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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 008D6C433F5 for ; Wed, 13 Apr 2022 06:55:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232694AbiDMG55 (ORCPT ); Wed, 13 Apr 2022 02:57:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44762 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233189AbiDMG5f (ORCPT ); Wed, 13 Apr 2022 02:57:35 -0400 Received: from mail-pl1-x629.google.com (mail-pl1-x629.google.com [IPv6:2607:f8b0:4864:20::629]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 705D02DD72 for ; Tue, 12 Apr 2022 23:55:14 -0700 (PDT) Received: by mail-pl1-x629.google.com with SMTP id p10so1156692plf.9 for ; Tue, 12 Apr 2022 23:55:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=NTNvsaYQsVOBKwXhFRizlr6gNAaZNdWVxUOJaeUiNZE=; b=j+3PZTmYmUVLvMaCvmv87lqY2I3xXpgpzEiA42kI+lTOaVCqI+5d7VDErZIGYwhOCT pwddTg9Nrtb/asc9nxKYwgf0WETpAqYxYktp8tbEEzOJ1NH2ZcMXGQ9Iq6EPWJfcQ5Wi iEZvqxhUpSSuDGXtL0CjHCjdAVHxBbVbNoizO9BpIbCQWDixVOH+D8R49FP6FpW+EchY f3u+6v1+GhKtReSPJgYxvj7NxEcNs50Ukf8p3Z/MhUI7p6O6zlQkYRgEo4hjK7B5Z5bs qusUb5fxdVYYDRZfk3ZAKoOrMbIMfJDDgQPBnJVpY7dxetqpW1kw/8GCHVrE9e4ZewuT WGbg== 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:mime-version :content-transfer-encoding; bh=NTNvsaYQsVOBKwXhFRizlr6gNAaZNdWVxUOJaeUiNZE=; b=rQW/5hulvWtJS+UfbrsFZs2H5d+cD8kTATDwlqjSc8p1qRXBO7FFkEiL7eGJo21fA4 ux+zZR/r9zHcTErqkEyOXgKHumQZJ5tRlgTA/uF1uLHHNTnREDuYdOueFMbQ4yu6ZA6o zM2eab8ZjivJ2QRzqzkfoduk66Uh0qIJKFn9C9Zl6Ujwo8wZJnWlXd0+7aWn+mprPCIC KZSBErsgXLH1mRxYgTu9RRQwpSlmTrzs7Ha9SD+PMut5IKP471yhDu8NdxLU+M57o2G3 L+RDz7ye79EBeX/P6jCGti+pqicbUXpDOaho3ZLjPPkLHuZPZZCHAKjycsprERrAO9ih h/0A== X-Gm-Message-State: AOAM530tfGws3UA1Hx0Dp9Q7x1MhIKgsriJs/6gJFaESy+RqXZHohxiY E8EvipxF92gWgvjJIOIni0KDIQ== X-Google-Smtp-Source: ABdhPJyvFxG274Zs7yDnH2SyWAserZi3+Y7NKJp2WGbghG9SqGQxo7K8enBdXjaEmi/lXRb4P9De2A== X-Received: by 2002:a17:90a:430d:b0:1bc:f340:8096 with SMTP id q13-20020a17090a430d00b001bcf3408096mr8920797pjg.93.1649832913843; Tue, 12 Apr 2022 23:55:13 -0700 (PDT) Received: from localhost.localdomain ([223.177.215.72]) by smtp.gmail.com with ESMTPSA id m15-20020a638c0f000000b003827bfe1f5csm4926908pgd.7.2022.04.12.23.55.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 12 Apr 2022 23:55:13 -0700 (PDT) From: Sumit Garg To: linux-arm-kernel@lists.infradead.org, dianders@chromium.org, will@kernel.org, liwei391@huawei.com Cc: catalin.marinas@arm.com, mark.rutland@arm.com, mhiramat@kernel.org, daniel.thompson@linaro.org, jason.wessel@windriver.com, maz@kernel.org, linux-kernel@vger.kernel.org, Sumit Garg Subject: [PATCH v2 0/2] arm64: Fix pending single-step debugging issues Date: Wed, 13 Apr 2022 12:24:56 +0530 Message-Id: <20220413065458.88541-1-sumit.garg@linaro.org> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch-set reworks pending fixes from Wei's series [1] to make single-step debugging via kgdb/kdb on arm64 work as expected. There was a prior discussion on ML [2] regarding if we should keep the interrupts enabled during single-stepping. So patch #1 follows suggestion from Will [3] to not disable interrupts during single stepping but rather skip single stepping within interrupt handler. [1] https://lore.kernel.org/all/20200509214159.19680-1-liwei391@huawei.com/ [2] https://lore.kernel.org/all/CAD=FV=Voyfq3Qz0T3RY+aYWYJ0utdH=P_AweB=13rcV8GDBeyQ@mail.gmail.com/ [3] https://lore.kernel.org/all/20200626095551.GA9312@willie-the-truck/ Changes in v2: - Replace patch #1 to rather follow Will's suggestion. Sumit Garg (2): arm64: entry: Skip single stepping interrupt handlers arm64: kgdb: Set PSTATE.SS to 1 to re-enable single-step arch/arm64/include/asm/debug-monitors.h | 1 + arch/arm64/kernel/debug-monitors.c | 5 +++++ arch/arm64/kernel/entry-common.c | 18 +++++++++++++++++- arch/arm64/kernel/kgdb.c | 2 ++ 4 files changed, 25 insertions(+), 1 deletion(-) -- 2.25.1