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 E86E2C54EBC for ; Sat, 7 Jan 2023 23:03:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232124AbjAGXD0 (ORCPT ); Sat, 7 Jan 2023 18:03:26 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56408 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229785AbjAGXDX (ORCPT ); Sat, 7 Jan 2023 18:03:23 -0500 Received: from mail-pf1-x430.google.com (mail-pf1-x430.google.com [IPv6:2607:f8b0:4864:20::430]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EFA6E34D6F; Sat, 7 Jan 2023 15:03:17 -0800 (PST) Received: by mail-pf1-x430.google.com with SMTP id g20so3623862pfb.3; Sat, 07 Jan 2023 15:03:17 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :sender:from:to:cc:subject:date:message-id:reply-to; bh=ghLtHCxEHQN0G4J8VZiZj3ppzJlMdwxuQQiALlB0bi8=; b=PLZ+fpox0EVHAsl/kse4VxOpAI/itllww8vvFZz4QlOJnDgg38OJlVJQTYWeGMI/JT vr3rhlMRPRmsyoaj0ymPqZephZ1JzxYx+fouUUF9V24Wem+dY+QWHBddh2hb7dw/Dk5y N4to1k0IwLP5M95xE0Czpv+B+in/EvQjr7uUbOFKFRX+S+Ik+Ob3+u2SthZlnG5WEap9 DxEaZG7oYh1At1gW/Mvgc6BWIUS7UC/8xGJnKmyS/s2OSX16OzDM2QxnUoTAPCGA75oI aNBxCLVQtVwUj1cv+RwriCZnQ0i41doPgYlNLFhBxKdw3oS2wI+Wr1CysiDdx7nCXRCW 5V9g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :sender:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=ghLtHCxEHQN0G4J8VZiZj3ppzJlMdwxuQQiALlB0bi8=; b=r/ulGJC+2nILbMMOUUkLI7lPDM80b9bN4TPxlRejPjsV2K3XJV0K8vws927M47vWQd W6+TOXmLhlQkqJd1So3ySMDkgAN4+4w87MGUkA0w4FRa6jf0QrSsB6T8PSd1DuVHzBum Otpp50r9gYdSNobkbL5/qaowW7BIzviBOrPPrL8z5CVvHSKZUHeWzDbRWH8AV4KFt8uI AnxXJqjOa9H46cTYRtU3ajgBo58zzwSi5psQHr4BOyUNKP4LsPucC5DJ3WbRPW2FOTF1 GtkfSaj/oZhdOFay76BzTlKwmpnqiUx6pwompzvU+pjjqqSfGzEAl6y3woqPa0kFvNsi Tlrg== X-Gm-Message-State: AFqh2koVz0tMAlpEn99XWcWZrJy/Ikyiwt5titzy/BylOm6UD8vEO0jp rl/zT2MbRwJEjAAKVjvfr1IOc68/9qs= X-Google-Smtp-Source: AMrXdXtaYPXPcJhOlF3D5Ggj6ZpYWpwqNOwLh7+OYGnZbLIBfy9qbkqCBj9C7+mZQRJLjw5VkzIxlQ== X-Received: by 2002:a62:1d57:0:b0:581:6979:5e with SMTP id d84-20020a621d57000000b005816979005emr43365172pfd.15.1673132597170; Sat, 07 Jan 2023 15:03:17 -0800 (PST) Received: from ?IPV6:2602:47:d48c:8101:8a2d:2011:f402:6f82? ([2602:47:d48c:8101:8a2d:2011:f402:6f82]) by smtp.googlemail.com with ESMTPSA id r4-20020aa79624000000b0056bd1bf4243sm3311428pfg.53.2023.01.07.15.03.15 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sat, 07 Jan 2023 15:03:16 -0800 (PST) Sender: Richard Henderson Message-ID: Date: Sat, 7 Jan 2023 15:03:14 -0800 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.4.2 Subject: Re: [PATCH] alpha: fix FEN fault handling Content-Language: en-US To: Al Viro Cc: linux-alpha@vger.kernel.org, linux-kernel@vger.kernel.org References: <84c0d4ea-09e2-4907-d03d-939d40fa3c96@twiddle.net> From: Richard Henderson In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 1/7/23 13:28, Al Viro wrote: > On Sat, Jan 07, 2023 at 02:46:26AM +0000, Al Viro wrote: > >> Not sure it's worth bothering with in palcode-clipper - for Linux it's >> useless (run out of timeslice and FEN will end up set, no matter what), >> nothing in NetBSD or OpenBSD trees generates that call_pal, current >> FreeBSD doesn't support alpha and their last version to do so hadn't >> generated that call_pal either... What else is out there? OSF? > > BTW, out of curiosity - what was > case 5: /* illoc */ > default: /* unexpected instruction-fault type */ > about in that switch in do_entIF()? > > All documentation I'd been able to find had only 0..4 as expected > values (bpt/bugcheck/gentrap/fen/opdec)... No idea. Historical git (cd52cb6178a7, v2.4.8 -> v2.4.8.1) suggests it's related to shark_mv, so perhaps a later revision of DEC PALcode. But I have no corresponding documentation. r~