From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id AB070C3A5A1 for ; Wed, 21 Aug 2019 16:47:47 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 72197233FC for ; Wed, 21 Aug 2019 16:47:47 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 72197233FC Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id F1E276B030A; Wed, 21 Aug 2019 12:47:46 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id EA7E26B0319; Wed, 21 Aug 2019 12:47:46 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id D207E6B031B; Wed, 21 Aug 2019 12:47:46 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0066.hostedemail.com [216.40.44.66]) by kanga.kvack.org (Postfix) with ESMTP id A7A156B030A for ; Wed, 21 Aug 2019 12:47:46 -0400 (EDT) Received: from smtpin04.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with SMTP id 45B968248AB4 for ; Wed, 21 Aug 2019 16:47:46 +0000 (UTC) X-FDA: 75847016532.04.tank18_9515b7911a27 X-HE-Tag: tank18_9515b7911a27 X-Filterd-Recvd-Size: 2621 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by imf43.hostedemail.com (Postfix) with ESMTP for ; Wed, 21 Aug 2019 16:47:43 +0000 (UTC) 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 B85EA360; Wed, 21 Aug 2019 09:47:42 -0700 (PDT) Received: from arrakis.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 09F003F718; Wed, 21 Aug 2019 09:47:40 -0700 (PDT) From: Catalin Marinas To: linux-arm-kernel@lists.infradead.org, linux-mm@kvack.org Cc: Andrew Morton , Vincenzo Frascino , Will Deacon , Andrey Konovalov , Szabolcs Nagy , Kevin Brodsky , Dave P Martin , Dave Hansen , linux-doc@vger.kernel.org, linux-arch@vger.kernel.org Subject: [PATCH v9 0/3] arm64 tagged address ABI Date: Wed, 21 Aug 2019 17:47:27 +0100 Message-Id: <20190821164730.47450-1-catalin.marinas@arm.com> X-Mailer: git-send-email 2.23.0.rc0 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Hi, This series is an update to the arm64 tagged address ABI documentation patches v8, posted here: http://lkml.kernel.org/r/20190815154403.16473-1-catalin.marinas@arm.com >From v8, I dropped patches 2 and 3 as they've been queued by Will via the arm64 tree. Reposting patch 1 (unmodified) as it should be merged via the mm tree. Changes in v9: - Replaced the emphasized/bold font with a typewriter one for function/constant names - Simplified the mmap/brk bullet points when describing the tagged pointer origin - Reworded expected syscall behaviour with valid tagged pointers - Reworded the prctl/ioctl restrictions to clarify the allowed tagged pointers w.r.t. user data access by the kernel Catalin Marinas (1): mm: untag user pointers in mmap/munmap/mremap/brk Vincenzo Frascino (2): arm64: Define Documentation/arm64/tagged-address-abi.rst arm64: Relax Documentation/arm64/tagged-pointers.rst Documentation/arm64/tagged-address-abi.rst | 156 +++++++++++++++++++++ Documentation/arm64/tagged-pointers.rst | 23 ++- mm/mmap.c | 5 + mm/mremap.c | 6 +- 4 files changed, 178 insertions(+), 12 deletions(-) create mode 100644 Documentation/arm64/tagged-address-abi.rst