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=-7.3 required=3.0 tests=BAYES_00,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 C619EC4361B for ; Wed, 9 Dec 2020 16:24:58 +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 4D65B23BDF for ; Wed, 9 Dec 2020 16:24:58 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4D65B23BDF 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 list by lists.xenproject.org with outflank-mailman.48518.85814 (Exim 4.92) (envelope-from ) id 1kn2Ge-000607-Us; Wed, 09 Dec 2020 16:24:40 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 48518.85814; Wed, 09 Dec 2020 16:24:40 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1kn2Ge-000600-RK; Wed, 09 Dec 2020 16:24:40 +0000 Received: by outflank-mailman (input) for mailman id 48518; Wed, 09 Dec 2020 16:24:39 +0000 Received: from mail.xenproject.org ([104.130.215.37]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1kn2Gd-0005zt-5o for xen-devel@lists.xenproject.org; Wed, 09 Dec 2020 16:24:39 +0000 Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1kn2Gb-0004RF-8p; Wed, 09 Dec 2020 16:24:37 +0000 Received: from [54.239.6.185] (helo=a483e7b01a66.ant.amazon.com) by xenbits.xenproject.org with esmtpsa (TLS1.3:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.92) (envelope-from ) id 1kn2Gb-0000Ae-0N; Wed, 09 Dec 2020 16:24:37 +0000 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" 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; bh=CrduSadRGWxDmlUA9cyM3OxNjxcP51vGA77Oa/Mm+pc=; b=K/aYP80xERl8bFO3fxINkKXKfu MosNRQbijFi0EWj9mGpFyej/8hICDFgxmhG+ARLmD5nWAu/xKAy5hrh0ob75E+z5MHzQe0MIExFtm JZcDovgMR6D7B1FL0EyPTTek3tya6b4QoYdvK5imF7SWYti4ZY7icsmWnKcwMl47uI00=; Subject: Re: [PATCH RFC 0/3] xen: add hypfs per-domain abi-features To: Juergen Gross , xen-devel@lists.xenproject.org Cc: paul@xen.org, Andrew Cooper , George Dunlap , Ian Jackson , Jan Beulich , Stefano Stabellini , Wei Liu References: <20201209161618.309-1-jgross@suse.com> From: Julien Grall Message-ID: Date: Wed, 9 Dec 2020 16:24:32 +0000 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:78.0) Gecko/20100101 Thunderbird/78.5.1 MIME-Version: 1.0 In-Reply-To: <20201209161618.309-1-jgross@suse.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-GB Content-Transfer-Encoding: 7bit Hi, On 09/12/2020 16:16, Juergen Gross wrote: > This small series is meant as an example how to add further dynamical > directories to hypfs. It can be used to replace Paul's current approach > to specify ABI-features via domain create flags and replace those by > hypfs nodes. This can only work if all the ABI-features are not required at the time of creating the domain. Those features should also be set only once. Furthermore, HYPFS is so far meant to be optional. So it feels to me Paul's approach is leaner and better for the ABI-features purpose. Cheers, -- Julien Grall