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 X-Spam-Level: X-Spam-Status: No, score=-3.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7E2C7C38A30 for ; Tue, 21 Apr 2020 02:24:04 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (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 E5B052082E for ; Tue, 21 Apr 2020 02:24:03 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="c64iBqIz" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E5B052082E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 495nSK1mKXzDqyh for ; Tue, 21 Apr 2020 12:24:01 +1000 (AEST) Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=gmail.com (client-ip=2607:f8b0:4864:20::443; helo=mail-pf1-x443.google.com; envelope-from=npiggin@gmail.com; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20161025 header.b=c64iBqIz; dkim-atps=neutral Received: from mail-pf1-x443.google.com (mail-pf1-x443.google.com [IPv6:2607:f8b0:4864:20::443]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 495nQ33rjWzDqkf for ; Tue, 21 Apr 2020 12:22:00 +1000 (AEST) Received: by mail-pf1-x443.google.com with SMTP id g30so5927219pfr.3 for ; Mon, 20 Apr 2020 19:22:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=ZaiQTpBjus0YI32dZnAL3DNMPd39ij1RLV0PfpWFIs0=; b=c64iBqIzn7nHA+MF9lkZTSyUKdnW5VRqStBApR9flQQBerSSEkn59KYYaIU+MF9gGq U08Myp2N0DDk8A5X4N8eXmIpkKDcIhfpFNHykezCbk1fJn/+kdXpcZoHoidVa1ngkggx CU0eGT0m4So7WII+PpdCN70/1be9nyE7qmzo9BlP8O0SG62+nUuLqAQNkKIXYwNJpNcT TOOr7Jilb70Ue0rCzkAGBvrPU2MnN+i1wGjPPMePR2E4YOO1eg4xGwljM1HZ9kdKLovb 1WDIkh4+DSX3dDC4H2nbKfpgw522Zw4ZqHZ30iHTE90z7uOpv0173SWnrw+mB6UI3gZG beig== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=ZaiQTpBjus0YI32dZnAL3DNMPd39ij1RLV0PfpWFIs0=; b=hoYC8afXrpNgASz63ijB1QURGOXtIS8nMv7wb7zmfQx+OnrQ0H0ZQeASwqPL3A2284 UA3iq9D+ywLFg8oDD/8CNsR2xrwxR5dRpueKL8m2+aGJWM515a+BE5kc6RJbQieJBa3u G6g7V57ARHbgHjK6xCIe+2iv3xw86lb8V2R7kg0sLlVPa0bGOND0cAftL0eBTvGY5vP7 4HlqfMJz4uoo5DUfR882LKgtu0lHlisMEwogCSyWhg7AbtnvMl42Qsm19GiJzzosw0yk NV/gWhpluKbT4CyfgvrU0lvM+t9iFU4Bp9HzS1t+ROGmgRrktDXwj6FrBTuVXuLE0JGm atNg== X-Gm-Message-State: AGi0PuZ7MENcVaGmF/sEL15iZA+Pxfm4TEfaY5qKV8v7QmsOu1ItlcS3 XrW7y+ZdWOAK39UBM2VLID4RSFHM X-Google-Smtp-Source: APiQypKR3OQ6k8d5cZRnb05HBFQnHxCbKZyr98fAOZlndrYVOPs2NjdZ8nQRYa3W3pwPqLI6zjoI0Q== X-Received: by 2002:a63:1d46:: with SMTP id d6mr20116855pgm.236.1587435717014; Mon, 20 Apr 2020 19:21:57 -0700 (PDT) Received: from bobo.ozlabs.ibm.com ([203.185.249.170]) by smtp.gmail.com with ESMTPSA id w3sm829397pfn.115.2020.04.20.19.21.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 20 Apr 2020 19:21:56 -0700 (PDT) From: Nicholas Piggin To: linuxppc-dev@lists.ozlabs.org Subject: [PATCH 0/4] powerpc: clean up pt_regs traps handling Date: Tue, 21 Apr 2020 12:19:51 +1000 Message-Id: <20200421021955.772023-1-npiggin@gmail.com> X-Mailer: git-send-email 2.23.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Nicholas Piggin Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" scv support needs to test trap in some cases to distinguish sc from scv, so it helps to have a few tidy-up patches to start with. This turned into a slightly bigger job that we needed to do to clean up the double restart logic that today zeroes traps which is ugly. Thanks, Nick Nicholas Piggin (4): powerpc/64s: Always has full regs, so remove remnant checks powerpc: Use SET_TRAP and avoid open-coding trap masking powerpc: TRAP_IS_SYSCALL helper to hide syscall trap number powerpc: Use trap metadata to prevent double restart rather than zeroing trap arch/powerpc/include/asm/ptrace.h | 31 +++- arch/powerpc/include/asm/syscall.h | 5 +- arch/powerpc/kernel/process.c | 4 +- arch/powerpc/kernel/ptrace/ptrace-tm.c | 2 +- arch/powerpc/kernel/ptrace/ptrace-view.c | 2 +- arch/powerpc/kernel/signal.c | 9 +- arch/powerpc/kernel/signal_32.c | 2 +- arch/powerpc/kernel/signal_64.c | 10 +- arch/powerpc/xmon/xmon.c | 4 +- .../testing/selftests/powerpc/signal/Makefile | 2 +- .../powerpc/signal/sig_sc_double_restart.c | 174 ++++++++++++++++++ 11 files changed, 220 insertions(+), 25 deletions(-) create mode 100644 tools/testing/selftests/powerpc/signal/sig_sc_double_restart.c -- 2.23.0