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=-8.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham 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 6CF6FC4338F for ; Sat, 24 Jul 2021 20:28:45 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (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 D6E2F60E09 for ; Sat, 24 Jul 2021 20:28:44 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org D6E2F60E09 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=nongnu.org Received: from localhost ([::1]:40084 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1m7OGJ-0002Bb-Ja for qemu-devel@archiver.kernel.org; Sat, 24 Jul 2021 16:28:43 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:55868) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1m7OFP-0001VY-2Z for qemu-devel@nongnu.org; Sat, 24 Jul 2021 16:27:47 -0400 Received: from mail-ed1-x529.google.com ([2a00:1450:4864:20::529]:42805) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1m7OFN-0000ox-By for qemu-devel@nongnu.org; Sat, 24 Jul 2021 16:27:46 -0400 Received: by mail-ed1-x529.google.com with SMTP id df26so6185924edb.9 for ; Sat, 24 Jul 2021 13:27:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=pXRu+mll6+Q7fa4YW9wcgE48pJE3epPEKEsQyZ/+Skk=; b=dpFoul6lw2HTxAOhFqKUocTpMxGIG2VdyLopjJCbhqZSTvfMOcs0c6Za90iyyWzX19 ZNe/dU8ctWPPygnjlZOueuNl0FIknIjzUccZpXi7nMNg7rluraM3ZVFgMb6qk6Gp6WXF XuBINHwAgBAHrb7COWMaa9HX5rL3iO0QdpBoRyHv5+TvrV/ZEoayXJFJ4wVGgtZfrb2v /yZSoJCa3VcKX+IiaHb6PxrzQTFy58RZDG3pLKSDs8K84SWZ/tg05szt+O6ieXhfF+vJ A0mKrcsQeYqmW+P9iGWmgQhctZDl5kNkOBsSVaFnHj9u6wcvjuoxaX3Lh3uRct6rkIB2 nlYA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=pXRu+mll6+Q7fa4YW9wcgE48pJE3epPEKEsQyZ/+Skk=; b=os4CE4SlioMdcmyLXZC7mrLfH+AKxL0cYIp/osm0uUyyR+Or/a+nzd+FLYgG272Lqd 8bYX9XfzFclyPKVwitDuMXubIkb3ca4GIQnnWpgZVawvfAemeykcl/vRLmDmjElTMTyB tOAtmsPRaz2GtpzMz2Hz3ZGqLh6jLTNvqtuZeGjktLVkVWFc93SYZ2scDmxjrY6RvlRW FYNQsng3OKQbqDHb4uPErAftEokKiTDygJicPBFiZufrN8Qt7slZ7eW6fc+JYYGQUNI6 NRIMTt/XtWmW2do+onw0IaeGaO0V688BvLmkWGId2hGCWGIRV+p3j/nOE4y7GHyOgEsA CfiQ== X-Gm-Message-State: AOAM531ct7kQFdoGpZEydR9afo1DYp8zA7ZblJDjtmmyCqYmbGpsnEET dHBbwrCNAHAqidx766cp7FXq/gQMx63Hm4CAJAid/sA55OirOg== X-Google-Smtp-Source: ABdhPJyDAc1MOWph8+4efcyUCG8VF0/ZUexjKM0AMbtzdwh+1f/uM2LzwZEtWBgZcRWCSO6R9IHhvbxG0XpswV6r4eI= X-Received: by 2002:aa7:c857:: with SMTP id g23mr12519265edt.100.1627158463402; Sat, 24 Jul 2021 13:27:43 -0700 (PDT) MIME-Version: 1.0 References: <20210724134902.7785-1-peter.maydell@linaro.org> In-Reply-To: <20210724134902.7785-1-peter.maydell@linaro.org> From: Peter Maydell Date: Sat, 24 Jul 2021 21:27:01 +0100 Message-ID: Subject: Re: [PATCH for-6.2 0/2] target/sparc: Drop use of gen_io_end() To: QEMU Developers Content-Type: text/plain; charset="UTF-8" Received-SPF: pass client-ip=2a00:1450:4864:20::529; envelope-from=peter.maydell@linaro.org; helo=mail-ed1-x529.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Richard Henderson , Mark Cave-Ayland , Artyom Tarasenko Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Sat, 24 Jul 2021 at 14:49, Peter Maydell wrote: > There is a slight difficulty here with testing this: icount > doesn't seem to work for sparc Linux guests in master at the > moment. For instance if you get the advent calendar image from > https://www.qemu-advent-calendar.org/2018/download/day11.tar.xz > it will boot without icount with a command line like > qemu-system-sparc -display none -vga none -machine SS-20 -serial stdio -kernel /tmp/day11/zImage.elf > But if you add '-icount auto' it will get as far as > "bootconsole [earlyprom0] disabled" and then apparently hang. > I'm not sure what's going on here :-( > (I filed this as https://gitlab.com/qemu-project/qemu/-/issues/499) This turns out to be a recent regression, caused by commit 78ff82bb ("accel/tcg: Reduce CF_COUNT_MASK to match TCG_MAX_INSNS"). It's an intermittent rather than a 100% reproducible hang. -- PMM