From patchwork Tue May 12 16:36:52 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dave Martin X-Patchwork-Id: 11543523 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 3622D139A for ; Tue, 12 May 2020 16:39:49 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id F084E20714 for ; Tue, 12 May 2020 16:39:48 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="ig6dbd20" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org F084E20714 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=bfPwrWJSMrcCt6Row6eTot7WLoX1IjC1El/eJOeudZM=; b=ig6dbd20Uyjd+Lpz3spP4Kj7dK 337rOK5thDY2h+SjvcoTNrzDPiCKmBoBZzQh2fmBg9OTwNRc1IWJyERn2PO7B08PlA78/uavPckaN zwJIGCa7WfQ85UVgIpjx64LcppQgrvaXWEHr1K2ThboyNzek4c+MqE23+7aqBwlDY7lUsmcdGrH9f B+JDTdektXp69vrD5xySnpuwldeNTQVtQokFp/wIDr3U8zPXVjTrsp+OrRd7UpTvZuls/XPXcGgTC DAD+OroVnnV3lZ2DH/O4BH+Z23P6M6w0nIdt+gxx8bOeb1e/12WkNV80MS6XbUlb9/Dt9lL8W1svy KhnEznzg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jYXwU-00019r-A0; Tue, 12 May 2020 16:39:42 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jYXui-0007v0-U3 for linux-arm-kernel@lists.infradead.org; Tue, 12 May 2020 16:37:55 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 1CA6711D4; Tue, 12 May 2020 09:37:52 -0700 (PDT) Received: from e103592.cambridge.arm.com (usa-sjc-imap-foss1.foss.arm.com [10.121.207.14]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 2E5883F305; Tue, 12 May 2020 09:37:51 -0700 (PDT) From: Dave Martin To: mtk.manpages@gmail.com Subject: [PATCH 07/14] prctl.2: Document removal of Intel MPX prctls Date: Tue, 12 May 2020 17:36:52 +0100 Message-Id: <1589301419-24459-8-git-send-email-Dave.Martin@arm.com> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1589301419-24459-1-git-send-email-Dave.Martin@arm.com> References: <1589301419-24459-1-git-send-email-Dave.Martin@arm.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200512_093753_048906_2242E690 X-CRM114-Status: UNSURE ( 9.26 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -2.3 (--) X-Spam-Report: SpamAssassin version 3.4.4 on bombadil.infradead.org summary: Content analysis details: (-2.3 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [217.140.110.172 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-arch@vger.kernel.org, linux-man@vger.kernel.org, Thomas Gleixner , Dave Hansen , linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org The Intel MPX API was removed from Linux 5.4. See Linux commit f240652b6032 ("x86/mpx: Remove MPX APIs") Document this change. Signed-off-by: Dave Martin Cc: Dave Hansen Cc: Thomas Gleixner Acked-by: Dave Hansen --- man2/prctl.2 | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/man2/prctl.2 b/man2/prctl.2 index 7a3fc5c..a84fb1d 100644 --- a/man2/prctl.2 +++ b/man2/prctl.2 @@ -784,7 +784,7 @@ option enabled. .RE .\" prctl PR_MPX_ENABLE_MANAGEMENT .TP -.BR PR_MPX_ENABLE_MANAGEMENT ", " PR_MPX_DISABLE_MANAGEMENT " (since Linux 3.19) " +.BR PR_MPX_ENABLE_MANAGEMENT ", " PR_MPX_DISABLE_MANAGEMENT " (since Linux 3.19, removed in Linux 5.4; only on x86) " .\" commit fe3d197f84319d3bce379a9c0dc17b1f48ad358c .\" See also http://lwn.net/Articles/582712/ .\" See also https://gcc.gnu.org/wiki/Intel%20MPX%20support%20in%20the%20GCC%20compiler @@ -859,6 +859,12 @@ had been called. .IP For further information on Intel MPX, see the kernel source file .IR Documentation/x86/intel_mpx.txt . +.IP +.\" commit f240652b6032b48ad7fa35c5e701cc4c8d697c0b +.\" See also https://lkml.kernel.org/r/20190705175321.DB42F0AD@viggo.jf.intel.com +Due to a lack of toolchain support, +.BR PR_MPX_ENABLE_MANAGEMENT " and " PR_MPX_DISABLE_MANAGEMENT +are not supported by Linux 5.4 or later. .\" prctl PR_SET_NAME .TP .BR PR_SET_NAME " (since Linux 2.6.9)"