From patchwork Fri Apr 29 09:43:36 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chen Zhongjin X-Patchwork-Id: 12831714 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 4D99BC433F5 for ; Fri, 29 Apr 2022 10:08:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=7r2uViCqfkTGlFvSBO4/AHpB+rI0L+Ll8jgG9NWi80U=; b=SE0dlDA13G8+eR sQw0SeNkiSa25iRJFhNEqdvTYRywao97R5kOe4/ZyE0sQF/dk4dQ9ttFQK6KX+mNID3Hvq36KUSAA CMvYr3yoZDAEtXLff8GwSIF6LD9sg4VSNFHIjgRaBNPo7hIZ+rFXCJlZTAMS51yNSz2LAQ8TAqfzN 2qQrFoZzHhSQaILpqsddK9g12MOo5Mcjk5xvFHPK/8jgbwpTL8c8zsW4pHOLgvDzC9ZmsB2ZQS4eX XOJ1CX2VkB7pJIOKAPMXn0gzNhjCMceI4sUQgpnbOnJonX9d14a8AEUwbWjHGe5OlWZgPiPRo5mnD 3xslTPx3LeY/KXvWH2dg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nkNWa-00AcpX-VO; Fri, 29 Apr 2022 10:06:57 +0000 Received: from desiato.infradead.org ([90.155.92.199]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nkNC6-00ATk4-IW for linux-arm-kernel@bombadil.infradead.org; Fri, 29 Apr 2022 09:45:46 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=Content-Type:MIME-Version:References: In-Reply-To:Message-ID:Date:Subject:CC:To:From:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=ApVOMV2zYqeS8VFUP4y3IE8lT4aS7YxN/418jg2AkjQ=; b=ZPZujFJWvnO0ikvC+0ZZA6omqO CBAWO3750L+KRgLAOdPaB5KPNmkJ3VrlR319Yb8qGqILhe1cbP0IMwvH/GE0SMytqrZOKHlvvJwq7 KpQcfcXqJ7xH6pfhmJPWxLXesrXj8qrETc/CiIrLJh+f4S0DswR8vtHXJLPmDQmXVlH5QEtkUTkGK q0o3cSe1cmrYciYI0jrJjXmxJzFugSpz/ajj/xviTvo+6d7qDcNwDG1w23bXYmR5PjKdkOZnEKJJa xIDAj7fYzLh+GJqhDyIsBDX3HbCzbzUgjuhAGQPS/lqV2LGmcqsN5+a+kTdzVFp1LNSpShAOpJYMj v0ohD3dw==; Received: from szxga08-in.huawei.com ([45.249.212.255]) by desiato.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nkNC2-009ZuD-3V for linux-arm-kernel@lists.infradead.org; Fri, 29 Apr 2022 09:45:44 +0000 Received: from dggpemm500021.china.huawei.com (unknown [172.30.72.53]) by szxga08-in.huawei.com (SkyGuard) with ESMTP id 4KqSJB3Xhjz1JBnH; Fri, 29 Apr 2022 17:44:42 +0800 (CST) Received: from dggpemm500013.china.huawei.com (7.185.36.172) by dggpemm500021.china.huawei.com (7.185.36.109) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.24; Fri, 29 Apr 2022 17:45:12 +0800 Received: from ubuntu1804.huawei.com (10.67.175.36) by dggpemm500013.china.huawei.com (7.185.36.172) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.24; Fri, 29 Apr 2022 17:45:12 +0800 From: Chen Zhongjin To: , , CC: , , , , , , , , , , , , , , Subject: [RFC PATCH v4 18/37] arm64: kgdb: Mark code following kgdb brk as reachable Date: Fri, 29 Apr 2022 17:43:36 +0800 Message-ID: <20220429094355.122389-19-chenzhongjin@huawei.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220429094355.122389-1-chenzhongjin@huawei.com> References: <20220429094355.122389-1-chenzhongjin@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.67.175.36] X-ClientProxiedBy: dggems704-chm.china.huawei.com (10.3.19.181) To dggpemm500013.china.huawei.com (7.185.36.172) X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220429_104542_771083_731B587D X-CRM114-Status: UNSURE ( 6.73 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Julien Thierry In the general use case, KGDB breakpoint handler should return normally to the instruction following the brk. Signed-off-by: Julien Thierry --- arch/arm64/include/asm/kgdb.h | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/include/asm/kgdb.h b/arch/arm64/include/asm/kgdb.h index 21fc85e9d2be..a8cb91d8d59b 100644 --- a/arch/arm64/include/asm/kgdb.h +++ b/arch/arm64/include/asm/kgdb.h @@ -19,6 +19,7 @@ static inline void arch_kgdb_breakpoint(void) { asm ("brk %0" : : "I" (KGDB_COMPILED_DBG_BRK_IMM)); + annotate_reachable(); } extern void kgdb_handle_bus_error(void);