From patchwork Wed Jun 3 15:10:31 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Will Deacon X-Patchwork-Id: 11585927 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 3D3EC92A for ; Wed, 3 Jun 2020 15:10:55 +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 1995E206E6 for ; Wed, 3 Jun 2020 15:10:55 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="RXPsSOrq"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="F8dLP1R/" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1995E206E6 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org 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=OjXJh6BhEy/+GvOluDdKBUeqW0GFfdun8vfnkqUsDJ4=; b=RXPsSOrqUR5u2X 9o3pfQNyctvgpoAI9j+UXEobngHuzunMBpXJzMVub4wHN+wr7oQLtVQDZRLavfRrPdSmo1rcyRg08 NRsZaFN6YIwJykb6KpYvrNgFl7wGClUvo7mbujYNFB+w8NGG01rZRteuFSLB2ZVkm30FCDg307zTa CTjzNzoB4y0jyJOunsKfceTZVMv6f00+QyNkKAjEuEJhWjCA40JunFQUPCi3PWU1nn4ki5fw89hEu Op56ROtSa5YuBE+4/25oiJ6WQsc0gMSn9OZ+viMfMs70NnlBIaa7b7BhScJYyXCk8Ym+Vzp8IZ2Az qekQAKUbmC1FRzAXQGCA==; 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 1jgV2P-0001W8-IE; Wed, 03 Jun 2020 15:10:41 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jgV2M-0001VR-Us for linux-arm-kernel@lists.infradead.org; Wed, 03 Jun 2020 15:10:40 +0000 Received: from localhost.localdomain (236.31.169.217.in-addr.arpa [217.169.31.236]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 2F3F32067B; Wed, 3 Jun 2020 15:10:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1591197038; bh=KpMFwwZHn4SeIEQRozrwC60n+sDN2ZGsVMylOQtGRuU=; h=From:To:Cc:Subject:Date:From; b=F8dLP1R/4FaGBYfiBh0VoZzhtrI7VX/ytaoOSlAGE0L8aDWrwcT22VahgxFFG1AHo iOpCPbyls1NvMZ2nH41ToQWhX/ro6L0omTaM+8G7x/z+wXFhUvKllvcsBVN/bDqTv+ i90TVsWyJaCV4qw1ma1D00tS+kJm+9MEJJnyNFNk= From: Will Deacon To: linux-arm-kernel@lists.infradead.org Subject: [PATCH 0/2] arm64: Fix single-stepping with reverse debugging Date: Wed, 3 Jun 2020 16:10:31 +0100 Message-Id: <20200603151033.11512-1-will@kernel.org> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200603_081039_017049_8346E7C9 X-CRM114-Status: GOOD ( 11.45 ) X-Spam-Score: -5.2 (-----) X-Spam-Report: SpamAssassin version 3.4.4 on bombadil.infradead.org summary: Content analysis details: (-5.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -5.0 RCVD_IN_DNSWL_HI RBL: Sender listed at https://www.dnswl.org/, high trust [198.145.29.99 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.0 DKIMWL_WL_HIGH DKIMwl.org - Whitelisted High sender 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: Mark Rutland , kernel-team@android.com, Luis Machado , Will Deacon , Keno Fischer Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Hi all, This series fixes a bug in our hardware single-step and ptrace logic that was reported by Luis after seeing some GDB testsuite failures. The second patch is cosmetic, but I was in the area. Cheers, Will Cc: Cc: Mark Rutland Cc: Luis Machado Cc: Keno Fischer --->8 Will Deacon (2): arm64: Override SPSR.SS when single-stepping is enabled arm64: Use test_tsk_thread_flag() for checking TIF_SINGLESTEP arch/arm64/include/asm/debug-monitors.h | 2 ++ arch/arm64/kernel/debug-monitors.c | 24 ++++++++++++++++++------ arch/arm64/kernel/ptrace.c | 4 ++-- arch/arm64/kernel/signal.c | 6 +++++- 4 files changed, 27 insertions(+), 9 deletions(-)