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=-6.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, 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 CA436C433E7 for ; Thu, 15 Oct 2020 13:17:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 732472225C for ; Thu, 15 Oct 2020 13:17:54 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b="VsOcvhb/" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729357AbgJONRx (ORCPT ); Thu, 15 Oct 2020 09:17:53 -0400 Received: from aserp2130.oracle.com ([141.146.126.79]:50468 "EHLO aserp2130.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729250AbgJONRx (ORCPT ); Thu, 15 Oct 2020 09:17:53 -0400 Received: from pps.filterd (aserp2130.oracle.com [127.0.0.1]) by aserp2130.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 09FDEf3v097962; Thu, 15 Oct 2020 13:17:18 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=subject : to : cc : references : from : message-id : date : mime-version : in-reply-to : content-type : content-transfer-encoding; s=corp-2020-01-29; bh=dOOcmqv3ORCOAQisi0SZNKKf+PzDDb3epMdS0uvDdiQ=; b=VsOcvhb/uE1AkiuqhIwYpyoaN2Y0JlpwCeSOVkau9AH/4eZFn/KDGFORo2EHy2Ivp+0n upg8dsUz8m1RWjevnlwLIFlufFPG82PUcLhzD90Kl3KKa22VgxVcHF/wVJ/WJhTOvSwV SDt7rKpbcRth3EkaqnpwJweZcYo3ya1njakx1T8bz5ICbfAlJeFtR4UOJrq9WhKjJh9f TN9wOifglj3rLEdZdK1rUeKtTFzErdMlr+8sQDGhvcW189z/Lh+fscQ0NYnwW4Pq/rCx dkJfm75foKZUPaY1Wx10v/zryN9SqgraHQqv0Bd9vwDhZPga09HMwhxVtPivsGIzdx73 JQ== Received: from userp3030.oracle.com (userp3030.oracle.com [156.151.31.80]) by aserp2130.oracle.com with ESMTP id 346g8ghsak-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Thu, 15 Oct 2020 13:17:18 +0000 Received: from pps.filterd (userp3030.oracle.com [127.0.0.1]) by userp3030.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 09FDEdKd025936; Thu, 15 Oct 2020 13:17:17 GMT Received: from userv0122.oracle.com (userv0122.oracle.com [156.151.31.75]) by userp3030.oracle.com with ESMTP id 343pw0brsa-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 15 Oct 2020 13:17:17 +0000 Received: from abhmp0018.oracle.com (abhmp0018.oracle.com [141.146.116.24]) by userv0122.oracle.com (8.14.4/8.14.4) with ESMTP id 09FDHEhc024698; Thu, 15 Oct 2020 13:17:15 GMT Received: from [10.39.226.219] (/10.39.226.219) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Thu, 15 Oct 2020 06:17:14 -0700 Subject: Re: [PATCH 2/2] xen: Kconfig: nest Xen guest options To: Andrew Cooper , Jason Andryuk , Juergen Gross , Stefano Stabellini Cc: Thomas Gleixner , Ingo Molnar , Borislav Petkov , x86@kernel.org, "H. Peter Anvin" , xen-devel@lists.xenproject.org, linux-kernel@vger.kernel.org References: <20201014175342.152712-1-jandryuk@gmail.com> <20201014175342.152712-3-jandryuk@gmail.com> <6cd9363c-ac0c-ea68-c8e7-9fd3cd30a89b@oracle.com> <4e31301b-0e57-ac89-cd71-6ad5e1a66628@citrix.com> From: boris.ostrovsky@oracle.com Organization: Oracle Corporation Message-ID: Date: Thu, 15 Oct 2020 09:17:12 -0400 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:78.0) Gecko/20100101 Thunderbird/78.3.2 MIME-Version: 1.0 In-Reply-To: <4e31301b-0e57-ac89-cd71-6ad5e1a66628@citrix.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Content-Language: en-US X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9774 signatures=668682 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 mlxscore=0 adultscore=0 bulkscore=0 mlxlogscore=999 suspectscore=0 malwarescore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2010150094 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9774 signatures=668682 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 impostorscore=0 suspectscore=0 priorityscore=1501 phishscore=0 clxscore=1015 spamscore=0 adultscore=0 mlxscore=0 malwarescore=0 bulkscore=0 mlxlogscore=999 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2010150094 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 10/15/20 9:10 AM, Andrew Cooper wrote: > On 15/10/2020 13:37, boris.ostrovsky@oracle.com wrote: >> On 10/14/20 1:53 PM, Jason Andryuk wrote: >>> +config XEN_512GB >>> + bool "Limit Xen pv-domain memory to 512GB" >>> + depends on XEN_PV && X86_64 >> Why is X86_64 needed here? >> 512G support was implemented using a direct-mapped P2M, and is rather > beyond the virtual address capabilities of 32bit. > Yes, my point was that XEN_PV already depends on X86_64. -boris