From patchwork Mon Jan 25 21:27:38 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefano Stabellini X-Patchwork-Id: 12044389 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 6B821C433E6 for ; Mon, 25 Jan 2021 21:28:04 +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 F33F2208C7 for ; Mon, 25 Jan 2021 21:28:03 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org F33F2208C7 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.74506.133940 (Exim 4.92) (envelope-from ) id 1l49Oh-00080P-5e; Mon, 25 Jan 2021 21:27:43 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 74506.133940; Mon, 25 Jan 2021 21:27:43 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1l49Oh-00080I-2Y; Mon, 25 Jan 2021 21:27:43 +0000 Received: by outflank-mailman (input) for mailman id 74506; Mon, 25 Jan 2021 21:27:41 +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 1l49Of-00080D-Pw for xen-devel@lists.xenproject.org; Mon, 25 Jan 2021 21:27:41 +0000 Received: from mail.kernel.org (unknown [198.145.29.99]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 448583ee-dc51-4a2b-8be9-999e21168847; Mon, 25 Jan 2021 21:27:41 +0000 (UTC) Received: by mail.kernel.org (Postfix) with ESMTPSA id AFB422083E; Mon, 25 Jan 2021 21:27:39 +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: 448583ee-dc51-4a2b-8be9-999e21168847 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1611610060; bh=qqeqBYELeNSc0TmPXJE2Qaq2UbaTLYybJ5PHON6WvsM=; h=Date:From:To:cc:Subject:From; b=qAN992bTrcV7WcGxgGy36jtzrH5GsRzG5xSHVTaYj5JZ1+UOTm7BrkrMAx8oBpJ2/ /YbbHNvu4ONbpmlXRSw/9MFAEtgdnWPMfaA76rc13ST6jPLSuKSr3HswBQ9hgAHvIr FD48Jle9xhfTEZNG1WKvJnbVzVyiDvLEX3AQd/I2inC1gd9A7abWXvRq7FVFV3vHmq wfx9+ss4pKpEXHjVZnzoacauslnKEQxIbFLk5CKbAOTWs/sbWbWhwu8oTPYIGkZF6J zCidUCQwVMDNtXTs+P92ElkcPu5dFHot8ftubHWF8AeGXMxZoFBMjQ+rpO6rSzdULO c8szBbQaFvEmg== Date: Mon, 25 Jan 2021 13:27:38 -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 v4 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 descriptions when appropriate xen/Kconfig | 11 ++++++++++- xen/arch/arm/Kconfig | 10 +++++----- xen/arch/x86/Kconfig | 8 ++++---- xen/common/Kconfig | 14 +++++++------- xen/common/sched/Kconfig | 8 ++++---- 5 files changed, 30 insertions(+), 21 deletions(-)