From patchwork Wed Jun 22 15:49:03 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chen Zhongjin X-Patchwork-Id: 12891100 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 45A69C433EF for ; Wed, 22 Jun 2022 16:06:44 +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=RbicCOLNhvjpTvBBN80bHsKyW9YzrcOpAygcpT2+0Nk=; b=PHgXZhmY90sCth L2hKqPhS27IBByWKRm2wYCUeWxYN3UhpdxWdzYsZ6KF33VcuCXUVm39Gt1vJEvZKW9TEY2R7EXM2u ONGOpy1aCdpQhCMpDUwZSJFz2TGt8mL/3zWw6ZcPYuPqrQ+yaTjbKk6wxKqiNSeotbE9bCBUy7WQC FtQA4/PEzG+nqpwzebBLnyaxmxHM26ZcYAoTbuUdMJZvrhvuo1fbYHdJ6i3Ir37TO/wu77RZgqXRp 53ffzGRsZ4AI+3sNlScCAsYt71rO+BRx5qQOls4z+vdVA/wTVxXp1ENcKy6aKA8vxsovuXLdq8QA8 hq2uQFrrQzuRPmlu8a+Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1o42r1-00BMsQ-0b; Wed, 22 Jun 2022 16:05:19 +0000 Received: from desiato.infradead.org ([2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1o42fR-00BHxg-Nb for linux-arm-kernel@bombadil.infradead.org; Wed, 22 Jun 2022 15:53:21 +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=nOk142z+zPmNsKr3leLeNw+42n5NuuxkA5L0dlB19AQ=; b=jlFyMIDBDu3YNu7/AvvwcwHfUJ jT24bW8ExTjY8Od7IiFaVoiCeUrvrdip/zN2JW2Gobi+hjJgffr+/VWKnEq6RbBSCUHgQE6zQuEF3 gCMnntgCNE+jhve2IE+U7ePabSdQgsjCUBjyfMWewxx03mjztP6LRQxS4uJhp1QCawWshkbNdO7qK WRktEl74tL0OpiRqra/x30DCfcbnhrGTAPq2aWMfEuvdHX/SFS6MdeF4uRUApTVfYGJxBuj48GOkY hEsnmlHI/MVyG8+EdsXVTJkTcs8lOiJfHM/tNMQVMH488v6GDyYXAXTyEXgnQblJ3sjPEjMrwXYOf e7lROYCw==; Received: from szxga03-in.huawei.com ([45.249.212.189]) by desiato.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1o42ev-00B8hl-HB for linux-arm-kernel@lists.infradead.org; Wed, 22 Jun 2022 15:53:19 +0000 Received: from dggpemm500022.china.huawei.com (unknown [172.30.72.54]) by szxga03-in.huawei.com (SkyGuard) with ESMTP id 4LSnvH50j1zDsKj; Wed, 22 Jun 2022 23:52:11 +0800 (CST) Received: from dggpemm500013.china.huawei.com (7.185.36.172) by dggpemm500022.china.huawei.com (7.185.36.162) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.24; Wed, 22 Jun 2022 23:52:45 +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; Wed, 22 Jun 2022 23:52:44 +0800 From: Chen Zhongjin To: , , , , , CC: , , , , , , , , , , , , , Subject: [PATCH v5 16/33] arm64: kgdb: Add reachable annotation after kgdb brk Date: Wed, 22 Jun 2022 23:49:03 +0800 Message-ID: <20220622154920.95075-17-chenzhongjin@huawei.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220622154920.95075-1-chenzhongjin@huawei.com> References: <20220622154920.95075-1-chenzhongjin@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.67.175.36] X-ClientProxiedBy: dggems701-chm.china.huawei.com (10.3.19.178) 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-20220622_165318_189382_B6618A83 X-CRM114-Status: UNSURE ( 6.61 ) 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 In the general use case, KGDB breakpoint handler should return normally to the instruction following the brk. Signed-off-by: Julien Thierry Signed-off-by: Chen Zhongjin --- 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);