From patchwork Thu Mar 23 18:08:19 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Wei Liu X-Patchwork-Id: 9641753 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 21AD9602CA for ; Thu, 23 Mar 2017 18:10:30 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1899F2841D for ; Thu, 23 Mar 2017 18:10:30 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 0DA6528438; Thu, 23 Mar 2017 18:10:30 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 272182841D for ; Thu, 23 Mar 2017 18:10:29 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1cr79u-0005wv-70; Thu, 23 Mar 2017 18:08:26 +0000 Received: from mail6.bemta6.messagelabs.com ([193.109.254.103]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1cr79t-0005wZ-8w for xen-devel@lists.xenproject.org; Thu, 23 Mar 2017 18:08:25 +0000 Received: from [85.158.143.35] by server-2.bemta-6.messagelabs.com id 74/F7-19731-81F04D85; Thu, 23 Mar 2017 18:08:24 +0000 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFupjkeJIrShJLcpLzFFi42JxWrrBXlec/0q Ewdk5Nhbft0xmcmD0OPzhCksAYxRrZl5SfkUCa8adtZwF29kqFmwWamCcwtrFyMkhIeAvsa33 OzuIzSagLPGzs5cNxBYR0JNoOvCcsYuRi4NZYA2jRNO3JqAiDg5hAQuJ+3PtQGpYBFQlzu2fw QJi8wKFz19ZzA4xU15iV9tFVoi4oMTJmU/AapgFNCVat/9mh7DlJZq3zmYGsYUEFCQ6ph9jms DIMwtJyywkLbOQtCxgZF7FqF6cWlSWWqRrppdUlJmeUZKbmJmja2hgppebWlycmJ6ak5hUrJe cn7uJERg2DECwg3HeCf9DjJIcTEqivI47L0cI8SXlp1RmJBZnxBeV5qQWH2KU4eBQkuBV47sS ISRYlJqeWpGWmQMMYJi0BAePkggvGy9Qmre4IDG3ODMdInWKUZfjxvEDb5iEWPLy81KlxHndQ WYIgBRllObBjYBF0yVGWSlhXkago4R4ClKLcjNLUOVfMYpzMCoJ854BWcWTmVcCt+kV0BFMQE eU7bkAckRJIkJKqoHx2Erf3bcWfNoveNhc/d6lvmSPT9pPlA9f7ViQHK0ivPzMrMOtgg8nbcw P+ngmhCOW703Wx2K3mr83tqw8Xdv/7b3fIut9buJcn566XtpbZNHAUSq5nIfh7GabHJUu9xy3 qhPlhhMOppS8kpcP+f2vdlaNQFhgSd3WstISQabstknmT1o5244psRRnJBpqMRcVJwIAKtx7y qECAAA= X-Env-Sender: prvs=2486d1333=wei.liu2@citrix.com X-Msg-Ref: server-4.tower-21.messagelabs.com!1490292502!57734140!1 X-Originating-IP: [66.165.176.63] X-SpamReason: No, hits=0.0 required=7.0 tests=sa_preprocessor: VHJ1c3RlZCBJUDogNjYuMTY1LjE3Ni42MyA9PiAzMDYwNDg=\n, received_headers: No Received headers X-StarScan-Received: X-StarScan-Version: 9.2.3; banners=-,-,- X-VirusChecked: Checked Received: (qmail 54178 invoked from network); 23 Mar 2017 18:08:23 -0000 Received: from smtp02.citrix.com (HELO SMTP02.CITRIX.COM) (66.165.176.63) by server-4.tower-21.messagelabs.com with RC4-SHA encrypted SMTP; 23 Mar 2017 18:08:23 -0000 X-IronPort-AV: E=Sophos;i="5.36,210,1486425600"; d="scan'208";a="424430484" From: Wei Liu To: Xen-devel Date: Thu, 23 Mar 2017 18:08:19 +0000 Message-ID: <20170323180819.26255-1-wei.liu2@citrix.com> X-Mailer: git-send-email 2.11.0 MIME-Version: 1.0 Cc: Andrew Cooper , Wei Liu , Jan Beulich , =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= Subject: [Xen-devel] [PATCH] x86/mm: relax the check in get_pg_owner X-BeenThere: xen-devel@lists.xen.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" X-Virus-Scanned: ClamAV using ClamSMTP PVH guest is actually an translated guest. It should be able to manipulate page table for other domains when acting as Dom0. Signed-off-by: Wei Liu --- Cc: Jan Beulich Cc: Andrew Cooper Cc: Roger Pau Monné --- xen/arch/x86/mm.c | 6 ------ 1 file changed, 6 deletions(-) diff --git a/xen/arch/x86/mm.c b/xen/arch/x86/mm.c index a6b2649cda..3635764df8 100644 --- a/xen/arch/x86/mm.c +++ b/xen/arch/x86/mm.c @@ -3041,12 +3041,6 @@ static struct domain *get_pg_owner(domid_t domid) goto out; } - if ( unlikely(paging_mode_translate(curr)) ) - { - MEM_LOG("Cannot mix foreign mappings with translated domains"); - goto out; - } - switch ( domid ) { case DOMID_IO: