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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 16766C433F5 for ; Mon, 7 Feb 2022 18:36:04 +0000 (UTC) Received: from localhost ([::1]:36758 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nH8rq-00008m-48 for qemu-devel@archiver.kernel.org; Mon, 07 Feb 2022 13:36:03 -0500 Received: from eggs.gnu.org ([209.51.188.92]:34756) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nH8nH-00045g-DQ for qemu-devel@nongnu.org; Mon, 07 Feb 2022 13:31:20 -0500 Received: from [2a00:1450:4864:20::42c] (port=38761 helo=mail-wr1-x42c.google.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1nH8n0-0001GR-Sm for qemu-devel@nongnu.org; Mon, 07 Feb 2022 13:31:18 -0500 Received: by mail-wr1-x42c.google.com with SMTP id s10so23852952wra.5 for ; Mon, 07 Feb 2022 10:30:50 -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=wOg+MvgnOce7tLr8HTzYEHi5urgP9pqg7d7vtoZkTDk=; b=yPksd/HRg3xCixhnU2Wl/TYEm8hyhNdDPEVXByb4eUfrzOW9RDDjh0DErG1nSDQazB V9M/hyJKBELrWBFt/sWrx2viWzboA7sAQiJghPW2l2BH7pAAA6qbNgVQ5S6/XKtE6GLz D/2wd5bI0EPOO4AsOoc7rh6HklU9zjHApR2joOTXxIjBlxdNn3b1GM29hzpo8qKeUISc 6nMOGql0Demq0s7GzJvBvbkAmls+IwuhcxYWSK8ZNcod0DhJtb7UowWSdhNRmtNwcuMB fvbIY6rUTcR/DZaqsamn7iAQs13rgg+62hE1De0gRunJePp0LslCPURSzVj+QDJgT1dM Bktg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=wOg+MvgnOce7tLr8HTzYEHi5urgP9pqg7d7vtoZkTDk=; b=7kvYu2kktLMrojqo/dSW+EtEB5xKkVEK1O5F4k8rG0iiGawb5DdzowXzQvu7ayF7yH G1BZ1171J8k5XogPGh67ckSgpR3Kj2E5F90VmJHpMX3dn5Q1PHsZKC3McbXFkxSSx0ZN Myh5uyaYus+RLGzHlRMNXUDWbl8qBYHYyeAPAiG8qop96wVaBZniWDk0cqCZSnteeq9J u3apFS+r8dNhC1wzQHz3NbNVDFgLoj9Xv6coM6muqKmP4S+k4ekXmxJg8y2FTxN01nlB luvKq47LaIQvl20m8P/rIs7n2HoMthd6biHZA59jau6h76qzBKxAUtBwm53AD7kWTR/o liMA== X-Gm-Message-State: AOAM533GjPnyoavtZUImjNLjtlr3aTPVrQEmz2q/3lWE4D6+2PjH2juo B2TYTHXJpPKMkOg+PDLHvJxjnu2FHlSeyICo90dN6Q== X-Google-Smtp-Source: ABdhPJxaipUfPGjA3ck6snSDs4i531QAOqz3MnDVTtJ2hPxyiLHfqk5uH3cmwjxVJtCIUcKtrvT1de5a/5fhueLX55w= X-Received: by 2002:adf:a51b:: with SMTP id i27mr624772wrb.172.1644258649130; Mon, 07 Feb 2022 10:30:49 -0800 (PST) MIME-Version: 1.0 References: <20220206103138.36105-1-richard.henderson@linaro.org> <20220206103138.36105-7-richard.henderson@linaro.org> In-Reply-To: <20220206103138.36105-7-richard.henderson@linaro.org> From: Peter Maydell Date: Mon, 7 Feb 2022 18:30:38 +0000 Message-ID: Subject: Re: [PATCH v5 6/6] tcg/sparc: Support unaligned access for user-only To: Richard Henderson Content-Type: text/plain; charset="UTF-8" X-Host-Lookup-Failed: Reverse DNS lookup failed for 2a00:1450:4864:20::42c (failed) Received-SPF: pass client-ip=2a00:1450:4864:20::42c; envelope-from=peter.maydell@linaro.org; helo=mail-wr1-x42c.google.com X-Spam_score_int: -12 X-Spam_score: -1.3 X-Spam_bar: - X-Spam_report: (-1.3 / 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, PDS_HP_HELO_NORDNS=0.001, RDNS_NONE=0.793, SPF_HELO_NONE=0.001, T_SCC_BODY_TEXT_LINE=-0.01, T_SPF_TEMPERROR=0.01 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Sun, 6 Feb 2022 at 10:31, Richard Henderson wrote: > > This is kinda sorta the opposite of the other tcg hosts, where > we get (normal) alignment checks for free with host SIGBUS and > need to add code to support unaligned accesses. > > This inline code expansion is somewhat large, but it takes quite > a few instructions to make a function call to a helper anyway. > > Signed-off-by: Richard Henderson > --- Reviewed-by: Peter Maydell thanks -- PMM