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Peter Anvin" , Andy Lutomirski , Peter Zijlstra , Arnaldo Carvalho de Melo , Paolo Bonzini , Arnd Bergmann , Frederic Weisbecker , "Paul E. McKenney" , Jason Baron , Steven Rostedt , Ard Biesheuvel , Sami Tolvanen , "David S. Miller" , Neeraj Upadhyay , Joel Fernandes , Josh Triplett , Boqun Feng , Uladzislau Rezki , Mathieu Desnoyers , Mel Gorman , Andrew Morton , Masahiro Yamada , Han Shen , Rik van Riel , Jann Horn , Dan Carpenter , Oleg Nesterov , Juri Lelli , Clark Williams , Yair Podemsky , Marcelo Tosatti , Daniel Wagner , Petr Tesarik , Shrikanth Hegde Subject: [PATCH v7 08/31] x86/idle: Mark x86_idle static call as __ro_after_init Date: Fri, 14 Nov 2025 16:01:10 +0100 Message-ID: <20251114150133.1056710-9-vschneid@redhat.com> In-Reply-To: <20251114150133.1056710-1-vschneid@redhat.com> References: <20251114150133.1056710-1-vschneid@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.0 on 10.30.177.12 X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: 899011C000C X-Stat-Signature: 1uowxprmwpgjgun4czptfo9u3sn1b1g4 X-Rspam-User: X-HE-Tag: 1763132665-200231 X-HE-Meta: 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 Hgm5KqPj 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 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 4c718f8adc592..4f0c1868d43d9 100644 --- a/arch/x86/kernel/process.c +++ b/arch/x86/kernel/process.c @@ -771,7 +771,7 @@ 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) { -- 2.51.0