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=-8.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=ham 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 B2D29C433F5 for ; Mon, 20 Sep 2021 20:03:48 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (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 6373961244 for ; Mon, 20 Sep 2021 20:03:48 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 6373961244 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=tklengyel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=lists.xenproject.org Received: from list by lists.xenproject.org with outflank-mailman.191179.341117 (Exim 4.92) (envelope-from ) id 1mSPVj-0006YU-PT; Mon, 20 Sep 2021 20:03:31 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 191179.341117; Mon, 20 Sep 2021 20:03:31 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1mSPVj-0006YN-Ly; Mon, 20 Sep 2021 20:03:31 +0000 Received: by outflank-mailman (input) for mailman id 191179; Mon, 20 Sep 2021 20:03:29 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1mSPVh-0006YH-LB for xen-devel@lists.xenproject.org; Mon, 20 Sep 2021 20:03:29 +0000 Received: from MTA-10-3.privateemail.com (unknown [198.54.127.62]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id d0484fb3-9dde-4439-b480-1c86ab7bfb28; Mon, 20 Sep 2021 20:03:28 +0000 (UTC) Received: from mta-10.privateemail.com (localhost [127.0.0.1]) by mta-10.privateemail.com (Postfix) with ESMTP id E279A18000A7 for ; Mon, 20 Sep 2021 16:03:27 -0400 (EDT) Received: from mail-wr1-f47.google.com (unknown [10.20.151.216]) by mta-10.privateemail.com (Postfix) with ESMTPA id C9FD118000A2 for ; Mon, 20 Sep 2021 16:03:27 -0400 (EDT) Received: by mail-wr1-f47.google.com with SMTP id u15so32991155wru.6 for ; Mon, 20 Sep 2021 13:03:27 -0700 (PDT) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: d0484fb3-9dde-4439-b480-1c86ab7bfb28 X-Gm-Message-State: AOAM531d71lQXRgY8EBczaGCGZBAt02YdjXURZRXroeMTIeDV7vKnDy7 SJ/wxJDVjXOD2lCgsj3uGbEZXYS/wJaRCg/jjRE= X-Google-Smtp-Source: ABdhPJwvpkjCnukkyOje3BkMgoiVojuuPg7T7q9NqAW24I5VHt1EYytFGkYYZjvRRELjVCZLu+OkUB1mSRjSRI9FxAA= X-Received: by 2002:a05:6000:d2:: with SMTP id q18mr7482121wrx.4.1632168206522; Mon, 20 Sep 2021 13:03:26 -0700 (PDT) MIME-Version: 1.0 References: <8fa3c3e10446f99b75e3d4aef10624cfa2fdf72c.1632145015.git.tamas.lengyel@intel.com> <342dd9a2-88b3-34d5-d2ee-b288f8d81f5e@suse.com> In-Reply-To: <342dd9a2-88b3-34d5-d2ee-b288f8d81f5e@suse.com> From: Tamas K Lengyel Date: Mon, 20 Sep 2021 16:02:50 -0400 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: [PATCH v2] x86/mem_sharing: don't lock parent during fork reset To: Jan Beulich Cc: Tamas K Lengyel , Andrew Cooper , George Dunlap , =?UTF-8?Q?Roger_Pau_Monn=C3=A9?= , Wei Liu , Xen-devel Content-Type: text/plain; charset="UTF-8" X-Virus-Scanned: ClamAV using ClamSMTP On Mon, Sep 20, 2021 at 10:15 AM Jan Beulich wrote: > > On 20.09.2021 15:40, Tamas K Lengyel wrote: > > During fork reset operation the parent domain doesn't need to be gathered using > > rcu_lock_live_remote_domain_by_id, the fork already has the parent pointer. > > > > Signed-off-by: Tamas K Lengyel > > Reviewed-by: Jan Beulich Thanks!