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=-5.1 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 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 96014C433DF for ; Thu, 21 May 2020 12:53:12 +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 5855A2078B for ; Thu, 21 May 2020 12:53:12 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=xen.org header.i=@xen.org header.b="bt1gMViv" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5855A2078B Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=xen.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=xen-devel-bounces@lists.xenproject.org Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jbkgt-000648-Ll; Thu, 21 May 2020 12:52:51 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jbkgr-000640-Se for xen-devel@lists.xenproject.org; Thu, 21 May 2020 12:52:49 +0000 X-Inumbo-ID: f9471c50-9b61-11ea-aafe-12813bfff9fa Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id f9471c50-9b61-11ea-aafe-12813bfff9fa; Thu, 21 May 2020 12:52:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=xen.org; s=20200302mail; h=Content-Transfer-Encoding:Content-Type:In-Reply-To: MIME-Version:Date:Message-ID:From:References:Cc:To:Subject:Sender:Reply-To: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=GHqK/6rEcspyvA2fOvyIWaP4KczkSAzGrqmCF/pcafQ=; b=bt1gMVivDPWmAtfFYTolRw6U1L JHXlTrI0Qj/CkK6gi5dS1unxEWyXPFj9opMF1QO32U26IgrFz6VuyYm6PEhpOmjiHTgW6RFsQVMJ4 sc8IWsfWWeq9w1QEaQXUH7Am3Z4VG2mvR04jt7/x0TiR3bsV0XmFfyBSq4PdX/Hfrfdg=; Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jbkgk-0001to-HH; Thu, 21 May 2020 12:52:42 +0000 Received: from 54-240-197-225.amazon.com ([54.240.197.225] helo=a483e7b01a66.ant.amazon.com) by xenbits.xenproject.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.89) (envelope-from ) id 1jbkgk-0004wa-AJ; Thu, 21 May 2020 12:52:42 +0000 Subject: Re: [PATCH v10 09/12] xen: add runtime parameter access support to hypfs To: Juergen Gross , xen-devel@lists.xenproject.org References: <20200519072106.26894-1-jgross@suse.com> <20200519072106.26894-10-jgross@suse.com> From: Julien Grall Message-ID: Date: Thu, 21 May 2020 13:52:39 +0100 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:68.0) Gecko/20100101 Thunderbird/68.8.0 MIME-Version: 1.0 In-Reply-To: <20200519072106.26894-10-jgross@suse.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-GB Content-Transfer-Encoding: 7bit X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: Kevin Tian , Stefano Stabellini , Jun Nakajima , Wei Liu , Andrew Cooper , Ian Jackson , George Dunlap , Jan Beulich , Volodymyr Babchuk , =?UTF-8?Q?Roger_Pau_Monn=c3=a9?= Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" Hi Juergen, On 19/05/2020 08:21, Juergen Gross wrote: > Add support to read and modify values of hypervisor runtime parameters > via the hypervisor file system. > > As runtime parameters can be modified via a sysctl, too, this path has > to take the hypfs rw_lock as writer. > > For custom runtime parameters the connection between the parameter > value and the file system is done via an init function which will set > the initial value (if needed) and the leaf properties. > > Signed-off-by: Juergen Gross > Reviewed-by: Jan Beulich Acked-by: Julien Grall Cheers, -- Julien Grall