{"id":2232777,"url":"http://patchwork.ozlabs.org/api/1.2/patches/2232777/?format=json","web_url":"http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260505-module-hashes-v5-1-e174a5a49fce@weissschuh.net/","project":{"id":2,"url":"http://patchwork.ozlabs.org/api/1.2/projects/2/?format=json","name":"Linux PPC development","link_name":"linuxppc-dev","list_id":"linuxppc-dev.lists.ozlabs.org","list_email":"linuxppc-dev@lists.ozlabs.org","web_url":"https://github.com/linuxppc/wiki/wiki","scm_url":"https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git","webscm_url":"https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/","list_archive_url":"https://lore.kernel.org/linuxppc-dev/","list_archive_url_format":"https://lore.kernel.org/linuxppc-dev/{}/","commit_url_format":"https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/?id={}"},"msgid":"<20260505-module-hashes-v5-1-e174a5a49fce@weissschuh.net>","list_archive_url":"https://lore.kernel.org/linuxppc-dev/20260505-module-hashes-v5-1-e174a5a49fce@weissschuh.net/","date":"2026-05-05T09:05:05","name":"[v5,01/14] kbuild: generate module BTF based on vmlinux.unstripped","commit_ref":null,"pull_url":null,"state":"handled-elsewhere","archived":false,"hash":"0b2f78c2b46fe02dd9370448c00b89205280d818","submitter":{"id":82751,"url":"http://patchwork.ozlabs.org/api/1.2/people/82751/?format=json","name":"Thomas Weißschuh","email":"linux@weissschuh.net"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260505-module-hashes-v5-1-e174a5a49fce@weissschuh.net/mbox/","series":[{"id":502791,"url":"http://patchwork.ozlabs.org/api/1.2/series/502791/?format=json","web_url":"http://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=502791","date":"2026-05-05T09:05:17","name":"module: Introduce hash-based integrity checking","version":5,"mbox":"http://patchwork.ozlabs.org/series/502791/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2232777/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2232777/checks/","tags":{},"related":[],"headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","linuxppc-dev@lists.ozlabs.org"],"Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=weissschuh.net header.i=@weissschuh.net\n header.a=rsa-sha256 header.s=mail header.b=l1HQpg72;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org\n (client-ip=2404:9400:21b9:f100::1; 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charset=\"utf-8\"","Content-Transfer-Encoding":"8bit","Message-Id":"<20260505-module-hashes-v5-1-e174a5a49fce@weissschuh.net>","References":"<20260505-module-hashes-v5-0-e174a5a49fce@weissschuh.net>","In-Reply-To":"<20260505-module-hashes-v5-0-e174a5a49fce@weissschuh.net>","To":"Alexei Starovoitov ,\n Daniel Borkmann , Andrii Nakryiko ,\n Eduard Zingerman ,\n Kumar Kartikeya Dwivedi ,\n Nathan Chancellor , Nicolas Schier ,\n Arnd Bergmann , Luis Chamberlain ,\n Petr Pavlu , Sami Tolvanen ,\n Daniel Gomez , Paul Moore ,\n James Morris , \"Serge E. Hallyn\" ,\n Jonathan Corbet , Madhavan Srinivasan ,\n Michael Ellerman , Nicholas Piggin ,\n Naveen N Rao , Mimi Zohar ,\n Roberto Sassu ,\n Dmitry Kasatkin ,\n Eric Snowberg ,\n Nicolas Schier ,\n Daniel Gomez , Aaron Tomlin ,\n \"Christophe Leroy (CS GROUP)\" ,\n Nicolas Bouchinet ,\n Xiu Jianfeng ,\n Christophe Leroy ","Cc":"Martin KaFai Lau , Song Liu ,\n Yonghong Song , Jiri Olsa ,\n bpf@vger.kernel.org,\n =?utf-8?q?Fabian_Gr=C3=BCnbichler?= ,\n Arnout Engelen , Mattia Rizzolo ,\n kpcyrd , Christian Heusel ,\n\t=?utf-8?q?C=C3=A2ju_Mihai-Drosi?= ,\n Eric Biggers ,\n Sebastian Andrzej Siewior ,\n linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org,\n linux-arch@vger.kernel.org, linux-modules@vger.kernel.org,\n linux-security-module@vger.kernel.org, linux-doc@vger.kernel.org,\n linuxppc-dev@lists.ozlabs.org, linux-integrity@vger.kernel.org,\n debian-kernel@lists.debian.org,\n =?utf-8?q?Thomas_Wei=C3=9Fschuh?= ","X-Mailer":"b4 0.15.2","X-Developer-Signature":"v=1; a=ed25519-sha256; t=1777971921; l=2327;\n i=linux@weissschuh.net; s=20221212; h=from:subject:message-id;\n bh=vw8mmyBT43HvPMolq0TpHePOUuR7RTOx6Ud0LgA5MD4=;\n b=uljsY9SHiTroukbScuvpJIHxWmUOPKF1Li5N+qi4PForcgFzxPQa9CcWjxWCEGeyur3gDIlFc\n Z0W8p94VZLqAoErAJy3AInjAguaLaf4rBiEebO3HJ/wS/1lChYp5oMo","X-Developer-Key":"i=linux@weissschuh.net; a=ed25519;\n pk=KcycQgFPX2wGR5azS7RhpBqedglOZVgRPfdFSPB1LNw=","X-Spam-Status":"No, score=-0.2 required=3.0 tests=DKIM_SIGNED,DKIM_VALID,\n\tDKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_NONE,SPF_PASS autolearn=disabled\n\tversion=4.0.1 OzLabs 8","X-Spam-Checker-Version":"SpamAssassin 4.0.1 (2024-03-25) on lists.ozlabs.org"},"content":"The upcoming module hashes functionality will build the modules in\nbetween the generation of the BTF data and the final link of vmlinux.\nAt this point vmlinux is not yet built and therefore can't be used for\nmodule BTF generation. vmlinux.unstripped however is usable and\nsufficient for BTF generation.\n\nSigned-off-by: Thomas Weißschuh \nReviewed-by: Nicolas Schier \n---\n scripts/Makefile.modfinal | 12 +++++++-----\n 1 file changed, 7 insertions(+), 5 deletions(-)","diff":"diff --git a/scripts/Makefile.modfinal b/scripts/Makefile.modfinal\nindex adcbcde16a07..b09040ccddd2 100644\n--- a/scripts/Makefile.modfinal\n+++ b/scripts/Makefile.modfinal\n@@ -38,12 +38,14 @@ quiet_cmd_ld_ko_o = LD [M] $@\n \t\t$(KBUILD_LDFLAGS_MODULE) $(LDFLAGS_MODULE)\t\t\\\n \t\t-T $(objtree)/scripts/module.lds -o $@ $(filter %.o, $^)\n \n+btf-vmlinux := $(if $(KBUILD_EXTMOD),vmlinux,vmlinux.unstripped)\n+\n quiet_cmd_btf_ko = BTF [M] $@\n cmd_btf_ko = \t\t\t\t\t\t\t\\\n-\tif [ ! -f $(objtree)/vmlinux ]; then\t\t\t\t\\\n-\t\tprintf \"Skipping BTF generation for %s due to unavailability of vmlinux\\n\" $@ 1>&2; \\\n+\tif [ ! -f $(objtree)/$(btf-vmlinux) ]; then\t\t\t\t\\\n+\t\tprintf \"Skipping BTF generation for %s due to unavailability of $(btf-vmlinux)\\n\" $@ 1>&2; \\\n \telse\t\\\n-\t\t$(CONFIG_SHELL) $(srctree)/scripts/gen-btf.sh --btf_base $(objtree)/vmlinux $@; \\\n+\t\t$(CONFIG_SHELL) $(srctree)/scripts/gen-btf.sh --btf_base $(objtree)/$(btf-vmlinux) $@; \\\n \tfi;\n \n # Same as newer-prereqs, but allows to exclude specified extra dependencies\n@@ -55,8 +57,8 @@ if_changed_except = $(if $(call newer_prereqs_except,$(2))$(cmd-check), \\\n \tprintf '%s\\n' 'savedcmd_$@ := $(make-cmd)' > $(dot-target).cmd, @:)\n \n # Re-generate module BTFs if either module's .ko or vmlinux changed\n-%.ko: %.o %.mod.o .module-common.o $(objtree)/scripts/module.lds $(and $(CONFIG_DEBUG_INFO_BTF_MODULES),$(KBUILD_BUILTIN),$(objtree)/vmlinux) FORCE\n-\t+$(call if_changed_except,ld_ko_o,$(objtree)/vmlinux)\n+%.ko: %.o %.mod.o .module-common.o $(objtree)/scripts/module.lds $(and $(CONFIG_DEBUG_INFO_BTF_MODULES),$(KBUILD_BUILTIN),$(objtree)/$(btf-vmlinux)) FORCE\n+\t+$(call if_changed_except,ld_ko_o,$(objtree)/$(btf-vmlinux))\n ifdef CONFIG_DEBUG_INFO_BTF_MODULES\n \t+$(if $(newer-prereqs),$(call cmd,btf_ko))\n endif\n","prefixes":["v5","01/14"]}