From patchwork Mon Jul 6 21:13:53 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexander Duyck X-Patchwork-Id: 11646921 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id EACEF618 for ; Mon, 6 Jul 2020 21:14:45 +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 8F882206BE for ; Mon, 6 Jul 2020 21:14:45 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="pFs42xcu" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8F882206BE Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:60940 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jsYRn-0007W2-3d for patchwork-qemu-devel@patchwork.kernel.org; Mon, 06 Jul 2020 17:14:44 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:60356) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jsYR5-0006XM-55 for qemu-devel@nongnu.org; Mon, 06 Jul 2020 17:13:59 -0400 Received: from mail-pl1-x62e.google.com ([2607:f8b0:4864:20::62e]:41941) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1jsYR3-0000Ec-J7 for qemu-devel@nongnu.org; Mon, 06 Jul 2020 17:13:58 -0400 Received: by mail-pl1-x62e.google.com with SMTP id f2so15824949plr.8 for ; Mon, 06 Jul 2020 14:13:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:from:to:cc:date:message-id:user-agent:mime-version :content-transfer-encoding; bh=8drZMpZ5bnfxccFqrTd2a6dZ3UiU9Mt2eHg/kKxUFOc=; b=pFs42xcuxJZP3kwh0lBn3i3GhM774yOw6+jOXvxBcucI7fJ6chBMSXH89KvW1ZSOAB kR2EXOA1rA2iGEfgTIPq6iH3fIZtHJUV0/Oly+Tk7PX2h15657/4uuxlMHutwYOEd+cq 0fJ3d68AulHw+ZBSm3TRKZAnLI8d133t9T0M0jOiVsJfVTHYWw2ZqyPVA0hhhLxLNsI1 7/Dj2cynIQnt5SP4GQLc8LFGzP6IZKK6tG8LRHMo0m53gmk1/ycxiy//O/bRHTlmWRyK RXjBQkyEeJnKA4kUvUEjvzHS2AIaHwOttBmGW49viQXSyTbZVBEPzQJzhrj8IpFVz0dW 7FIA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:from:to:cc:date:message-id:user-agent :mime-version:content-transfer-encoding; bh=8drZMpZ5bnfxccFqrTd2a6dZ3UiU9Mt2eHg/kKxUFOc=; b=Upd2lf6E1FmB0+2x/lc0SKYmyavs1FlODzCsrKHYm+9xChVbBg0Thw7JMwPcduHB7B YCmpBRAEL30FFjuDuslDFvNu89UAuSX5io8On2eCa3yQeQelC9JS4jy+ReGTTY5CiyeB VLAW6kCTSw8UYG5gc0umCfqC3XRMe0qwET/0lnVdd80vtiCQyNQfExgo0HL0LTurcwS0 KyQhO5Uw9wE/KeKRKOTf/5nWHUrca3CZzS8XMj5toXz1GK2y8FAM6OOJGD2thghgVTjI UxW8s3ZgLCnAdpjRphmbuyopETQ9ryIo2pirs0yN1kFp6xzRpqLcepOdPDFGKoN/Iq6A Q4xg== X-Gm-Message-State: AOAM532FYvF1jf5gU/3XdPbbWpu+Flr0VOnp9LmTmGKZo9i5U3kLSZ+H KF6qmCT1HBX4PvCNRu9k6Z8= X-Google-Smtp-Source: ABdhPJxXaYuus0a3pNO85L+POfMq9MQ9fngq2pYTF1TfskYkge7Pbt8IwnGMiqFWRD2HWdUo8rmWxA== X-Received: by 2002:a17:902:bb95:: with SMTP id m21mr2224750pls.41.1594070035438; Mon, 06 Jul 2020 14:13:55 -0700 (PDT) Received: from localhost.localdomain ([2001:470:b:9c3:9e5c:8eff:fe4f:f2d0]) by smtp.gmail.com with ESMTPSA id k71sm361975pje.33.2020.07.06.14.13.54 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Mon, 06 Jul 2020 14:13:54 -0700 (PDT) Subject: [PATCH v2 0/3] virtio-balloon: Free page hinting clean-ups From: Alexander Duyck To: david@redhat.com, mst@redhat.com Date: Mon, 06 Jul 2020 14:13:53 -0700 Message-ID: <20200706211314.20018.89695.stgit@localhost.localdomain> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::62e; envelope-from=alexander.duyck@gmail.com; helo=mail-pl1-x62e.google.com X-detected-operating-system: by eggs.gnu.org: No matching host in p0f cache. That's all we know. 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, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=_AUTOLEARN 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: virtio-dev@lists.oasis-open.org, qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" This series contains a couple minor cleanups related to free page hinting. The first patch addresses what I believe is a possible issue in which the driver could potentially force the device out of the stop state and back into the running state if it were to replay an earlier virtqueue element containing the same ID it had submitted earlier. The second patch takes care of a possible race due to a mutex lock not being used when starting the hinting from the device-side. The final patch takes care of renaming various hinting objects that were using "reporting" in the name to try and clarify which objects are for free page reporting and which are for free page hinting. Changes from v1: Split first patch into two patches as each addresses a separate issue. Added acked-by for first patch. --- Alexander Duyck (3): virtio-balloon: Prevent guest from starting a report when we didn't request one virtio-balloon: Add locking to prevent possible race when starting hinting virtio-balloon: Replace free page hinting references to 'report' with 'hint' hw/virtio/virtio-balloon.c | 77 +++++++++++++++++++----------------- include/hw/virtio/virtio-balloon.h | 20 +++++---- 2 files changed, 51 insertions(+), 46 deletions(-) --