From patchwork Fri Nov 8 18:49:29 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 11235383 X-Patchwork-Delegate: paulburton@kernel.org Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 0A11E1747 for ; Fri, 8 Nov 2019 18:52:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DD67B20865 for ; Fri, 8 Nov 2019 18:52:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573239137; bh=WAau6IR/aThQUlLyDIXnoKCOCQz2hrk3FioonFNx534=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=uO4cm52uIrGU4zCaqGDttoY7g7P8Mi+QqmQWsN8zh9iSNaK5jB5L11GTp+KHZFwz/ Q2PC5Eq0XeYeC0ZdJH1THkHO2jwJoBy4JDaWN1TgMsndFBlRRnzbJRhLejhnX7IvLN HvpSOSFNC0ftDQZ9f/UMBLjisf6xvZ2yBYvcndbM= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730596AbfKHSwR (ORCPT ); Fri, 8 Nov 2019 13:52:17 -0500 Received: from mail.kernel.org ([198.145.29.99]:48466 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726394AbfKHSwR (ORCPT ); Fri, 8 Nov 2019 13:52:17 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 2AF232178F; Fri, 8 Nov 2019 18:52:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573239135; bh=WAau6IR/aThQUlLyDIXnoKCOCQz2hrk3FioonFNx534=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=FMjrBEyey2AtChKSKQIfpAzy9a0cIV73aPH8dJfwDosy6FqnG+7QgxTUh4BWX4L8y A85G9yUgc6NvDEaj6hL5HcDR2M82d7Ll/RFczkIXTLlPas1h5hzL9wjNtvGMnQ8vCS jG5XbVjJdtT0VaRktw6A+UMt8yOMqT3ZMsihhvIw= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Jonas Gorski , Florian Fainelli , Paul Burton , linux-mips@vger.kernel.org, Ralf Baechle , James Hogan , Sasha Levin Subject: [PATCH 4.4 12/75] MIPS: bmips: mark exception vectors as char arrays Date: Fri, 8 Nov 2019 19:49:29 +0100 Message-Id: <20191108174719.472838702@linuxfoundation.org> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191108174708.135680837@linuxfoundation.org> References: <20191108174708.135680837@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: linux-mips-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org From: Jonas Gorski [ Upstream commit e4f5cb1a9b27c0f94ef4f5a0178a3fde2d3d0e9e ] The vectors span more than one byte, so mark them as arrays. Fixes the following build error when building when using GCC 8.3: In file included from ./include/linux/string.h:19, from ./include/linux/bitmap.h:9, from ./include/linux/cpumask.h:12, from ./arch/mips/include/asm/processor.h:15, from ./arch/mips/include/asm/thread_info.h:16, from ./include/linux/thread_info.h:38, from ./include/asm-generic/preempt.h:5, from ./arch/mips/include/generated/asm/preempt.h:1, from ./include/linux/preempt.h:81, from ./include/linux/spinlock.h:51, from ./include/linux/mmzone.h:8, from ./include/linux/bootmem.h:8, from arch/mips/bcm63xx/prom.c:10: arch/mips/bcm63xx/prom.c: In function 'prom_init': ./arch/mips/include/asm/string.h:162:11: error: '__builtin_memcpy' forming offset [2, 32] is out of the bounds [0, 1] of object 'bmips_smp_movevec' with type 'char' [-Werror=array-bounds] __ret = __builtin_memcpy((dst), (src), __len); \ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/mips/bcm63xx/prom.c:97:3: note: in expansion of macro 'memcpy' memcpy((void *)0xa0000200, &bmips_smp_movevec, 0x20); ^~~~~~ In file included from arch/mips/bcm63xx/prom.c:14: ./arch/mips/include/asm/bmips.h:80:13: note: 'bmips_smp_movevec' declared here extern char bmips_smp_movevec; Fixes: 18a1eef92dcd ("MIPS: BMIPS: Introduce bmips.h") Signed-off-by: Jonas Gorski Reviewed-by: Florian Fainelli Signed-off-by: Paul Burton Cc: linux-mips@vger.kernel.org Cc: Ralf Baechle Cc: James Hogan Signed-off-by: Sasha Levin --- arch/mips/bcm63xx/prom.c | 2 +- arch/mips/include/asm/bmips.h | 10 +++++----- arch/mips/kernel/smp-bmips.c | 8 ++++---- 3 files changed, 10 insertions(+), 10 deletions(-) diff --git a/arch/mips/bcm63xx/prom.c b/arch/mips/bcm63xx/prom.c index 7019e2967009e..bbbf8057565b2 100644 --- a/arch/mips/bcm63xx/prom.c +++ b/arch/mips/bcm63xx/prom.c @@ -84,7 +84,7 @@ void __init prom_init(void) * Here we will start up CPU1 in the background and ask it to * reconfigure itself then go back to sleep. */ - memcpy((void *)0xa0000200, &bmips_smp_movevec, 0x20); + memcpy((void *)0xa0000200, bmips_smp_movevec, 0x20); __sync(); set_c0_cause(C_SW0); cpumask_set_cpu(1, &bmips_booted_mask); diff --git a/arch/mips/include/asm/bmips.h b/arch/mips/include/asm/bmips.h index 6d25ad33ec78f..860e4cef61be7 100644 --- a/arch/mips/include/asm/bmips.h +++ b/arch/mips/include/asm/bmips.h @@ -75,11 +75,11 @@ static inline int register_bmips_smp_ops(void) #endif } -extern char bmips_reset_nmi_vec; -extern char bmips_reset_nmi_vec_end; -extern char bmips_smp_movevec; -extern char bmips_smp_int_vec; -extern char bmips_smp_int_vec_end; +extern char bmips_reset_nmi_vec[]; +extern char bmips_reset_nmi_vec_end[]; +extern char bmips_smp_movevec[]; +extern char bmips_smp_int_vec[]; +extern char bmips_smp_int_vec_end[]; extern int bmips_smp_enabled; extern int bmips_cpu_offset; diff --git a/arch/mips/kernel/smp-bmips.c b/arch/mips/kernel/smp-bmips.c index 4874712b475e5..a62d24169d75c 100644 --- a/arch/mips/kernel/smp-bmips.c +++ b/arch/mips/kernel/smp-bmips.c @@ -451,10 +451,10 @@ static void bmips_wr_vec(unsigned long dst, char *start, char *end) static inline void bmips_nmi_handler_setup(void) { - bmips_wr_vec(BMIPS_NMI_RESET_VEC, &bmips_reset_nmi_vec, - &bmips_reset_nmi_vec_end); - bmips_wr_vec(BMIPS_WARM_RESTART_VEC, &bmips_smp_int_vec, - &bmips_smp_int_vec_end); + bmips_wr_vec(BMIPS_NMI_RESET_VEC, bmips_reset_nmi_vec, + bmips_reset_nmi_vec_end); + bmips_wr_vec(BMIPS_WARM_RESTART_VEC, bmips_smp_int_vec, + bmips_smp_int_vec_end); } struct reset_vec_info {