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Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1hVeTA-0004Jn-Nq; Tue, 28 May 2019 15:56:56 +0000 Received: from foss.arm.com ([217.140.101.70]) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1hVeT7-0004JE-Tg for linux-arm-kernel@lists.infradead.org; Tue, 28 May 2019 15:56:55 +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 8540E341; Tue, 28 May 2019 08:56:53 -0700 (PDT) Received: from e103592.cambridge.arm.com (usa-sjc-imap-foss1.foss.arm.com [10.72.51.249]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id C9F273F59C; Tue, 28 May 2019 08:56:47 -0700 (PDT) Date: Tue, 28 May 2019 16:56:45 +0100 From: Dave Martin To: Catalin Marinas Subject: Re: [PATCH v15 05/17] arms64: untag user pointers passed to memory syscalls Message-ID: <20190528155644.GD28398@e103592.cambridge.arm.com> References: <00eb4c63fefc054e2c8d626e8fedfca11d7c2600.1557160186.git.andreyknvl@google.com> <20190527143719.GA59948@MBP.local> <20190528145411.GA709@e119886-lin.cambridge.arm.com> <20190528154057.GD32006@arrakis.emea.arm.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20190528154057.GD32006@arrakis.emea.arm.com> User-Agent: Mutt/1.5.23 (2014-03-12) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190528_085653_966588_68D64F83 X-CRM114-Status: GOOD ( 11.31 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , kvm@vger.kernel.org, Szabolcs Nagy , Will Deacon , dri-devel@lists.freedesktop.org, linux-mm@kvack.org, linux-kselftest@vger.kernel.org, Vincenzo Frascino , Jacob Bramley , Leon Romanovsky , linux-rdma@vger.kernel.org, amd-gfx@lists.freedesktop.org, Dmitry Vyukov , Ramana Radhakrishnan , Evgeniy Stepanov , linux-media@vger.kernel.org, Kees Cook , Ruben Ayrapetyan , Andrey Konovalov , Kevin Brodsky , Alex Williamson , Yishai Hadas , Mauro Carvalho Chehab , linux-arm-kernel@lists.infradead.org, Kostya Serebryany , Greg Kroah-Hartman , Felix Kuehling , linux-kernel@vger.kernel.org, Jens Wiklander , Lee Smith , Alexander Deucher , Andrew Murray , Andrew Morton , Robin Murphy , Christian Koenig , Luc Van Oostenryck Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Tue, May 28, 2019 at 04:40:58PM +0100, Catalin Marinas wrote: [...] > My thoughts on allowing tags (quick look): > > brk - no [...] > mlock, mlock2, munlock - yes > mmap - no (we may change this with MTE but not for TBI) [...] > mprotect - yes I haven't following this discussion closely... what's the rationale for the inconsistencies here (feel free to refer me back to the discussion if it's elsewhere). Cheers ---Dave _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel