From patchwork Wed May 25 15:56:41 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Julien Grall X-Patchwork-Id: 9135699 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 157C8607D5 for ; Wed, 25 May 2016 15:58:47 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0704D281FE for ; Wed, 25 May 2016 15:58:47 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id EEE522824F; Wed, 25 May 2016 15:58:46 +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 A2D93281FE for ; Wed, 25 May 2016 15:58:46 +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 1b5bB2-0008V5-BE; Wed, 25 May 2016 15:56:56 +0000 Received: from mail6.bemta14.messagelabs.com ([193.109.254.103]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1b5bB0-0008UP-FX for xen-devel@lists.xen.org; Wed, 25 May 2016 15:56:54 +0000 Received: from [193.109.254.147] by server-11.bemta-14.messagelabs.com id E7/C4-14954-54BC5475; Wed, 25 May 2016 15:56:53 +0000 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrGLMWRWlGSWpSXmKPExsVysyfVTdf1tGu 4weU1AhZLPi5mcWD0OLr7N1MAYxRrZl5SfkUCa8bplc9ZCvq4KhZs2MrcwLiUvYuRi0NIYBOj xN7OK0wQzmlGiafvljB2MXJysAloStz5/IkJxBYRkJa49vkyI0gRs8ArRomW6UtYQBLCAgESe /o7WEFsFgFVieddHWANvALOEm07W8FqJATkJE4emwxUw8HBKeAi0dkAViIEVDLn722WCYzcCx gZVjGqF6cWlaUW6VroJRVlpmeU5CZm5ugaGpro5aYWFyemp+YkJhXrJefnbmIE+pcBCHYwbpz kfIhRkoNJSZT3yRrXcCG+pPyUyozE4oz4otKc1OJDjDIcHEoSvEqngHKCRanpqRVpmTnAQINJ S3DwKInwGoCkeYsLEnOLM9MhUqcYFaXEeTVBEgIgiYzSPLg2WHBfYpSVEuZlBDpEiKcgtSg3s wRV/hWjOAejkjBvM8gUnsy8ErjpwPADulmE1/+LM8jikkSElFQD4/xnHEuu8Oa9mpXjKN59c5 J7Cf/VIK59VnNyzzT5dWYp6SRey35Ts3v72kC5xZ3cdx7sT6+t059QckH5257PE12kWYx38d9 frckiX9774C7T4qzdt08Zzjm+ecfWqNOtZzJvP5DN275/lWSq2R3LXvHTbJPWKJV1y35psnut bb9H/vymxOBjm5RYijMSDbWYi4oTAWT0MmZpAgAA X-Env-Sender: julien.grall@arm.com X-Msg-Ref: server-13.tower-27.messagelabs.com!1464191812!43874491!1 X-Originating-IP: [217.140.101.70] X-SpamReason: No, hits=0.0 required=7.0 tests= X-StarScan-Received: X-StarScan-Version: 8.34; banners=-,-,- X-VirusChecked: Checked Received: (qmail 43351 invoked from network); 25 May 2016 15:56:53 -0000 Received: from foss.arm.com (HELO foss.arm.com) (217.140.101.70) by server-13.tower-27.messagelabs.com with SMTP; 25 May 2016 15:56:53 -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 3F2B530B; Wed, 25 May 2016 08:57:16 -0700 (PDT) Received: from e108454-lin.cambridge.arm.com (e108454-lin.cambridge.arm.com [10.1.215.28]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id CECE53F218; Wed, 25 May 2016 08:56:50 -0700 (PDT) From: Julien Grall To: xen-devel@lists.xen.org Date: Wed, 25 May 2016 16:56:41 +0100 Message-Id: <1464191801-1294-3-git-send-email-julien.grall@arm.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1464191801-1294-1-git-send-email-julien.grall@arm.com> References: <1464191801-1294-1-git-send-email-julien.grall@arm.com> Cc: sstabellini@kernel.org, wei.liu2@citrix.com, andrew.cooper3@citrix.com, Ian.Jackson@eu.citrix.com, george.dunlap@citrix.com, tim@xen.org, Julien Grall , shannon.zhao@linaro.org Subject: [Xen-devel] [for-4.7 v2 2/2] xen/arm: Document the behavior of XENMAPSPACE_dev_mmio 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, XENMAPSPACE_dev_mmio maps MMIO regions using one of the most restrictive memory attribute (Device-nGnRE). Signed-off-by: Julien Grall Acked-by: Jan Beulich --- Changes in v2: - s/Device_nGnRE/Device-nGnRE/ to match the spec - Update the comment to mention the name for ARMv7. --- xen/include/public/memory.h | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/xen/include/public/memory.h b/xen/include/public/memory.h index a5ab139..cfb427f 100644 --- a/xen/include/public/memory.h +++ b/xen/include/public/memory.h @@ -220,7 +220,11 @@ DEFINE_XEN_GUEST_HANDLE(xen_machphys_mapping_t); #define XENMAPSPACE_gmfn_range 3 /* GMFN range, XENMEM_add_to_physmap only. */ #define XENMAPSPACE_gmfn_foreign 4 /* GMFN from another dom, * XENMEM_add_to_physmap_batch only. */ -#define XENMAPSPACE_dev_mmio 5 /* device mmio region */ +#define XENMAPSPACE_dev_mmio 5 /* device mmio region + ARM only; the region will be mapped + in Stage-2 using the memory attribute + "Device-nGnRE" (previously named + "Device" on ARMv7) */ /* ` } */ /*