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=-5.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 autolearn=ham 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 4D695C3A5A0 for ; Mon, 19 Aug 2019 16:28:59 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 0365822CEA for ; Mon, 19 Aug 2019 16:28:59 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="IwzNiAfh" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0365822CEA Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id A557E6B026B; Mon, 19 Aug 2019 12:28:58 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id A054A6B026C; Mon, 19 Aug 2019 12:28:58 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 8F3A56B026D; Mon, 19 Aug 2019 12:28:58 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0186.hostedemail.com [216.40.44.186]) by kanga.kvack.org (Postfix) with ESMTP id 703216B026B for ; Mon, 19 Aug 2019 12:28:58 -0400 (EDT) Received: from smtpin15.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with SMTP id 1D6D3180AD801 for ; Mon, 19 Aug 2019 16:28:58 +0000 (UTC) X-FDA: 75839711556.15.light16_140b1427fdf48 X-HE-Tag: light16_140b1427fdf48 X-Filterd-Recvd-Size: 2588 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf34.hostedemail.com (Postfix) with ESMTP for ; Mon, 19 Aug 2019 16:28:57 +0000 (UTC) Received: from willie-the-truck (236.31.169.217.in-addr.arpa [217.169.31.236]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 8C42A22CE3; Mon, 19 Aug 2019 16:28:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1566232136; bh=eGKGObceNP/kBZluizhrqLdVLBQt/wNSMAHMZmxEDOY=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=IwzNiAfhnewbiG7/94zFyMyWxOYy2jaAbbx/TiuA7BkmAjNiX30pWMXGbanURYxcl WW3UE+Hgcwaqdc+jhX57DWGiL3zbXF6acU7H8oYCHdK71zo4ewOodc+BlJ8ZyWYmnB a4pYRaJb4GsCKA3HbUTeAqCAYOqpXLBvoRxUl2bU= Date: Mon, 19 Aug 2019 17:28:51 +0100 From: Will Deacon To: Catalin Marinas , akpm@linux-foundation.org Cc: linux-arm-kernel@lists.infradead.org, linux-mm@kvack.org, linux-arch@vger.kernel.org, linux-doc@vger.kernel.org, Szabolcs Nagy , Andrey Konovalov , Kevin Brodsky , Will Deacon , Dave Hansen , Vincenzo Frascino , Dave P Martin Subject: Re: [PATCH v8 1/5] mm: untag user pointers in mmap/munmap/mremap/brk Message-ID: <20190819162851.tncj4wpwf625ofg6@willie-the-truck> References: <20190815154403.16473-1-catalin.marinas@arm.com> <20190815154403.16473-2-catalin.marinas@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190815154403.16473-2-catalin.marinas@arm.com> User-Agent: NeoMutt/20170113 (1.7.2) 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: On Thu, Aug 15, 2019 at 04:43:59PM +0100, Catalin Marinas wrote: > There isn't a good reason to differentiate between the user address > space layout modification syscalls and the other memory > permission/attributes ones (e.g. mprotect, madvise) w.r.t. the tagged > address ABI. Untag the user addresses on entry to these functions. > > Signed-off-by: Catalin Marinas > --- > mm/mmap.c | 5 +++++ > mm/mremap.c | 6 +----- > 2 files changed, 6 insertions(+), 5 deletions(-) Acked-by: Will Deacon Andrew -- please can you pick this patch up? I'll take the rest of the series via arm64 once we've finished discussing the wording details. Thanks, Will