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=-7.6 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 0D825C07E95 for ; Tue, 13 Jul 2021 14:19:21 +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 CB9E06128B for ; Tue, 13 Jul 2021 14:19:20 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CB9E06128B 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.155402.286866 (Exim 4.92) (envelope-from ) id 1m3JFg-0001eh-Jo; Tue, 13 Jul 2021 14:19:12 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 155402.286866; Tue, 13 Jul 2021 14:19:12 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1m3JFg-0001ea-GZ; Tue, 13 Jul 2021 14:19:12 +0000 Received: by outflank-mailman (input) for mailman id 155402; Tue, 13 Jul 2021 14:19:11 +0000 Received: from mail.xenproject.org ([104.130.215.37]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1m3JFf-0001eU-FD for xen-devel@lists.xenproject.org; Tue, 13 Jul 2021 14:19:11 +0000 Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1m3JFb-0006wk-Vf; Tue, 13 Jul 2021 14:19:07 +0000 Received: from [54.239.6.178] (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 1m3JFb-00047y-PF; Tue, 13 Jul 2021 14:19:07 +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=f+XN0xR8iXaoRMZld8LT3jZGzJZyV2/UgdteyhFi9HA=; b=gFxcbEamk3xRask1fhfNkoqzuE DHSm42J0x1Ioa9hQYNvNXlUdQC1dO+SYYqEpcjSdzgRLlszKHG/ijFFSV0rKXLZfM1Fq9xNahw5BN zPfncpe32DdXQ0w5rxYhJ6e+UPWLBNyah/o/mFtUdQVGiod6esnyL0R8qZTxWT4msCOE=; Subject: Re: [PATCH] stubdom: foreignmemory: Fix build after 0dbb4be739c5 To: Jan Beulich , Juergen Gross Cc: Julien Grall , Ian Jackson , Wei Liu , xen-devel@lists.xenproject.org, Andrew Cooper , Costin Lupu References: <20210713092019.7379-1-julien@xen.org> <0698e4b1-8fb9-919e-e9a2-1b135a808e3e@suse.com> <756ba923-17a6-0889-cc7e-bcd43a5eb258@citrix.com> <3505f2da-4c41-f5ca-d775-814d038d5bad@xen.org> <3c819563-b354-5527-050d-f698324d6021@xen.org> <65d35862-304c-7fe3-82de-3ff62f06529a@suse.com> <40c00267-60d2-c0fc-cde4-8ac4ce936f87@suse.com> From: Julien Grall Message-ID: Date: Tue, 13 Jul 2021 15:19:05 +0100 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:78.0) Gecko/20100101 Thunderbird/78.11.0 MIME-Version: 1.0 In-Reply-To: <40c00267-60d2-c0fc-cde4-8ac4ce936f87@suse.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-GB Content-Transfer-Encoding: 7bit Hi Jan, On 13/07/2021 15:14, Jan Beulich wrote: >> And I don't think it should be named XC_PAGE_*, but rather XEN_PAGE_*. > > Even that doesn't seem right to me, at least in principle. There shouldn't > be a build time setting when it may vary at runtime. IOW on Arm I think a > runtime query to the hypervisor would be needed instead. Yes, we want to be able to use the same userspace/OS without rebuilding to a specific hypervisor page size. > And thinking > even more generally, perhaps there could also be mixed (base) page sizes > in use at run time, so it may need to be a bit mask which gets returned. I am not sure to understand this. Are you saying the hypervisor may use at the same time different page size? Cheers, -- Julien Grall