeH464HwRB93fW51ilmQ8GYmWn8onwkNKW1V+1J5oEj5FvTy vcLAQUh9fIHUv1eZ7CuLNKDv7F9DtbpsaCergSmzu/on5WHLh+PnUr0tHqdPy6qJXTwpYkUjNOa 9BHqWqnPmJh+utOvURw== X-Proofpoint-ORIG-GUID: oEWcB5d1hCVRSp223fOiL4UW7kSjJyqC X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-08-21_03,2026-08-21_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 spamscore=0 priorityscore=1501 lowpriorityscore=0 bulkscore=0 adultscore=0 suspectscore=0 impostorscore=0 clxscore=1011 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2608210078 X-Spam-Status: No, score=-0.7 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, RCVD_IN_DNSWL_LOW,RCVD_IN_MSPIKE_H4,RCVD_IN_MSPIKE_WL,SPF_HELO_NONE, SPF_PASS autolearn=disabled version=4.0.1 OzLabs 8 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-25) on lists.ozlabs.org An upcoming patch makes ARCH_SUPPORTS_KEXEC_HANDOVER depend on CRASH_DUMP on powerpc: config ARCH_SUPPORTS_KEXEC_HANDOVER def_bool y depends on PPC64 depends on !CRASH_DUMP That triggers a recursive dependency error: error: recursive dependency detected! symbol KEXEC_HANDOVER depends on ARCH_SUPPORTS_KEXEC_HANDOVER symbol ARCH_SUPPORTS_KEXEC_HANDOVER depends on CRASH_DUMP symbol CRASH_DUMP depends on KEXEC_CORE symbol KEXEC_CORE is selected by KEXEC_FILE symbol KEXEC_FILE is selected by KEXEC_HANDOVER KEXEC_HANDOVER and KEXEC_CORE end up depending on each other when ARCH_SUPPORTS_KEXEC_HANDOVER depends on CRASH_DUMP. This creates a recursive Kconfig dependency. Change KEXEC_FILE from select to depends on to break this cycle. This means KEXEC_FILE must be enabled explicitly instead of being enabled automatically by KEXEC_HANDOVER. Keep this change until the powerpc-specific KHO and CRASH_DUMP dependency is resolved. Cc: Aditya Gupta Cc: Alexander Graf Cc: Andrew Morton Cc: Baoquan He Cc: Christophe Leroy (CS GROUP) Cc: Hari Bathini Cc: Madhavan Srinivasan Cc: Mahesh Salgaonkar Cc: Michael Ellerman Cc: Mike Rapoport Cc: Nicholas Piggin Cc: Pasha Tatashin Cc: Pratyush Yadav Cc: Ritesh Harjani (IBM) Cc: Shivang Upadhyay Cc: Shrikanth Hegde Cc: kexec@lists.infradead.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Sourabh Jain --- kernel/liveupdate/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/liveupdate/Kconfig b/kernel/liveupdate/Kconfig index c13af38ba23a..22e317dc1e1a 100644 --- a/kernel/liveupdate/Kconfig +++ b/kernel/liveupdate/Kconfig @@ -6,7 +6,7 @@ config KEXEC_HANDOVER bool "kexec handover" depends on ARCH_SUPPORTS_KEXEC_HANDOVER && ARCH_SUPPORTS_KEXEC_FILE select MEMBLOCK_KHO_SCRATCH - select KEXEC_FILE + depends on KEXEC_FILE select LIBFDT select CMA help