From nobody Sun Feb 8 12:20:08 2026 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7CE04EB64D7 for ; Fri, 16 Jun 2023 09:25:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344310AbjFPJZv (ORCPT ); Fri, 16 Jun 2023 05:25:51 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41426 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344145AbjFPJYz (ORCPT ); Fri, 16 Jun 2023 05:24:55 -0400 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F346710F6; Fri, 16 Jun 2023 02:24:53 -0700 (PDT) Date: Fri, 16 Jun 2023 09:24:51 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1686907492; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=e6fgxovlKe1RYrO16lLDmsTQ9XUN1pcL1dHZC0P3wqA=; b=3f8cIvwhgflmYtNUKLL+rNakNlJdRJoSGbiD1hbE7G/3fVIs9MKDEMuxUHa3qQcGSURbsM /dfd2gDsyTNmEXWmzKbDOx9WozCIDJ1bKnYttdVzrpd9qff04JeK7swmGPhT8O4VhrEhhh Z63cLWK5El+GblQGlvL211702Gmtqv9is//NdJ5l62M7G0kEVIjp6n6LRpNMuJnPfDHbE/ 5G6MkwUn5iARrA4aqNM6rfaioEOhOb8i4vxuqthlFU3516kYbKMbAOtOCpRlNDk+m/9kEZ xxQzjkTN/Mk6IKpoHdJqX7grwmPeIJHe1BYN2MKzcWxLcx5/4WgZLVKA2+HHLA== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1686907492; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=e6fgxovlKe1RYrO16lLDmsTQ9XUN1pcL1dHZC0P3wqA=; b=4PBxqOXeGoQpV1K68UIc1kFIyk2PS2abqVZW04yZ4wFYLEUfsuVT2+YbZyhuQRy36Puuge rKakMDlcBFmaJhDA== From: "tip-bot2 for Thomas Gleixner" Sender: tip-bot2@linutronix.de Reply-to: linux-kernel@vger.kernel.org To: linux-tip-commits@vger.kernel.org Subject: [tip: x86/boot] init: Provide arch_cpu_finalize_init() Cc: Thomas Gleixner , x86@kernel.org, linux-kernel@vger.kernel.org In-Reply-To: <20230613224544.957805717@linutronix.de> References: <20230613224544.957805717@linutronix.de> MIME-Version: 1.0 Message-ID: <168690749166.404.11609502867505653973.tip-bot2@tip-bot2> Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The following commit has been merged into the x86/boot branch of tip: Commit-ID: 7725acaa4f0c04fbefb0e0d342635b967bb7d414 Gitweb: https://git.kernel.org/tip/7725acaa4f0c04fbefb0e0d342635b967= bb7d414 Author: Thomas Gleixner AuthorDate: Wed, 14 Jun 2023 01:39:22 +02:00 Committer: Thomas Gleixner CommitterDate: Fri, 16 Jun 2023 10:15:59 +02:00 init: Provide arch_cpu_finalize_init() check_bugs() has become a dumping ground for all sorts of activities to finalize the CPU initialization before running the rest of the init code. Most are empty, a few do actual bug checks, some do alternative patching and some cobble a CPU advertisement string together.... Aside of that the current implementation requires duplicated function declaration and mostly empty header files for them. Provide a new function arch_cpu_finalize_init(). Provide a generic declaration if CONFIG_ARCH_HAS_CPU_FINALIZE_INIT is selected and a stub inline otherwise. This requires a temporary #ifdef in start_kernel() which will be removed along with check_bugs() once the architectures are converted over. Signed-off-by: Thomas Gleixner Link: https://lore.kernel.org/r/20230613224544.957805717@linutronix.de --- arch/Kconfig | 3 +++ include/linux/cpu.h | 6 ++++++ init/main.c | 4 ++++ 3 files changed, 13 insertions(+) diff --git a/arch/Kconfig b/arch/Kconfig index 205fd23..171e6b5 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -285,6 +285,9 @@ config ARCH_HAS_DMA_SET_UNCACHED config ARCH_HAS_DMA_CLEAR_UNCACHED bool =20 +config ARCH_HAS_CPU_FINALIZE_INIT + bool + # Select if arch init_task must go in the __init_task_data section config ARCH_TASK_STRUCT_ON_STACK bool diff --git a/include/linux/cpu.h b/include/linux/cpu.h index 8582a71..4893c4a 100644 --- a/include/linux/cpu.h +++ b/include/linux/cpu.h @@ -184,6 +184,12 @@ void arch_cpu_idle_enter(void); void arch_cpu_idle_exit(void); void __noreturn arch_cpu_idle_dead(void); =20 +#ifdef CONFIG_ARCH_HAS_CPU_FINALIZE_INIT +void arch_cpu_finalize_init(void); +#else +static inline void arch_cpu_finalize_init(void) { } +#endif + int cpu_report_state(int cpu); int cpu_check_up_prepare(int cpu); void cpu_set_state_online(int cpu); diff --git a/init/main.c b/init/main.c index af50044..77d5316 100644 --- a/init/main.c +++ b/init/main.c @@ -1078,7 +1078,11 @@ asmlinkage __visible void __init __no_sanitize_addre= ss __noreturn start_kernel(v taskstats_init_early(); delayacct_init(); =20 + arch_cpu_finalize_init(); + /* Temporary conditional until everything has been converted */ +#ifndef CONFIG_ARCH_HAS_CPU_FINALIZE_INIT check_bugs(); +#endif =20 acpi_subsystem_init(); arch_post_acpi_subsys_init();