From patchwork Sat May 9 21:41:55 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wei Li X-Patchwork-Id: 11538289 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 8AE8314B4 for ; Sat, 9 May 2020 13:50:03 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 1C01E214D8 for ; Sat, 9 May 2020 13:50:03 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="CQr53vKl" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1C01E214D8 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=huawei.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:Subject:To :From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=bm9Rn38babucuSto/kYNgRVVdqW4RvnZse4gYg7t4nk=; b=CQr53vKljw7nVL y3lvmwNdNDyfKWYqDrh8ecQyU4j4NsWuDc+hUKanMTTK4iNIzErJkDIa7e4RSEUQC1Ghg2eYD/yyi 1+ZIw0J+AQNEihjmbjS3KmXvf9hc0p38kQ6dcINEzHQ1gBTLIKtamyBQfTGI35CzXGpeq4f0Hs402 MC/juOe510FKpRkix042PrU6djaHckEOqHrNn7Iv2iUQQ1/9hf5j0QVtO1CLawtr+HKXFxNYvIbgr I39PjKQi2t6XnLe+QCzerrBbWL0O7cDPMEuSc39T3jeUK3n9RzkyuruLV9hSGJVy9DH4kf3ZxtjmI GqGwvyX+35S1Zwigj9Hg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jXPrX-000865-FC; Sat, 09 May 2020 13:49:55 +0000 Received: from szxga04-in.huawei.com ([45.249.212.190] helo=huawei.com) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jXPr4-0007YG-QH for linux-arm-kernel@lists.infradead.org; Sat, 09 May 2020 13:49:29 +0000 Received: from DGGEMS412-HUB.china.huawei.com (unknown [172.30.72.59]) by Forcepoint Email with ESMTP id 156EF275F844D64B3B40; Sat, 9 May 2020 21:49:09 +0800 (CST) Received: from euler.huawei.com (10.175.101.6) by DGGEMS412-HUB.china.huawei.com (10.3.19.212) with Microsoft SMTP Server id 14.3.487.0; Sat, 9 May 2020 21:49:07 +0800 From: Wei Li To: , , , , , , , , Subject: [PATCH 0/4] arm64: kgdb/kdb: Fix single-step debugging issues Date: Sun, 10 May 2020 05:41:55 +0800 Message-ID: <20200509214159.19680-1-liwei391@huawei.com> X-Mailer: git-send-email 2.17.1 MIME-Version: 1.0 X-Originating-IP: [10.175.101.6] X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200509_064927_827657_FDDDD607 X-CRM114-Status: UNSURE ( 6.22 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -2.3 (--) X-Spam-Report: SpamAssassin version 3.4.4 on bombadil.infradead.org summary: Content analysis details: (-2.3 points) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 RCVD_IN_MSPIKE_H4 RBL: Very Good reputation (+4) [45.249.212.190 listed in wl.mailspike.net] -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [45.249.212.190 listed in list.dnswl.org] -0.0 SPF_HELO_PASS SPF: HELO matches SPF record 0.0 DATE_IN_FUTURE_06_12 Date: is 6 to 12 hours after Received: date -0.0 SPF_PASS SPF: sender matches SPF record 0.0 RCVD_IN_MSPIKE_WL Mailspike good senders X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: liwei1412@163.com, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org This patch set is to fix several issues of single-step debugging in kgdb/kdb on arm64. It seems that these issues have been shelved a very long time, but i still hope to solve them, as the single-step debugging is an useful feature. Note: Based on patch "arm64: cacheflush: Fix KGDB trap detection", https://www.spinics.net/lists/arm-kernel/msg803741.html Wei Li (4): arm64: kgdb: Fix single-step exception handling oops arm64: Extract kprobes_save_local_irqflag() and kprobes_restore_local_irqflag() arm64: kgdb: Fix single-stepping into the irq handler wrongly arm64: kgdb: Set PSTATE.SS to 1 to reenable single-step arch/arm64/include/asm/debug-monitors.h | 6 ++++++ arch/arm64/kernel/debug-monitors.c | 28 ++++++++++++++++++++++++- arch/arm64/kernel/kgdb.c | 16 +++++++++++--- arch/arm64/kernel/probes/kprobes.c | 28 ++----------------------- 4 files changed, 48 insertions(+), 30 deletions(-)