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Tue, 14 Jan 2025 17:56:18 +0000 (UTC) Received: from vschneid-thinkpadt14sgen2i.remote.csb (unknown [10.39.192.55]) by mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id AE8F1195608A; Tue, 14 Jan 2025 17:55:53 +0000 (UTC) From: Valentin Schneider To: linux-kernel@vger.kernel.org, x86@kernel.org, virtualization@lists.linux.dev, linux-arm-kernel@lists.infradead.org, loongarch@lists.linux.dev, linux-riscv@lists.infradead.org, linux-perf-users@vger.kernel.org, xen-devel@lists.xenproject.org, kvm@vger.kernel.org, linux-arch@vger.kernel.org, rcu@vger.kernel.org, linux-hardening@vger.kernel.org, linux-mm@kvack.org, linux-kselftest@vger.kernel.org, bpf@vger.kernel.org, bcm-kernel-feedback-list@broadcom.com Cc: Josh Poimboeuf , Juergen Gross , Ajay Kaher , Alexey Makhalov , Russell King , Catalin Marinas , Will Deacon , Huacai Chen , WANG Xuerui , Paul Walmsley , Palmer Dabbelt , Albert Ou , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , "H. Peter Anvin" , Peter Zijlstra , Arnaldo Carvalho de Melo , Namhyung Kim , Mark Rutland , Alexander Shishkin , Jiri Olsa , Ian Rogers , Adrian Hunter , "Liang, Kan" , Boris Ostrovsky , Pawan Gupta , Sean Christopherson , Paolo Bonzini , Andy Lutomirski , Arnd Bergmann , Frederic Weisbecker , "Paul E. McKenney" , Jason Baron , Steven Rostedt , Ard Biesheuvel , Neeraj Upadhyay , Joel Fernandes , Josh Triplett , Boqun Feng , Uladzislau Rezki , Mathieu Desnoyers , Lai Jiangshan , Zqiang , Juri Lelli , Clark Williams , Yair Podemsky , Tomas Glozar , Vincent Guittot , Dietmar Eggemann , Ben Segall , Mel Gorman , Kees Cook , Andrew Morton , Christoph Hellwig , Shuah Khan , Sami Tolvanen , Miguel Ojeda , Alice Ryhl , "Mike Rapoport (Microsoft)" , Samuel Holland , Rong Xu , Nicolas Saenz Julienne , Geert Uytterhoeven , Yosry Ahmed , "Kirill A. Shutemov" , "Masami Hiramatsu (Google)" , Jinghao Jia , Luis Chamberlain , Randy Dunlap , Tiezhu Yang Subject: [PATCH v4 08/30] x86/idle: Mark x86_idle static call as __ro_after_init Date: Tue, 14 Jan 2025 18:51:21 +0100 Message-ID: <20250114175143.81438-9-vschneid@redhat.com> In-Reply-To: <20250114175143.81438-1-vschneid@redhat.com> References: <20250114175143.81438-1-vschneid@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.0 on 10.30.177.15 X-Rspamd-Queue-Id: 003A3180012 X-Rspam-User: X-Rspamd-Server: rspam07 X-Stat-Signature: dwt3zurwnqp74uan7iyj8nyduiydcpcp X-HE-Tag: 1736877386-830177 X-HE-Meta: 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 3kC94Ei2 zAWuFsUwJ8ktZXpwZMlDoBHkU+2c8tkCbIBWeFFxMbUgyVaIK5tg5JRYrocADg2kT6beINCAK2NGfW32LoPIFGSlLVq5YOZHwYtGAmiB5tXV0aEnzp//grZ1A2yBKlM7lbdc7DkofVawBSStV5gzcmfzXXDVNpB9haI5pfNImfdERLEoujIxkArqDURQ10ACZZMm8qxDnY3DwNBmkILs8co/gMAMo2r1MiU8juPN1LyB0k2smPrv9bIgd7PilYWhZU5wLcZ1VAqknP7npZNy/Utu/EFkVfbUMHDJMNcYChKYySiRpOqTcaEuSC31WqiFuXIsxcJomkXBaNkeIdWAhy8XVWOoPEfqHRXO5xvdsgCir9eF7c56+ihZFRFXWk+i5JUDqfzCPqqmzXSRefheA0PMVBL96itHT8UWBW8jlY6INVnCwebmGDl7FR72HiI2+dt1VYFy0fJgX5h2VjBZV8Zc2QZMUS4jj08+wFxA+DzS2+d0= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Later commits will cause objtool to warn about static calls being used in .noinstr sections in order to safely defer instruction patching IPIs targeted at NOHZ_FULL CPUs. x86_idle is updated in: o xen_set_default_idle() <- __init xen_arch_setup() o __init select_idle_routine() IOW purely init context, and can thus be marked as __ro_after_init. Reported-by: Josh Poimboeuf Signed-off-by: Valentin Schneider --- arch/x86/kernel/process.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c index f63f8fd00a91f..85cd62f61d633 100644 --- a/arch/x86/kernel/process.c +++ b/arch/x86/kernel/process.c @@ -746,7 +746,7 @@ void __cpuidle default_idle(void) EXPORT_SYMBOL(default_idle); #endif -DEFINE_STATIC_CALL_NULL(x86_idle, default_idle); +DEFINE_STATIC_CALL_NULL_RO(x86_idle, default_idle); static bool x86_idle_set(void) {