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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5AAA8C433F5 for ; Mon, 27 Sep 2021 21:03:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3539161052 for ; Mon, 27 Sep 2021 21:03:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237236AbhI0VEm (ORCPT ); Mon, 27 Sep 2021 17:04:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37598 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237097AbhI0VEf (ORCPT ); Mon, 27 Sep 2021 17:04:35 -0400 Received: from mail-pj1-x1034.google.com (mail-pj1-x1034.google.com [IPv6:2607:f8b0:4864:20::1034]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2760CC061575; Mon, 27 Sep 2021 14:02:57 -0700 (PDT) Received: by mail-pj1-x1034.google.com with SMTP id kn18so412962pjb.5; Mon, 27 Sep 2021 14:02:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=xCDJzp7o//FBYvMVwfext1aA4OICggdeJGjPIrVfglU=; b=KkKybAlUMBIJCLQA+gX7bBYlqO5ygYEdMHHX869Y3p/Q4vjAQpxz8o288M6rg0a/wE x2DAWzwU+MA5qk/UOF9Y9CqFtQi1w6G20N94+qwMjZJN0GN8MUPZUnaykOEf6s1okQEk d2xIIYEUapE05wXmZ+JWBELHp1d91/Nwujj8vR9bWS44xLzXFkk0a6xf+HqDwPZ7NUPF PccGJTPgkqdcKkJst46/fIycmKCxKetYmKZUQSsCFFfYfBOHe+Nz+68H7QD+pdd9lTkZ ElRqE79Z9DeCaSkOrVrZapYm373cgMBVxDvv+iwvYhmfXAdFniGUwA1j/r8+XX0d20W3 /zpQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=xCDJzp7o//FBYvMVwfext1aA4OICggdeJGjPIrVfglU=; b=XxMY4i5B5fpmdGYv2NSJpswktYLLgUeZolf+PGBnulzuTjviRV7nXvXqsXUeWUAzs1 ef12i0gOubpwLWaHOpSinM9PfkI8Ozxcdjk6hA124+6MTVpoO4SLvp4UCOvqOYYsc+mY 4dGWeW3Vh6EDvD0LQByWQj4C2cgMRfW4Yzhr/WqNwWkcY3GUKKQw4H4LN1R9P25LFXPS H4sng3UM04xtKKBPWypYO/n5+mJYZXqtppHtmzgYAYhlIB3DgiEqxA3toLqOf3C5Hb0Q wdMXIgWuqIScFMyQhtd9+VzIF0Y32v0K0VrsY9SHrhfuF+lmRPKrWAIwUySbSRNCrN/+ 2aEA== X-Gm-Message-State: AOAM532vuzuP/VqeN8NoyURkjq13nQd7INS1FW8aQ2KMuuOYhVNuG6FJ b9wmpszi/tTOTTcdkqGj8LkUw++sXx4= X-Google-Smtp-Source: ABdhPJx6yTDeMaJlsRvXBBFQA2124qZxaqftRnR+ML6H8tRXSSJ9kXvtEqi3fF1day8yfhLRGB9yvA== X-Received: by 2002:a17:902:f693:b0:13e:161a:f172 with SMTP id l19-20020a170902f69300b0013e161af172mr1871561plg.30.1632776576318; Mon, 27 Sep 2021 14:02:56 -0700 (PDT) Received: from fainelli-desktop.igp.broadcom.net ([192.19.223.252]) by smtp.gmail.com with ESMTPSA id y3sm310537pjg.7.2021.09.27.14.02.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 27 Sep 2021 14:02:55 -0700 (PDT) From: Florian Fainelli To: linux-kernel@vger.kernel.org Cc: stable@vger.kernel.org, Greg Kroah-Hartman , Sasha Levin , Alex Sverdlin , Russell King , Florian Fainelli , Steven Rostedt , Ingo Molnar , Russell King , linux-arm-kernel@lists.infradead.org (moderated list:ARM PORT) Subject: [PATCH stable 4.19 v3 2/4] ARM: 9078/1: Add warn suppress parameter to arm_gen_branch_link() Date: Mon, 27 Sep 2021 14:02:44 -0700 Message-Id: <20210927210246.3216892-3-f.fainelli@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210927210246.3216892-1-f.fainelli@gmail.com> References: <20210927210246.3216892-1-f.fainelli@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Alex Sverdlin commit 890cb057a46d323fd8c77ebecb6485476614cd21 upstream Will be used in the following patch. No functional change. Signed-off-by: Alexander Sverdlin Signed-off-by: Russell King Signed-off-by: Florian Fainelli --- arch/arm/include/asm/insn.h | 8 ++++---- arch/arm/kernel/ftrace.c | 2 +- arch/arm/kernel/insn.c | 19 ++++++++++--------- 3 files changed, 15 insertions(+), 14 deletions(-) diff --git a/arch/arm/include/asm/insn.h b/arch/arm/include/asm/insn.h index f20e08ac85ae..5475cbf9fb6b 100644 --- a/arch/arm/include/asm/insn.h +++ b/arch/arm/include/asm/insn.h @@ -13,18 +13,18 @@ arm_gen_nop(void) } unsigned long -__arm_gen_branch(unsigned long pc, unsigned long addr, bool link); +__arm_gen_branch(unsigned long pc, unsigned long addr, bool link, bool warn); static inline unsigned long arm_gen_branch(unsigned long pc, unsigned long addr) { - return __arm_gen_branch(pc, addr, false); + return __arm_gen_branch(pc, addr, false, true); } static inline unsigned long -arm_gen_branch_link(unsigned long pc, unsigned long addr) +arm_gen_branch_link(unsigned long pc, unsigned long addr, bool warn) { - return __arm_gen_branch(pc, addr, true); + return __arm_gen_branch(pc, addr, true, warn); } #endif diff --git a/arch/arm/kernel/ftrace.c b/arch/arm/kernel/ftrace.c index ee673c09aa6c..05bf124ae324 100644 --- a/arch/arm/kernel/ftrace.c +++ b/arch/arm/kernel/ftrace.c @@ -98,7 +98,7 @@ int ftrace_arch_code_modify_post_process(void) static unsigned long ftrace_call_replace(unsigned long pc, unsigned long addr) { - return arm_gen_branch_link(pc, addr); + return arm_gen_branch_link(pc, addr, true); } static int ftrace_modify_code(unsigned long pc, unsigned long old, diff --git a/arch/arm/kernel/insn.c b/arch/arm/kernel/insn.c index 2e844b70386b..db0acbb7d7a0 100644 --- a/arch/arm/kernel/insn.c +++ b/arch/arm/kernel/insn.c @@ -3,8 +3,9 @@ #include #include -static unsigned long -__arm_gen_branch_thumb2(unsigned long pc, unsigned long addr, bool link) +static unsigned long __arm_gen_branch_thumb2(unsigned long pc, + unsigned long addr, bool link, + bool warn) { unsigned long s, j1, j2, i1, i2, imm10, imm11; unsigned long first, second; @@ -12,7 +13,7 @@ __arm_gen_branch_thumb2(unsigned long pc, unsigned long addr, bool link) offset = (long)addr - (long)(pc + 4); if (offset < -16777216 || offset > 16777214) { - WARN_ON_ONCE(1); + WARN_ON_ONCE(warn); return 0; } @@ -33,8 +34,8 @@ __arm_gen_branch_thumb2(unsigned long pc, unsigned long addr, bool link) return __opcode_thumb32_compose(first, second); } -static unsigned long -__arm_gen_branch_arm(unsigned long pc, unsigned long addr, bool link) +static unsigned long __arm_gen_branch_arm(unsigned long pc, unsigned long addr, + bool link, bool warn) { unsigned long opcode = 0xea000000; long offset; @@ -44,7 +45,7 @@ __arm_gen_branch_arm(unsigned long pc, unsigned long addr, bool link) offset = (long)addr - (long)(pc + 8); if (unlikely(offset < -33554432 || offset > 33554428)) { - WARN_ON_ONCE(1); + WARN_ON_ONCE(warn); return 0; } @@ -54,10 +55,10 @@ __arm_gen_branch_arm(unsigned long pc, unsigned long addr, bool link) } unsigned long -__arm_gen_branch(unsigned long pc, unsigned long addr, bool link) +__arm_gen_branch(unsigned long pc, unsigned long addr, bool link, bool warn) { if (IS_ENABLED(CONFIG_THUMB2_KERNEL)) - return __arm_gen_branch_thumb2(pc, addr, link); + return __arm_gen_branch_thumb2(pc, addr, link, warn); else - return __arm_gen_branch_arm(pc, addr, link); + return __arm_gen_branch_arm(pc, addr, link, warn); } -- 2.25.1