Received: by 2002:a25:ad19:0:0:0:0:0 with SMTP id y25csp4427571ybi; Mon, 15 Jul 2019 08:46:17 -0700 (PDT) X-Google-Smtp-Source: APXvYqyz0SNLFdKHUIyGhsgjhMLbA5ITRrgN2fzSyPyPEzLXC6H5EZ92gdHQdKfOAbqgEr8AjvTM X-Received: by 2002:a17:902:4222:: with SMTP id g31mr30177487pld.41.1563205577423; Mon, 15 Jul 2019 08:46:17 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1563205577; cv=none; d=google.com; s=arc-20160816; b=EvycwMusQKW1g7Ohwu65/NTzd1YOesMeqnFPuJ5Lk0M7swaMGJ6UnlwEQYaCvasef8 Asp+6Yvooi0Xy8IrwW7+V/ceNzFiBT1Uzg6KC6uqLC5OaBpdSs7NT9k1LNKovRhUljzo hun7rwj+LWdcyvzJVBaKGDndN5bVsvpGgxnfq74Zo9ATyslbH0qHwWh4vrLR/CnmDByB F1r6Wa4CrKBD4WuzhtZrAfSiGyScQhe4VpkkrktKtAkS5Mogv+WwadOWVWSxDwEmnvGg ROW2L8Dx3SbU7GpuDcQXuR4TnEAiV/kw5v5KP30snc8sVj2sGbdWddQdLHzMmJbz5vyq Jobw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-language :content-transfer-encoding:in-reply-to:mime-version:user-agent:date :message-id:autocrypt:openpgp:from:references:cc:to:subject :dkim-signature; bh=l/u+2fguqZgRhJpV4dlrbyYA/Dtl3SrTOUeeBoUA+oE=; b=ad2SOtsiO8lGIGF3dJUpxJ1p+fp7od/Svt//WmY/TrcsCC1LVJ5Daxo4lQM5PLFK0D KHbHxRtMuPqTbD03f1Dn4d6YbyD4roAoGwmRKL5K2orHLsOmGeuikFx/2Z0vGQHBicWR JJABL/lxiyBuryn5dDkZc839XceUFpSisSgMm9B7CYT2Rjbrr2sAluC64Y6PbAE8yiJd Wz47+F8FZ+CK/XmzDABPgN0o6/ILLSbJM/mEWuZUgHsbJQZpuQ8lsigbHUiCNWVmgwT6 V/McYeNVYRXhVDuV8jww8L93KDFPtBoU8dq6LfLKmuxiwSVqvNDpoNTy39l/RkYegmac Hplg== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@oracle.com header.s=corp-2018-07-02 header.b=fW0H3IJi; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=oracle.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id i26si3316176pgm.250.2019.07.15.08.46.00; Mon, 15 Jul 2019 08:46:17 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@oracle.com header.s=corp-2018-07-02 header.b=fW0H3IJi; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=oracle.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731022AbfGOPow (ORCPT + 99 others); Mon, 15 Jul 2019 11:44:52 -0400 Received: from userp2130.oracle.com ([156.151.31.86]:46634 "EHLO userp2130.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730257AbfGOPov (ORCPT ); Mon, 15 Jul 2019 11:44:51 -0400 Received: from pps.filterd (userp2130.oracle.com [127.0.0.1]) by userp2130.oracle.com (8.16.0.27/8.16.0.27) with SMTP id x6FFhqTs021946; Mon, 15 Jul 2019 15:43:52 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-2018-07-02; bh=l/u+2fguqZgRhJpV4dlrbyYA/Dtl3SrTOUeeBoUA+oE=; b=fW0H3IJiwQoBM9x7mkpoTVBjzeWsJ+7OYm7KKUI1j93xQFeQf428au+Q+tgWS1pA2Apj lpi3GRrmzixEmdwrfLPupjMZ4JeZRditrdiMpyUuVVIuQkRfGcXz+mN8VNpDY5I6J/Fc 12tRm0yyC/iIpogVxAH6RjUfMCpUvWyk58/wL7jLe/Z9MsZ7Rp5aarm49H/FBpcbDqNh xz8wzv3YSLABCMDItqzi0nbvnMiYZl2/rVs1hUX4UVE1JYCC8McSP3XucHCvfmWegVvy QoP1oDdfyFhetcfNznmxwpZyO+wcYosuvYfkGqZt71bTqXJdlsSDuDRh8xcv+Lp5EeIr RQ== Received: from aserp3030.oracle.com (aserp3030.oracle.com [141.146.126.71]) by userp2130.oracle.com with ESMTP id 2tq6qtfcp6-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 15 Jul 2019 15:43:52 +0000 Received: from pps.filterd (aserp3030.oracle.com [127.0.0.1]) by aserp3030.oracle.com (8.16.0.27/8.16.0.27) with SMTP id x6FFge8S173725; Mon, 15 Jul 2019 15:43:48 GMT Received: from userv0122.oracle.com (userv0122.oracle.com [156.151.31.75]) by aserp3030.oracle.com with ESMTP id 2tq5bbvewc-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 15 Jul 2019 15:43:48 +0000 Received: from abhmp0020.oracle.com (abhmp0020.oracle.com [141.146.116.26]) by userv0122.oracle.com (8.14.4/8.14.4) with ESMTP id x6FFhjg9011527; Mon, 15 Jul 2019 15:43:45 GMT Received: from bostrovs-us.us.oracle.com (/10.152.32.65) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Mon, 15 Jul 2019 08:43:45 -0700 Subject: Re: [PATCH 1/2] x86/xen: remove 32-bit Xen PV guest support To: Juergen Gross , xen-devel@lists.xenproject.org, x86@kernel.org, linux-kernel@vger.kernel.org Cc: Andy Lutomirski , Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H. Peter Anvin" , Stefano Stabellini References: <20190715113739.17694-1-jgross@suse.com> <20190715113739.17694-2-jgross@suse.com> From: Boris Ostrovsky Openpgp: preference=signencrypt Autocrypt: addr=boris.ostrovsky@oracle.com; prefer-encrypt=mutual; keydata= mQINBFH8CgsBEAC0KiOi9siOvlXatK2xX99e/J3OvApoYWjieVQ9232Eb7GzCWrItCzP8FUV PQg8rMsSd0OzIvvjbEAvaWLlbs8wa3MtVLysHY/DfqRK9Zvr/RgrsYC6ukOB7igy2PGqZd+M MDnSmVzik0sPvB6xPV7QyFsykEgpnHbvdZAUy/vyys8xgT0PVYR5hyvhyf6VIfGuvqIsvJw5 C8+P71CHI+U/IhsKrLrsiYHpAhQkw+Zvyeml6XSi5w4LXDbF+3oholKYCkPwxmGdK8MUIdkM d7iYdKqiP4W6FKQou/lC3jvOceGupEoDV9botSWEIIlKdtm6C4GfL45RD8V4B9iy24JHPlom woVWc0xBZboQguhauQqrBFooHO3roEeM1pxXjLUbDtH4t3SAI3gt4dpSyT3EvzhyNQVVIxj2 FXnIChrYxR6S0ijSqUKO0cAduenhBrpYbz9qFcB/GyxD+ZWY7OgQKHUZMWapx5bHGQ8bUZz2 SfjZwK+GETGhfkvNMf6zXbZkDq4kKB/ywaKvVPodS1Poa44+B9sxbUp1jMfFtlOJ3AYB0WDS Op3d7F2ry20CIf1Ifh0nIxkQPkTX7aX5rI92oZeu5u038dHUu/dO2EcuCjl1eDMGm5PLHDSP 0QUw5xzk1Y8MG1JQ56PtqReO33inBXG63yTIikJmUXFTw6lLJwARAQABtDNCb3JpcyBPc3Ry b3Zza3kgKFdvcmspIDxib3Jpcy5vc3Ryb3Zza3lAb3JhY2xlLmNvbT6JAjgEEwECACIFAlH8 CgsCGwMGCwkIBwMCBhUIAgkKCwQWAgMBAh4BAheAAAoJEIredpCGysGyasEP/j5xApopUf4g 9Fl3UxZuBx+oduuw3JHqgbGZ2siA3EA4bKwtKq8eT7ekpApn4c0HA8TWTDtgZtLSV5IdH+9z JimBDrhLkDI3Zsx2CafL4pMJvpUavhc5mEU8myp4dWCuIylHiWG65agvUeFZYK4P33fGqoaS VGx3tsQIAr7MsQxilMfRiTEoYH0WWthhE0YVQzV6kx4wj4yLGYPPBtFqnrapKKC8yFTpgjaK jImqWhU9CSUAXdNEs/oKVR1XlkDpMCFDl88vKAuJwugnixjbPFTVPyoC7+4Bm/FnL3iwlJVE qIGQRspt09r+datFzPqSbp5Fo/9m4JSvgtPp2X2+gIGgLPWp2ft1NXHHVWP19sPgEsEJXSr9 tskM8ScxEkqAUuDs6+x/ISX8wa5Pvmo65drN+JWA8EqKOHQG6LUsUdJolFM2i4Z0k40BnFU/ kjTARjrXW94LwokVy4x+ZYgImrnKWeKac6fMfMwH2aKpCQLlVxdO4qvJkv92SzZz4538az1T m+3ekJAimou89cXwXHCFb5WqJcyjDfdQF857vTn1z4qu7udYCuuV/4xDEhslUq1+GcNDjAhB nNYPzD+SvhWEsrjuXv+fDONdJtmLUpKs4Jtak3smGGhZsqpcNv8nQzUGDQZjuCSmDqW8vn2o hWwveNeRTkxh+2x1Qb3GT46uuQINBFH8CgsBEADGC/yx5ctcLQlB9hbq7KNqCDyZNoYu1HAB Hal3MuxPfoGKObEktawQPQaSTB5vNlDxKihezLnlT/PKjcXC2R1OjSDinlu5XNGc6mnky03q yymUPyiMtWhBBftezTRxWRslPaFWlg/h/Y1iDuOcklhpr7K1h1jRPCrf1yIoxbIpDbffnuyz kuto4AahRvBU4Js4sU7f/btU+h+e0AcLVzIhTVPIz7PM+Gk2LNzZ3/on4dnEc/qd+ZZFlOQ4 KDN/hPqlwA/YJsKzAPX51L6Vv344pqTm6Z0f9M7YALB/11FO2nBB7zw7HAUYqJeHutCwxm7i BDNt0g9fhviNcJzagqJ1R7aPjtjBoYvKkbwNu5sWDpQ4idnsnck4YT6ctzN4I+6lfkU8zMzC gM2R4qqUXmxFIS4Bee+gnJi0Pc3KcBYBZsDK44FtM//5Cp9DrxRQOh19kNHBlxkmEb8kL/pw XIDcEq8MXzPBbxwHKJ3QRWRe5jPNpf8HCjnZz0XyJV0/4M1JvOua7IZftOttQ6KnM4m6WNIZ 2ydg7dBhDa6iv1oKdL7wdp/rCulVWn8R7+3cRK95SnWiJ0qKDlMbIN8oGMhHdin8cSRYdmHK kTnvSGJNlkis5a+048o0C6jI3LozQYD/W9wq7MvgChgVQw1iEOB4u/3FXDEGulRVko6xCBU4 SQARAQABiQIfBBgBAgAJBQJR/AoLAhsMAAoJEIredpCGysGyfvMQAIywR6jTqix6/fL0Ip8G jpt3uk//QNxGJE3ZkUNLX6N786vnEJvc1beCu6EwqD1ezG9fJKMl7F3SEgpYaiKEcHfoKGdh 30B3Hsq44vOoxR6zxw2B/giADjhmWTP5tWQ9548N4VhIZMYQMQCkdqaueSL+8asp8tBNP+TJ PAIIANYvJaD8xA7sYUXGTzOXDh2THWSvmEWWmzok8er/u6ZKdS1YmZkUy8cfzrll/9hiGCTj u3qcaOM6i/m4hqtvsI1cOORMVwjJF4+IkC5ZBoeRs/xW5zIBdSUoC8L+OCyj5JETWTt40+lu qoqAF/AEGsNZTrwHJYu9rbHH260C0KYCNqmxDdcROUqIzJdzDKOrDmebkEVnxVeLJBIhYZUd t3Iq9hdjpU50TA6sQ3mZxzBdfRgg+vaj2DsJqI5Xla9QGKD+xNT6v14cZuIMZzO7w0DoojM4 ByrabFsOQxGvE0w9Dch2BDSI2Xyk1zjPKxG1VNBQVx3flH37QDWpL2zlJikW29Ws86PHdthh Fm5PY8YtX576DchSP6qJC57/eAAe/9ztZdVAdesQwGb9hZHJc75B+VNm4xrh/PJO6c1THqdQ 19WVJ+7rDx3PhVncGlbAOiiiE3NOFPJ1OQYxPKtpBUukAlOTnkKE6QcA4zckFepUkfmBV1wM Jg6OxFYd01z+a+oL Message-ID: <91ed11a0-c97e-8caf-c71c-4595be4dbbb4@oracle.com> Date: Mon, 15 Jul 2019 11:44:42 -0400 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.7.0 MIME-Version: 1.0 In-Reply-To: <20190715113739.17694-2-jgross@suse.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=9319 signatures=668688 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=0 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1907150185 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9319 signatures=668688 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1011 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1907150185 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > diff --git a/arch/x86/xen/Makefile b/arch/x86/xen/Makefile > index 084de77a109e..d42737f31304 100644 > --- a/arch/x86/xen/Makefile > +++ b/arch/x86/xen/Makefile > @@ -1,5 +1,5 @@ > # SPDX-License-Identifier: GPL-2.0 > -OBJECT_FILES_NON_STANDARD_xen-asm_$(BITS).o := y > +OBJECT_FILES_NON_STANDARD_xen-asm_64.o := y > > ifdef CONFIG_FUNCTION_TRACER > # Do not profile debug and lowlevel utilities > @@ -34,7 +34,7 @@ obj-$(CONFIG_XEN_PV) += mmu_pv.o > obj-$(CONFIG_XEN_PV) += irq.o > obj-$(CONFIG_XEN_PV) += multicalls.o > obj-$(CONFIG_XEN_PV) += xen-asm.o > -obj-$(CONFIG_XEN_PV) += xen-asm_$(BITS).o > +obj-$(CONFIG_XEN_PV) += xen-asm_64.o We should be able to merge xen-asm_64.S into xen-asm.S, shouldn't we? > @@ -1312,15 +1290,7 @@ asmlinkage __visible void __init xen_start_kernel(void) > > /* keep using Xen gdt for now; no urgent need to change it */ > > -#ifdef CONFIG_X86_32 > - pv_info.kernel_rpl = 1; > - if (xen_feature(XENFEAT_supervisor_mode_kernel)) > - pv_info.kernel_rpl = 0; > -#else > pv_info.kernel_rpl = 0; Is kernel_rpl needed anymore? -boris