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=-9.3 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,SIGNED_OFF_BY, 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 5C73CC433DF for ; Wed, 29 Jul 2020 19:42:04 +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 29AB0206D4 for ; Wed, 29 Jul 2020 19:42:04 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 29AB0206D4 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=suse.com 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 1k0rxG-0007E9-Ne; Wed, 29 Jul 2020 19:41:34 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1k0rxF-0007E4-4E for xen-devel@lists.xenproject.org; Wed, 29 Jul 2020 19:41:33 +0000 X-Inumbo-ID: 80e14378-d1d3-11ea-8ccf-bc764e2007e4 Received: from mx2.suse.de (unknown [195.135.220.15]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 80e14378-d1d3-11ea-8ccf-bc764e2007e4; Wed, 29 Jul 2020 19:41:32 +0000 (UTC) X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 5FF07ADD9; Wed, 29 Jul 2020 19:41:43 +0000 (UTC) Subject: Re: [PATCH 1/5] xen/memory: Introduce CONFIG_ARCH_ACQUIRE_RESOURCE To: Andrew Cooper References: <20200728113712.22966-1-andrew.cooper3@citrix.com> <20200728113712.22966-2-andrew.cooper3@citrix.com> From: Jan Beulich Message-ID: <49ceef5f-e353-c7ef-1e8e-0a0c10643304@suse.com> Date: Wed, 29 Jul 2020 21:41:32 +0200 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <20200728113712.22966-2-andrew.cooper3@citrix.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US 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: Hubert Jasudowicz , Stefano Stabellini , Julien Grall , Wei Liu , Paul Durrant , =?UTF-8?Q?Micha=c5=82_Leszczy=c5=84ski?= , Xen-devel , Volodymyr Babchuk , =?UTF-8?Q?Roger_Pau_Monn=c3=a9?= Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" On 28.07.2020 13:37, Andrew Cooper wrote: > New architectures shouldn't be forced to implement no-op stubs for unused > functionality. > > Introduce CONFIG_ARCH_ACQUIRE_RESOURCE which can be opted in to, and provide > compatibility logic in xen/mm.h > > No functional change. > > Signed-off-by: Andrew Cooper Acked-by: Jan Beulich