From patchwork Mon Oct 9 13:23:40 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Julien Grall X-Patchwork-Id: 9993233 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 18C35602D7 for ; Mon, 9 Oct 2017 13:26:16 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0B283287E9 for ; Mon, 9 Oct 2017 13:26:16 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 002AE287EA; Mon, 9 Oct 2017 13:26:15 +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 74DCB287DA for ; Mon, 9 Oct 2017 13:26:15 +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 1e1Y2L-00082l-QU; Mon, 09 Oct 2017 13:24:01 +0000 Received: from mail6.bemta3.messagelabs.com ([195.245.230.39]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1e1Y2K-00080x-G9 for xen-devel@lists.xen.org; Mon, 09 Oct 2017 13:24:00 +0000 Received: from [85.158.137.68] by server-9.bemta-3.messagelabs.com id 5E/49-02039-F687BD95; Mon, 09 Oct 2017 13:23:59 +0000 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrJLMWRWlGSWpSXmKPExsVysyfVTTe/4na kwcNvLBZLPi5mcWD0OLr7N1MAYxRrZl5SfkUCa8an++sZC3rYK37s38vYwNjK2sXIxSEksJlR Yta5dVDOaUaJxhPn2bsYOTnYBDQl7nz+xARiiwhIS1z7fJkRxGYWiJQ4/OEHWI2wQITEpVXzW EBsFgFVibOn9oDFeQUsJf7sBtnAySEhIC+xq+0imM0JFJ+2eToziC0kYCFx+cMO1gmM3AsYGV YxahSnFpWlFukameslFWWmZ5TkJmbm6BoaGOvlphYXJ6an5iQmFesl5+duYgR6uJ6BgXEHY8t ev0OMkhxMSqK8UwpuRwrxJeWnVGYkFmfEF5XmpBYfYpTh4FCS4K0sB8oJFqWmp1akZeYAQw0m LcHBoyTCW14KlOYtLkjMLc5Mh0idYjTmuPHw+h8mjo6bd/8wCbHk5eelSonz+oJMEgApzSjNg xsEi4FLjLJSwryMDAwMQjwFqUW5mSWo8q8YxTkYlYR5M0Cm8GTmlcDtewV0ChPQKYzFN0BOKU lESEk1ME548M54p8rp+dvvpT2XerijuveJpKc896257Ekh9YZyWml2pg+PObnPZlMJ1uLfxFK eb29x6djKWbpcqulZPIUS2RefV4sHhNt+Ef60vel9w7yi92sj7nFUbJgVpHaHPeDG/xDrY0fS 3PXDRbQderJyy14yfNxt6Zo3a9e9vspVpSEfCv/fVWIpzkg01GIuKk4EAI4rOdp8AgAA X-Env-Sender: julien.grall@arm.com X-Msg-Ref: server-16.tower-31.messagelabs.com!1507555438!101816037!1 X-Originating-IP: [217.140.101.70] X-SpamReason: No, hits=0.0 required=7.0 tests= X-StarScan-Received: X-StarScan-Version: 9.4.45; banners=-,-,- X-VirusChecked: Checked Received: (qmail 53155 invoked from network); 9 Oct 2017 13:23:58 -0000 Received: from foss.arm.com (HELO foss.arm.com) (217.140.101.70) by server-16.tower-31.messagelabs.com with SMTP; 9 Oct 2017 13:23:58 -0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 4C23F1435; Mon, 9 Oct 2017 06:23:58 -0700 (PDT) Received: from e108454-lin.cambridge.arm.com (e108454-lin.cambridge.arm.com [10.1.206.53]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 609583F578; Mon, 9 Oct 2017 06:23:57 -0700 (PDT) From: Julien Grall To: xen-devel@lists.xen.org Date: Mon, 9 Oct 2017 14:23:40 +0100 Message-Id: <20171009132341.1678-10-julien.grall@arm.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20171009132341.1678-1-julien.grall@arm.com> References: <20171009132341.1678-1-julien.grall@arm.com> Cc: andre.przywara@arm.com, Julien Grall , sstabellini@kernel.org Subject: [Xen-devel] [PATCH v4 09/10] xen/arm: mm: Handle permission flags when adding a new mapping 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: , MIME-Version: 1.0 Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" X-Virus-Scanned: ClamAV using ClamSMTP Currently, all the new mappings will be read-write non-executable. Allow the caller to use other permissions. Signed-off-by: Julien Grall Reviewed-by: Stefano Stabellini --- Changes in v2: - Switch the runtime check to a BUG_ON() --- xen/arch/arm/mm.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/xen/arch/arm/mm.c b/xen/arch/arm/mm.c index c1dad61a20..2329ccee83 100644 --- a/xen/arch/arm/mm.c +++ b/xen/arch/arm/mm.c @@ -1022,6 +1022,9 @@ static int create_xen_entries(enum xenmap_operation op, if ( op == RESERVE ) break; pte = mfn_to_xen_entry(mfn, PAGE_AI_MASK(flags)); + pte.pt.ro = PAGE_RO_MASK(flags); + pte.pt.xn = PAGE_XN_MASK(flags); + BUG_ON(!pte.pt.ro && !pte.pt.xn); pte.pt.table = 1; write_pte(entry, pte); break;