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 4D911C433DF for ; Thu, 15 Oct 2020 13:11:13 +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 C3C0E2225C for ; Thu, 15 Oct 2020 13:11:12 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=citrix.com header.i=@citrix.com header.b="c2vt4C6r" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C3C0E2225C Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=citrix.com 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.7360.19203 (Exim 4.92) (envelope-from ) id 1kT31x-0005Zx-94; Thu, 15 Oct 2020 13:10:53 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 7360.19203; Thu, 15 Oct 2020 13:10:53 +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" Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1kT31x-0005Zq-63; Thu, 15 Oct 2020 13:10:53 +0000 Received: by outflank-mailman (input) for mailman id 7360; Thu, 15 Oct 2020 13:10:51 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1kT31v-0005Zl-FB for xen-devel@lists.xenproject.org; Thu, 15 Oct 2020 13:10:51 +0000 Received: from esa2.hc3370-68.iphmx.com (unknown [216.71.145.153]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 5abb5e33-7b0f-437a-a9aa-8e1ca1174325; Thu, 15 Oct 2020 13:10:50 +0000 (UTC) Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1kT31v-0005Zl-FB for xen-devel@lists.xenproject.org; Thu, 15 Oct 2020 13:10:51 +0000 X-Inumbo-ID: 5abb5e33-7b0f-437a-a9aa-8e1ca1174325 Received: from esa2.hc3370-68.iphmx.com (unknown [216.71.145.153]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 5abb5e33-7b0f-437a-a9aa-8e1ca1174325; Thu, 15 Oct 2020 13:10:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=citrix.com; s=securemail; t=1602767450; h=subject:to:cc:references:from:message-id:date: mime-version:in-reply-to:content-transfer-encoding; bh=f6Kamy1C8O875JTu/vLF90Ddc8FWBrVKHooa1uTjaeQ=; b=c2vt4C6rqNUF9VdfyCuMKsk1juKOixPSz7EXwnsSpnrpuSppcgHO2Guf IyHizkMxUZHf+wKiv0b202dp3KcKGCBdfepdGOhfYhP1SK8pDO2CLd+cP gq580Wo6KOPHskrPXZc2XVdCcJZZXPz8HnDFD2SomiekpYUwz19qqTRLw Q=; Authentication-Results: esa2.hc3370-68.iphmx.com; dkim=none (message not signed) header.i=none IronPort-SDR: TsNzbLxMsk384nJy5Ma5vOQoKEjgU+ipNL1nJSmtDZ6qs87H2v+vbvQIN4MbbD72V2Ey2BJWzK DJ2By9UKxVmig34H8L3MwHOYlSQxz2DBF8RnLL026OOdZRjfNPY566lXkCEMWpefwuzoeGsvFt SnTPGz44+AtTSC4bBi08uZqWHQKJcn+DFJ+74bUEgEdXNlB7yWOUEr2CPons5/qNhxHYKojNNA H5bJ7MetpyQXJ0vK5ZCl6jO/6csbfhHTojPmAvbq5tYkHveVjp4yyTrmmaBCv2pnjkGKD8M7ZL 4Bg= X-SBRS: 2.5 X-MesageID: 29078535 X-Ironport-Server: esa2.hc3370-68.iphmx.com X-Remote-IP: 162.221.158.21 X-Policy: $RELAYED X-IronPort-AV: E=Sophos;i="5.77,379,1596513600"; d="scan'208";a="29078535" Subject: Re: [PATCH 2/2] xen: Kconfig: nest Xen guest options To: , Jason Andryuk , "Juergen Gross" , Stefano Stabellini CC: Thomas Gleixner , Ingo Molnar , Borislav Petkov , , "H. Peter Anvin" , , References: <20201014175342.152712-1-jandryuk@gmail.com> <20201014175342.152712-3-jandryuk@gmail.com> <6cd9363c-ac0c-ea68-c8e7-9fd3cd30a89b@oracle.com> From: Andrew Cooper Message-ID: <4e31301b-0e57-ac89-cd71-6ad5e1a66628@citrix.com> Date: Thu, 15 Oct 2020 14:10:40 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <6cd9363c-ac0c-ea68-c8e7-9fd3cd30a89b@oracle.com> Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Content-Language: en-GB X-ClientProxiedBy: AMSPEX02CAS02.citrite.net (10.69.22.113) To FTLPEX02CL05.citrite.net (10.13.108.178) 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. ~Andrew