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=-8.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 9234CC07E96 for ; Thu, 15 Jul 2021 12:31:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 76C2E6136E for ; Thu, 15 Jul 2021 12:31:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237311AbhGOMes (ORCPT ); Thu, 15 Jul 2021 08:34:48 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:43170 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229595AbhGOMeq (ORCPT ); Thu, 15 Jul 2021 08:34:46 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1626352313; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Lji8HOqs9rmdC3egSrWXR+ndAD3kQJhFKEhduaBBTA0=; b=c5uySOcv8tcqdqlogt9pNXXq5lDhqcu02Ct2u8oenaQ8ou5Njlgqo6QRaMSj3s1gC47KzE 8Qed79lbNbPzKEworfUNvF+QUw0Ec83atYwUq0JsWmG0d7twG7dz2sjOBEh7roQXTeD0jc 73EB+SyQHLdQx1ot79zKb4nUjYis+UM= Received: from mail-ej1-f72.google.com (mail-ej1-f72.google.com [209.85.218.72]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-398-XqaVlvNPNEO-wSRj9VOfXQ-1; Thu, 15 Jul 2021 08:31:50 -0400 X-MC-Unique: XqaVlvNPNEO-wSRj9VOfXQ-1 Received: by mail-ej1-f72.google.com with SMTP id r10-20020a170906350ab02904f12f4a8c69so2149954eja.12 for ; Thu, 15 Jul 2021 05:31:49 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=Lji8HOqs9rmdC3egSrWXR+ndAD3kQJhFKEhduaBBTA0=; b=D3mctoapoY4eT6dwn34s2svb/ekA3NNxfKVFlPx2tMblHhfJQx0rE2GJ56H1XGCnnd NA+GfYr1aRik9pmfRTe60xKh9zNDEjaLI1ngDvaPyQRoYcSHbdPbyeqeUXqufsGW1X+6 bm6PRedC9l3fgQAodwo69RzSRIit3h5nkMqeeyuvNJ1CPcqEWAlLr29qHbXGRbyo9P1p zKHywIlSE3CjMGZlKy4GFGOA/aIBKZjlDW2XvvaCZaUYbMDe+XDxZDRd6iIiVSY4KSvk ask5xr69JvaeO3z5+PvwGCKE2TtCFrz6ja9DHN7Lgmlz0aS5lqr1jTJ9mVKM27ZsaQta NILw== X-Gm-Message-State: AOAM5317Hq1eN6T6G541rnHbQJtMN+sxgmTL85t49hnP+xhrttqFiwM6 ROm+Z9nPOpmHAyCeu6qBX1CgeVkiSXUYeNbaNRKlsz6WocjAbMRtakPjISlA1rdHfHtnBhsw92R /pgr8GACuhCgrtSqAXx1khtMn X-Received: by 2002:a17:906:2a08:: with SMTP id j8mr5285341eje.449.1626352308962; Thu, 15 Jul 2021 05:31:48 -0700 (PDT) X-Google-Smtp-Source: ABdhPJw0EaEWiFne4OQJDl26qvYKYWhC9EgViZlqFlUaqtigTo9I0Fa/9MOFWVCHvzl0cKjP4odhgA== X-Received: by 2002:a17:906:2a08:: with SMTP id j8mr5285318eje.449.1626352308710; Thu, 15 Jul 2021 05:31:48 -0700 (PDT) Received: from x1.bristot.me (host-79-37-206-118.retail.telecomitalia.it. [79.37.206.118]) by smtp.gmail.com with ESMTPSA id t6sm2319933edd.3.2021.07.15.05.31.47 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 15 Jul 2021 05:31:48 -0700 (PDT) Subject: Re: 5.13-rt1 + KVM = WARNING: at fs/eventfd.c:74 eventfd_signal() To: Hillf Danton Cc: Paolo Bonzini , Jason Wang , Thomas Gleixner , Sebastian Andrzej Siewior , "Michael S. Tsirkin" , Juri Lelli , LKML , Al Viro , He Zhe References: <8dfc0ee9-b97a-8ca8-d057-31c8cad3f5b6@redhat.com> <475f84e2-78ee-1a24-ef57-b16c1f2651ed@redhat.com> <20210715102249.2205-1-hdanton@sina.com> From: Daniel Bristot de Oliveira Message-ID: <92933731-46aa-b5d8-72dd-0d05c0266f45@redhat.com> Date: Thu, 15 Jul 2021 14:31:46 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.11.0 MIME-Version: 1.0 In-Reply-To: <20210715102249.2205-1-hdanton@sina.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 7/15/21 12:22 PM, Hillf Danton wrote: >> the lock needs to be per-pcu... but so far, so good. I will continue using the >> system in the next days to see if it blows on another way. > Curiou, is it so good as to see the warning no longer printed? Or your > box still works even with the warning in log? > Without the patch: - warn on dmesg - I lose my connection with VM (as a side effect) With the patch: - no warn - continue using the VM normally... -- Daniel