From patchwork Tue Feb 14 07:05:36 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Josh Poimboeuf X-Patchwork-Id: 1742061 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org (client-ip=2404:9400:2:0:216:3eff:fee1:b9f1; helo=lists.ozlabs.org; envelope-from=linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org; receiver=) Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=o1g46Mnm; dkim-atps=neutral Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2404:9400:2:0:216:3eff:fee1:b9f1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-384)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4PGC37486wz23h0 for ; 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Tue, 14 Feb 2023 18:06:56 +1100 (AEDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 649A9B81BFF; Tue, 14 Feb 2023 07:06:53 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7744CC433AE; Tue, 14 Feb 2023 07:06:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1676358412; bh=Ya58HiCcymNeXiDsDrSrB3MVa42ANSTnVDrYM/I8DGE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=o1g46MnmwcBx8T5+mpqxpWg9RNiPGwxWh7u50+UbvVV/HCNE/CzztVflEM53qxglv YYK/YrY0Q9V6xIHds9bSBH9HN0lqUKa6Z1xe3cfCjxpSNsspagp2pNbL0WMNKEQ0Rx pzr+HaAh9N3K2/cV0XtAVxzNNCB75oEBpHNITqIRR27J3mfkFgz/r562+bVXahSIST IY0Pnmrhw/r9K8+6kstkVaj4pLQJnS5iSYM8p9up4WRV2EcZ3VkSKGVUgn+3GYoIew SCyrNFtXGmtYxVMosYI0z60anWodjY2gKyCCb0H5AEcAnHnT5mlvQpZIVvTrKYjllD UOkJrRuEY33Fg== From: Josh Poimboeuf To: linux-kernel@vger.kernel.org Subject: [PATCH v2 02/24] alpha/cpu: Make sure arch_cpu_idle_dead() doesn't return Date: Mon, 13 Feb 2023 23:05:36 -0800 Message-Id: <19ffef09a175fecb783abcd44d6bcfeade2857eb.1676358308.git.jpoimboe@kernel.org> X-Mailer: git-send-email 2.39.1 In-Reply-To: References: MIME-Version: 1.0 Content-type: text/plain X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: juri.lelli@redhat.com, dalias@libc.org, linux-ia64@vger.kernel.org, linux-sh@vger.kernel.org, peterz@infradead.org, catalin.marinas@arm.com, dave.hansen@linux.intel.com, x86@kernel.org, jiaxun.yang@flygoat.com, bsegall@google.com, jcmvbkbc@gmail.com, guoren@kernel.org, hpa@zytor.com, sparclinux@vger.kernel.org, kernel@xen0n.name, will@kernel.org, vschneid@redhat.com, f.fainelli@gmail.com, vincent.guittot@linaro.org, ysato@users.sourceforge.jp, chenhuacai@kernel.org, linux@armlinux.org.uk, linux-csky@vger.kernel.org, mingo@redhat.com, bcm-kernel-feedback-list@broadcom.com, mgorman@suse.de, mattst88@gmail.com, linux-xtensa@linux-xtensa.org, paulmck@kernel.org, richard.henderson@linaro.org, npiggin@gmail.com, ink@jurassic.park.msu.ru, rostedt@goodmis.org, loongarch@lists.linux.dev, tglx@linutronix.de, dietmar.eggemann@arm.com, linux-arm-kernel@lists.infradead.org, jgross@suse.com, chris@zankel.net, tsbogend@alpha.franken.de, bristot@redhat.com, linux-mips@vger.kernel.org, linux-alph a@vger.kernel.org, bp@alien8.de, linuxppc-dev@lists.ozlabs.org, davem@davemloft.net Errors-To: linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" arch_cpu_idle_dead() doesn't return. Make that more explicit with a BUG(). BUG() is preferable to unreachable() because BUG() is a more explicit failure mode and avoids undefined behavior like falling off the edge of the function into whatever code happens to be next. Signed-off-by: Josh Poimboeuf --- arch/alpha/kernel/process.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/alpha/kernel/process.c b/arch/alpha/kernel/process.c index d1f2e8b6b107..d0ff06eda8fa 100644 --- a/arch/alpha/kernel/process.c +++ b/arch/alpha/kernel/process.c @@ -63,6 +63,7 @@ void arch_cpu_idle(void) void arch_cpu_idle_dead(void) { wtint(INT_MAX); + BUG(); } #endif /* ALPHA_WTINT */