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Piccoli" , Michael Kelley , kernel test robot Subject: [PATCH 02/11] init: Mark start_kernel() __noreturn Date: Fri, 7 Apr 2023 17:09:55 -0700 Message-Id: X-Mailer: git-send-email 2.39.2 In-Reply-To: References: MIME-Version: 1.0 Content-type: text/plain X-Spam-Status: No, score=-5.2 required=5.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_HI,SPF_HELO_NONE, SPF_PASS 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: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1762565467197344352?= X-GMAIL-MSGID: =?utf-8?q?1762565467197344352?= Fixes the following warning: vmlinux.o: warning: objtool: x86_64_start_reservations+0x28: unreachable instruction Reported-by: kernel test robot Link: https://lore.kernel.org/r/202302161142.K3ziREaj-lkp@intel.com/ Signed-off-by: Josh Poimboeuf Reviewed-by: Nick Desaulniers --- include/linux/start_kernel.h | 2 +- init/main.c | 2 +- tools/objtool/check.c | 1 + 3 files changed, 3 insertions(+), 2 deletions(-) diff --git a/include/linux/start_kernel.h b/include/linux/start_kernel.h index 864921e54c92..a9806a44a605 100644 --- a/include/linux/start_kernel.h +++ b/include/linux/start_kernel.h @@ -8,7 +8,7 @@ /* Define the prototype for start_kernel here, rather than cluttering up something else. */ -extern asmlinkage void __init start_kernel(void); +extern asmlinkage void __init __noreturn start_kernel(void); extern void __init __noreturn arch_call_rest_init(void); extern void __ref __noreturn rest_init(void); diff --git a/init/main.c b/init/main.c index 161ed956d738..65aab4e9bb49 100644 --- a/init/main.c +++ b/init/main.c @@ -937,7 +937,7 @@ static void __init print_unknown_bootoptions(void) memblock_free(unknown_options, len); } -asmlinkage __visible void __init __no_sanitize_address start_kernel(void) +asmlinkage __visible void __init __no_sanitize_address __noreturn start_kernel(void) { char *command_line; char *after_dashes; diff --git a/tools/objtool/check.c b/tools/objtool/check.c index e7442e7ad676..a6f9a4aeb77b 100644 --- a/tools/objtool/check.c +++ b/tools/objtool/check.c @@ -222,6 +222,7 @@ static bool __dead_end_function(struct objtool_file *file, struct symbol *func, "rewind_stack_and_make_dead", "sev_es_terminate", "snp_abort", + "start_kernel", "stop_this_cpu", "usercopy_abort", "xen_cpu_bringup_again",