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 E826BC64EC7 for ; Tue, 28 Feb 2023 17:58:10 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1pX4Eb-0005zy-GW; Tue, 28 Feb 2023 12:57:53 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pX4ES-0005xN-5F for qemu-devel@nongnu.org; Tue, 28 Feb 2023 12:57:47 -0500 Received: from mail-wm1-x32e.google.com ([2a00:1450:4864:20::32e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1pX4EP-00054H-JF for qemu-devel@nongnu.org; Tue, 28 Feb 2023 12:57:42 -0500 Received: by mail-wm1-x32e.google.com with SMTP id j19-20020a05600c1c1300b003e9b564fae9so10189254wms.2 for ; Tue, 28 Feb 2023 09:57:41 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=content-transfer-encoding:mime-version:message-id:in-reply-to:date :subject:cc:to:from:user-agent:references:from:to:cc:subject:date :message-id:reply-to; bh=N0gh65sRUhsA2cQW+O5nyV56sqnxNUp7wWGO78elrfk=; b=Q2ILYkStOLzqlhPQ/lOwHLaZarYNtBP1rP6088k6KHEiFYADCUnE956ohoQOTPCd+S On7OUyA8W8KEDiF+2Ac3z76B4l5s4fxZRg0c6pfo+VomIYMZMDN4NAXJj2r4gKGGwQMD qLmgHeDrFRhVY8nTyMOuFMej4OqJicpF7HPvUUUE1No2IbuSJM0uyuijwfDPXfuUk7tl cxfML1Ar+BHn9QgeWjLrEvKMagpyfzTxMpJg5BcPu8RcnP4mJCs8pVJUiMADFi6bL9hg 0wOyjvoAyNdk2NSmMwzZceureFlOcv/ckfzgMVk5SK+G0ezMl2xWTGE2kK/46nGX3gPJ Shlg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:message-id:in-reply-to:date :subject:cc:to:from:user-agent:references:x-gm-message-state:from:to :cc:subject:date:message-id:reply-to; bh=N0gh65sRUhsA2cQW+O5nyV56sqnxNUp7wWGO78elrfk=; b=flSSpPElLh0ftOBdbqhlvuTwYkkHzEp2B+sjONGAosF/ZT8OaGXFQM60fJ7wnjKsB7 ZyHvPEY1UUBQQmn3Wd/Y1sVTKbwGJnZ3b7O/rKqxlt5pS+HTw1wj6z9DiTiObdAZ0VIx 2ohZdHML8cqM07Bsk4ZTiDHcQWN02BGpOmD/ToWXQA5qxDP/7HLv+2p7SzuirXUWDNuC L63cqhEjI4dHftY1WPUsPCqRMbPJqJqt1CATCEdgLVUKz2d9RjI/7NAIf2+YufVj78WB 2rEyh9bu2U4d/cRqHPDG/FgGc0zMu/JCzMz8jjSAJ2aTbNA7JSOkE6gD1Wm19/CiZ36r 064w== X-Gm-Message-State: AO0yUKUjSJyQCnciM3QQFgQBHFLhQQHcCN+A+dwkOh0pyTWFlk1aShQv CYHiFyEHXW0E5eNUA86E0gnc63kaVdCW+WBW X-Google-Smtp-Source: AK7set/Dt/NJyggFxsL1D4/ePBvyzIBpIHzMDdpUr1GxP6HJYbDLQWFofd4JN5Z/HnoVK39kCTg6Jw== X-Received: by 2002:a05:600c:1894:b0:3ea:d610:f068 with SMTP id x20-20020a05600c189400b003ead610f068mr2643212wmp.33.1677607059512; Tue, 28 Feb 2023 09:57:39 -0800 (PST) Received: from zen.linaroharston ([85.9.250.243]) by smtp.gmail.com with ESMTPSA id f5-20020a1c6a05000000b003d9aa76dc6asm16693417wmc.0.2023.02.28.09.57.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 28 Feb 2023 09:57:39 -0800 (PST) Received: from zen (localhost [127.0.0.1]) by zen.linaroharston (Postfix) with ESMTP id D348B1FFB7; Tue, 28 Feb 2023 17:57:38 +0000 (GMT) References: <20230216025739.1211680-1-richard.henderson@linaro.org> <20230216025739.1211680-4-richard.henderson@linaro.org> User-agent: mu4e 1.9.21; emacs 29.0.60 From: Alex =?utf-8?Q?Benn=C3=A9e?= To: Richard Henderson Cc: qemu-devel@nongnu.org Subject: Re: [PATCH v2 03/30] accel/tcg: Add cpu_in_serial_context Date: Tue, 28 Feb 2023 17:57:28 +0000 In-reply-to: <20230216025739.1211680-4-richard.henderson@linaro.org> Message-ID: <87r0u9ekq5.fsf@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Received-SPF: pass client-ip=2a00:1450:4864:20::32e; envelope-from=alex.bennee@linaro.org; helo=mail-wm1-x32e.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: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Richard Henderson writes: > Like cpu_in_exclusive_context, but also true if > there is no other cpu against which we could race. > > Use it in tb_flush as a direct replacement. > Use it in cpu_loop_exit_atomic to ensure that there > is no loop against cpu_exec_step_atomic. > > Signed-off-by: Richard Henderson Reviewed-by: Alex Benn=C3=A9e --=20 Alex Benn=C3=A9e Virtualisation Tech Lead @ Linaro