From patchwork Tue Jan 26 19:03:16 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefano Stabellini X-Patchwork-Id: 12047871 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=-12.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 79BCFC433DB for ; Tue, 26 Jan 2021 19:03:35 +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 288CD206CC for ; Tue, 26 Jan 2021 19:03:35 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 288CD206CC Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.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.75437.135833 (Exim 4.92) (envelope-from ) id 1l4TcX-0004k7-2y; Tue, 26 Jan 2021 19:03:21 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 75437.135833; Tue, 26 Jan 2021 19:03:21 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1l4TcW-0004k0-W5; Tue, 26 Jan 2021 19:03:20 +0000 Received: by outflank-mailman (input) for mailman id 75437; Tue, 26 Jan 2021 19:03:19 +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 1l4TcV-0004ju-PD for xen-devel@lists.xenproject.org; Tue, 26 Jan 2021 19:03:19 +0000 Received: from mail.kernel.org (unknown [198.145.29.99]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 76416527-7cb8-4742-a0eb-13ec3c2d8573; Tue, 26 Jan 2021 19:03:18 +0000 (UTC) Received: by mail.kernel.org (Postfix) with ESMTPSA id 874F522228; Tue, 26 Jan 2021 19:03:17 +0000 (UTC) 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: 76416527-7cb8-4742-a0eb-13ec3c2d8573 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1611687797; bh=CxdOm18QcjTByBOTXeDr+9j8JHLf6CUwJm+1nREHE5E=; h=Date:From:To:cc:Subject:From; b=QF1rFAJTsdyivFvbzd9fhnlQNj5LCk5C24fOWhe+dVTTc47fvfDQAZNuY6Ju7g2TS KnddDIlHO5tT6hh1hMqLaktwaUaIow/StJnyVFpAVJ0Py4O9CmdQBi8axvyhXVnWvg m/IsG04mqGq1EY3gwN3Zrp/bBjZWM0akFpOtay8eBb1J8nFry9vNjLeZKw+WYCg/2O wYi9y/xC50iWkGxdYe9d61iEqkSa9ExXJjLGX/TUEy7i8qJ6OTXe+bRpeqMQb3Xniu JXVhv82/HZJLdzUBUecc7+FCwH58JV7glb5pdh5kScNhx21zBrtqd9xq52aUiaJ8Tn z/iqbLW2T/6/g== Date: Tue, 26 Jan 2021 11:03:16 -0800 (PST) From: Stefano Stabellini X-X-Sender: sstabellini@sstabellini-ThinkPad-T480s To: xen-devel@lists.xenproject.org cc: sstabellini@kernel.org, andrew.cooper3@citrix.com, george.dunlap@citrix.com, iwj@xenproject.org, jbeulich@suse.com, julien@xen.org, wl@xen.org Subject: [PATCH v5 0/2] introduce UNSUPPORTED Message-ID: User-Agent: Alpine 2.21 (DEB 202 2017-01-01) MIME-Version: 1.0 Hi all, A recent thread [1] has exposed a couple of issues with our current way of handling EXPERT. 1) It is not obvious that "Configure standard Xen features (expert users)" is actually the famous EXPERT we keep talking about on xen-devel 2) It is not obvious when we need to enable EXPERT to get a specific feature In particular if you want to enable ACPI support so that you can boot Xen on an ACPI platform, you have to enable EXPERT first. But searching through the kconfig menu it is really not clear (type '/' and "ACPI"): nothing in the description tells you that you need to enable EXPERT to get the option. This series makes things easier by doing the following: - introduce a new kconfig option UNSUPPORTED which is clearly to enable UNSUPPORTED features as defined by SUPPORT.md - change EXPERT options to UNSUPPORTED where it makes sense: keep depending on EXPERT for features made for experts - tag unsupported features by adding (UNSUPPORTED) to the one-line description - clarify the EXPERT one-line description [1] https://marc.info/?l=xen-devel&m=160333101228981 Cheers, Stefano Stefano Stabellini (2): xen: EXPERT clean-up and introduce UNSUPPORTED xen: add (EXPERT) to one-line description of XEN_SHSTK xen/Kconfig | 11 ++++++++++- xen/arch/arm/Kconfig | 6 +++--- xen/arch/x86/Kconfig | 8 ++++---- xen/common/Kconfig | 2 +- xen/common/sched/Kconfig | 6 +++--- 5 files changed, 21 insertions(+), 12 deletions(-)