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=-3.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED 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 CCE7FC433E0 for ; Thu, 4 Feb 2021 10:04:43 +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 3EE3D64F58 for ; Thu, 4 Feb 2021 10:04:43 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3EE3D64F58 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:52904 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1l7bVC-0008Qk-2G for qemu-devel@archiver.kernel.org; Thu, 04 Feb 2021 05:04:42 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:51114) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1l7bPT-0002YA-RF for qemu-devel@nongnu.org; Thu, 04 Feb 2021 04:58:47 -0500 Received: from mail-ej1-x62b.google.com ([2a00:1450:4864:20::62b]:38050) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1l7bPQ-0008WB-GM for qemu-devel@nongnu.org; Thu, 04 Feb 2021 04:58:46 -0500 Received: by mail-ej1-x62b.google.com with SMTP id bl23so4301791ejb.5 for ; Thu, 04 Feb 2021 01:58:43 -0800 (PST) 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=yDMQTjX5hIj7OGELKHuMpw7yuO+EJIADPkyuUG3Ijj4=; b=VGdSOdY+D6RmXoOtlNDyqSyuStreGPMa4oZUqG+fWpC4/52xROWNR63LYaI3vqRBYm 2gnqMHVTZq8+vOlZUgPdHeRxTsr3gB6TWLXZRPAzB1cFgLqKWoik1CfUQWpNPNZK/6bv 5bSDinR0fJ09/Gjb2TiodgeXdel7HvfxOkLMENfWWPMRRimhkTUnjSOT0VIv1M8SLHzx TnyG4AQTinmM5EAN/WPklAs0bonKY5v6n6zQ2alqJw+cEPO+k7sWl9iPCOfBBYXNwbDy tRDBANFI1m8qzWgM64ceOD877BTcazUrPtv2eAO3yo3GcJV75qMd30dqhlXHpgQA7vuB UEIA== 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=yDMQTjX5hIj7OGELKHuMpw7yuO+EJIADPkyuUG3Ijj4=; b=oU1P7f6yKXD/Sl40OetbVzxsa7ulcjyi7c+00x9bkGPJ3RaVEDOliht9oaRRflOf/b nlUyiaJPaGvhxxXN/OIMvctDMDPVZkCAJ4GsYbfDtaBlrN/C4XBYOkSbRjl/2YeNQHaD 5/O65W/iKn3z2R13nKbJX7iov1KwHAfeAqtcilzpmUi8WqI9OMhHBplEep/MSWX/a4HX iTK3ax+5CPP83LaYgG6VWn1OkcYYeCdV1o8VTt2S4lPmSGxSmt3KVmWPV6ki3YwwlWls cJ6MeCNQg0slsGEZH+GmV2jxV7rk4dmNWR2vbsYEERytZK79TGV0wQzBaTdlfZX3BT9W IIgQ== X-Gm-Message-State: AOAM531KY7n55UZ3NlRVOpdH/+sb5u8e+Eim7bChyoURmiULK/4510Td C1hF5pADHalS8DFVWVrj4r90PLPfBsEGNsymcxcCug== X-Google-Smtp-Source: ABdhPJyFZEcaWolsVX3KYx4NcAVB9iPomhIhBvGFsuL53WU4iWQ54ZpEQL8cNcNPOOukTM6wnyBHpgHXdjwEbjfjrzo= X-Received: by 2002:a17:906:494c:: with SMTP id f12mr7394701ejt.56.1612432722582; Thu, 04 Feb 2021 01:58:42 -0800 (PST) MIME-Version: 1.0 References: <20210204014509.882821-1-richard.henderson@linaro.org> In-Reply-To: <20210204014509.882821-1-richard.henderson@linaro.org> From: Peter Maydell Date: Thu, 4 Feb 2021 09:58:30 +0000 Message-ID: Subject: Re: [PATCH v2 00/93] TCI fixes and cleanups To: Richard Henderson Content-Type: text/plain; charset="UTF-8" Received-SPF: pass client-ip=2a00:1450:4864:20::62b; envelope-from=peter.maydell@linaro.org; helo=mail-ej1-x62b.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: Stefan Weil , QEMU Developers Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Thu, 4 Feb 2021 at 01:49, Richard Henderson wrote: > > Almost 7 years ago I detailed 5 major problems in tci[1], of > which three still remain: > > * Unaligned accesses to the bytecode stream, which means > that we immediately SIGBUS on any host requiring alignment. > * Non-portable calls to helper functions. > * Full of useless ifdefs and TODOs. > > To my mind, this means the code is unmaintained, despite what it > says in MAINTAINERS. Thus tci *should* be simply removed. > However, every time removal is suggested, someone comes out of the > woodwork and says we should keep it, because it's useful for $FOO. Not listed, but also a problem: * it's a configure-time choice, not a runtime choice (Personally I'm on the "we should just remove it" side.) thanks -- PMM