From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 4EC5BCCD185 for ; Fri, 10 Oct 2025 15:43:10 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id A95328E002B; Fri, 10 Oct 2025 11:43:09 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id A46108E0003; Fri, 10 Oct 2025 11:43:09 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 90DD18E002B; Fri, 10 Oct 2025 11:43:09 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0010.hostedemail.com [216.40.44.10]) by kanga.kvack.org (Postfix) with ESMTP id 78EC88E0003 for ; Fri, 10 Oct 2025 11:43:09 -0400 (EDT) Received: from smtpin16.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay08.hostedemail.com (Postfix) with ESMTP id 2FF261403AC for ; Fri, 10 Oct 2025 15:43:09 +0000 (UTC) X-FDA: 83982623298.16.B92E2D3 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by imf21.hostedemail.com (Postfix) with ESMTP id 6C9031C0017 for ; Fri, 10 Oct 2025 15:43:07 +0000 (UTC) Authentication-Results: imf21.hostedemail.com; dkim=pass header.d=redhat.com header.s=mimecast20190719 header.b=UMQMFxrj; dmarc=pass (policy=quarantine) header.from=redhat.com; spf=pass (imf21.hostedemail.com: domain of vschneid@redhat.com designates 170.10.129.124 as permitted sender) smtp.mailfrom=vschneid@redhat.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1760110987; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=DO8qqKK4diXeF6daiShABtCSRiMA8DgEa8+UbYALx88=; b=rtja6zgRGRqjaS5R0ifC3stqDQssz59Q0c1z8UlU5fgeUXG3Z9ILFmH+0tZCP7kkGOdSc1 PoAOVV5u3U/dUI3rFCuj+o8EOsOt0cTM9no01RJGdKjDJGzSGaVcxA9vo515ppaS6wZVuG Z4N8tukjgvDdsFyb5hdsmJg3moSydSg= ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1760110987; a=rsa-sha256; cv=none; b=o5yg2ZrRoITJ7lrUp3sBa0i8/l7MoZpqdzH4ULVftQCiDtt0JgOQ8+8D5x5WnP4dx1g37F R3lron6yEUDPtSb39GlT0PIsz0SHqSDYba175hhajRkai4PMX5yNKyYBqnPwN6pT/SYJpD 5XkCPRtvElgxqVHcs6lPrl9KpL6jFbM= ARC-Authentication-Results: i=1; imf21.hostedemail.com; dkim=pass header.d=redhat.com header.s=mimecast20190719 header.b=UMQMFxrj; dmarc=pass (policy=quarantine) header.from=redhat.com; spf=pass (imf21.hostedemail.com: domain of vschneid@redhat.com designates 170.10.129.124 as permitted sender) smtp.mailfrom=vschneid@redhat.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1760110986; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=DO8qqKK4diXeF6daiShABtCSRiMA8DgEa8+UbYALx88=; b=UMQMFxrj8xl05lBsxC1WRnDx63DufAfKhgOJUBDMGyir6pFaFpDdFXWQ91ILvYx5Yvswo0 uJHwhIZYi3OxWT1siS09uzFgGF2Lyw9ImTXZmSChYopDlEaxCoBiqo+cnQypxvjsyRusC5 UlY7cFvS3mS69KnUu80Dnj6gzVgXAs8= Received: from mx-prod-mc-03.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-515-m4LwkMHWNBWbZvkPqwP3rA-1; Fri, 10 Oct 2025 11:43:03 -0400 X-MC-Unique: m4LwkMHWNBWbZvkPqwP3rA-1 X-Mimecast-MFC-AGG-ID: m4LwkMHWNBWbZvkPqwP3rA_1760110970 Received: from mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.111]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id A8A1B19560B5; Fri, 10 Oct 2025 15:42:50 +0000 (UTC) Received: from vschneid-thinkpadt14sgen2i.remote.csb (unknown [10.45.224.29]) by mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 81AC41801AD8; Fri, 10 Oct 2025 15:42:35 +0000 (UTC) From: Valentin Schneider To: linux-kernel@vger.kernel.org, linux-mm@kvack.org, rcu@vger.kernel.org, x86@kernel.org, linux-arm-kernel@lists.infradead.org, loongarch@lists.linux.dev, linux-riscv@lists.infradead.org, linux-arch@vger.kernel.org, linux-trace-kernel@vger.kernel.org Cc: Josh Poimboeuf , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , "H. 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 Subject: [PATCH v6 08/29] x86/idle: Mark x86_idle static call as __ro_after_init Date: Fri, 10 Oct 2025 17:38:18 +0200 Message-ID: <20251010153839.151763-9-vschneid@redhat.com> In-Reply-To: <20251010153839.151763-1-vschneid@redhat.com> References: <20251010153839.151763-1-vschneid@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.111 X-Rspamd-Server: rspam01 X-Stat-Signature: qhyfm6z3ocdpmbhcfatkfftguoyy7t1z X-Rspam-User: X-Rspamd-Queue-Id: 6C9031C0017 X-HE-Tag: 1760110987-222128 X-HE-Meta: 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 AENCPXpW 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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 1b7960cf6eb0c..1c2669d9b0396 100644 --- a/arch/x86/kernel/process.c +++ b/arch/x86/kernel/process.c @@ -761,7 +761,7 @@ 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