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=-2.5 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,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 1ABB5ECDE20 for ; Wed, 11 Sep 2019 09:13:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E9E4321928 for ; Wed, 11 Sep 2019 09:13:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727364AbfIKJNn (ORCPT ); Wed, 11 Sep 2019 05:13:43 -0400 Received: from mx2.suse.de ([195.135.220.15]:60866 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726702AbfIKJNm (ORCPT ); Wed, 11 Sep 2019 05:13:42 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id 1FCDFB033; Wed, 11 Sep 2019 09:13:41 +0000 (UTC) Subject: Re: [Xen-devel] [PATCH] xen/pci: try to reserve MCFG areas earlier To: Igor Druzhinin Cc: xen-devel@lists.xenproject.org, Boris Ostrovsky , linux-kernel@vger.kernel.org, Juergen Gross References: <1567556431-9809-1-git-send-email-igor.druzhinin@citrix.com> <5054ad91-5b87-652c-873a-b31758948bd7@oracle.com> <43b7da04-5c42-80d8-898b-470ee1c91ed2@oracle.com> <1695c88d-e5ad-1854-cdef-3cd95c812574@oracle.com> <4d3bf854-51de-99e4-9a40-a64c581bdd10@citrix.com> <43e492ff-f967-7218-65c4-d16581fabea3@oracle.com> <416ff4b7-3186-f61a-75fa-bcfc968f8117@citrix.com> <9ac1f34b-ea2a-3818-4cbd-a22a9a475dd4@oracle.com> <74c9d2cc-a528-2cec-099e-0d803aeace6f@citrix.com> From: Jan Beulich Message-ID: <65b8d74a-2f7b-a257-a750-9dada5206f01@suse.com> Date: Wed, 11 Sep 2019 11:13:41 +0200 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.9.0 MIME-Version: 1.0 In-Reply-To: <74c9d2cc-a528-2cec-099e-0d803aeace6f@citrix.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 11.09.2019 03:15, Igor Druzhinin wrote: > Another thing that I implied by "not supporting" but want to explicitly > call out is that currently Xen will refuse reserving any MCFG area > unless it actually existed in MCFG table at boot. I don't clearly > understand reasoning behind it but it might be worth relaxing at least > size matching restriction on Xen side now with this change. I guess it's because no-one had a system were it would be needed, and hence could be tested. Jan