From patchwork Fri Aug 11 13:37:10 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrew Cooper X-Patchwork-Id: 9895943 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 C5CE9602DA for ; Fri, 11 Aug 2017 13:40:13 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B6C8B28C33 for ; Fri, 11 Aug 2017 13:40:13 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id ABA1B28C45; Fri, 11 Aug 2017 13:40:13 +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 41EA628C3C for ; Fri, 11 Aug 2017 13:40:12 +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 1dgA8J-0002DX-CY; Fri, 11 Aug 2017 13:37:47 +0000 Received: from mail6.bemta6.messagelabs.com ([193.109.254.103]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dgA8I-0002DR-63 for xen-devel@lists.xen.org; Fri, 11 Aug 2017 13:37:46 +0000 Received: from [85.158.143.35] by server-5.bemta-6.messagelabs.com id 2C/2D-03368-923BD895; Fri, 11 Aug 2017 13:37:45 +0000 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFvrOLMWRWlGSWpSXmKPExsXitHRDpK7m5t5 Ig3OPmC2WfFzM4sDocXT3b6YAxijWzLyk/IoE1oxnl64zFtzmrFjwczNLA2MDRxcjJ4eEgL/E 0puvWUFsNgF9id0vPjGB2CIC6hKnOy4CxTk4mAX8JA498AUJCwOZz2a9YwMJswioSix5wAwS5 hXwlPi5oYkJYqKcxPnjP8HiQgJqEtf6L7FD1AhKnJz5hAXEZhaQkDj44gXzBEbuWUhSs5CkFj AyrWLUKE4tKkst0jU00UsqykzPKMlNzMzRNTQw08tNLS5OTE/NSUwq1kvOz93ECAwEBiDYwXh 9Y8AhRkkOJiVR3gSf3kghvqT8lMqMxOKM+KLSnNTiQ4wyHBxKErxvNwLlBItS01Mr0jJzgCEJ k5bg4FES4T0DkuYtLkjMLc5Mh0idYtTleDXh/zcmIZa8/LxUKXHeLSBFAiBFGaV5cCNg8XGJU VZKmJcR6CghnoLUotzMElT5V4ziHIxKwrxXQabwZOaVwG16BXQEE9ARfT5gR5QkIqSkGhjnPU zc+8Ps9HODGlfn0zc8Dv2b1n5LyuF8sbj2itW1nTrHDk2yF7G1XFjutrw++A6P8DOrVZVNu+Y dv6l7eXZ8XcLWhOxPt3eKfJHebnvplkuCtsfXxsDUnG1dyzju/F+sdEJQ8j6r68XwlevuH5uW MNX/pd2TJY+0D8ge/JN5KuHwbF+pPe/vKLEUZyQaajEXFScCAF/rbQWKAgAA X-Env-Sender: prvs=389c2e870=Andrew.Cooper3@citrix.com X-Msg-Ref: server-6.tower-21.messagelabs.com!1502458663!54458019!1 X-Originating-IP: [66.165.176.89] X-SpamReason: No, hits=0.0 required=7.0 tests=sa_preprocessor: VHJ1c3RlZCBJUDogNjYuMTY1LjE3Ni44OSA9PiAyMDMwMDc=\n, received_headers: No Received headers X-StarScan-Received: X-StarScan-Version: 9.4.45; banners=-,-,- X-VirusChecked: Checked Received: (qmail 10615 invoked from network); 11 Aug 2017 13:37:44 -0000 Received: from smtp.citrix.com (HELO SMTP.CITRIX.COM) (66.165.176.89) by server-6.tower-21.messagelabs.com with RC4-SHA encrypted SMTP; 11 Aug 2017 13:37:44 -0000 X-IronPort-AV: E=Sophos;i="5.41,357,1498521600"; d="scan'208";a="435177519" From: Andrew Cooper To: Xen-devel Date: Fri, 11 Aug 2017 14:37:10 +0100 Message-ID: <1502458630-29167-1-git-send-email-andrew.cooper3@citrix.com> X-Mailer: git-send-email 2.1.4 MIME-Version: 1.0 Cc: Andrew Cooper , Jan Beulich Subject: [Xen-devel] [PATCH] x86/config: Fix stale documentation concerning virtual layout 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 The hypercall argument translation area lives in the per-domain mappings in PML4 slot 260. Nothing currently resides in the lower canonical half above the 4GB boundary in a 32bit PV guest. Signed-off-by: Andrew Cooper Acked-by: Jan Beulich --- CC: Jan Beulich --- xen/include/asm-x86/config.h | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) diff --git a/xen/include/asm-x86/config.h b/xen/include/asm-x86/config.h index bc0730f..25af085 100644 --- a/xen/include/asm-x86/config.h +++ b/xen/include/asm-x86/config.h @@ -169,12 +169,8 @@ extern unsigned char boot_edid_info[128]; * Guest-defined use. * 0x00000000f5800000 - 0x00000000ffffffff [168MB, PML4:0] * Read-only machine-to-phys translation table (GUEST ACCESSIBLE). - * 0x0000000100000000 - 0x0000007fffffffff [508GB, PML4:0] - * Unused. - * 0x0000008000000000 - 0x000000ffffffffff [512GB, 2^39 bytes, PML4:1] - * Hypercall argument translation area. - * 0x0000010000000000 - 0x00007fffffffffff [127TB, 2^46 bytes, PML4:2-255] - * Reserved for future use. + * 0x0000000100000000 - 0x00007fffffffffff [128TB-4GB, PML4:0-255] + * Unused / Reserved for future use. */