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=-6.3 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS 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 BA638C433E0 for ; Sun, 31 Jan 2021 01:02:32 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 4C79864DFA for ; Sun, 31 Jan 2021 01:02:32 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4C79864DFA 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 845B76B0005; Sat, 30 Jan 2021 20:02:31 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 7F64E6B0006; Sat, 30 Jan 2021 20:02:31 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 70B866B006C; Sat, 30 Jan 2021 20:02:31 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0189.hostedemail.com [216.40.44.189]) by kanga.kvack.org (Postfix) with ESMTP id 5A54B6B0005 for ; Sat, 30 Jan 2021 20:02:31 -0500 (EST) Received: from smtpin08.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with ESMTP id 2050A181AEF1E for ; Sun, 31 Jan 2021 01:02:31 +0000 (UTC) X-FDA: 77764269702.08.knife30_551151f275b5 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin08.hostedemail.com (Postfix) with ESMTP id 06A141819E623 for ; Sun, 31 Jan 2021 01:02:31 +0000 (UTC) X-HE-Tag: knife30_551151f275b5 X-Filterd-Recvd-Size: 2854 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf21.hostedemail.com (Postfix) with ESMTP for ; Sun, 31 Jan 2021 01:02:30 +0000 (UTC) Received: by mail.kernel.org (Postfix) with ESMTPSA id 4D22464E1B for ; Sun, 31 Jan 2021 01:02:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1612054949; bh=d0735n6S/Vm5Q8cSSbumHsQrStTHOJtD0MC5+xI4v2Q=; h=References:In-Reply-To:From:Date:Subject:To:Cc:From; b=TRt+2gfRF55vRA4ZYI+7bti3FB92qTfJN9Ri5+/0PziY3lTJpJ6VNQnkOO0l2SSHr F1tfVyu2W0ayplfrflQApRI8fEEEmA+QRyU2XdOyuf7x56e/pHGQNKo39yUvKRTMQ0 HUwpSwVg3926TJHX9MO6JdiUDihqbz1MKoqgGb9/XhkJUeI365X7t+pTBflx8QI4qv cQ4Q9nc1UaJW+h5ypfWrmhofz5M6EnT70LOWOv//igikmEeQL8Pf72wT+USgq/PnKg oyAsBj9GZYT4721F3FGDxXqIV5spPWz2i+DTIajM3Fhfu9oVbq9peJ0tRyzL/TrQU7 7alZHZ11nscuw== Received: by mail-ej1-f43.google.com with SMTP id a10so18686753ejg.10 for ; Sat, 30 Jan 2021 17:02:29 -0800 (PST) X-Gm-Message-State: AOAM533dvx/++fEWiyjA6GVL5Z1+4QdBOJRHmewWHZllx0g1YfRrFIUR iEH3u/qE8lOGhT7Ho/G7TI2kv0uSprxicuEQKqpEYA== X-Google-Smtp-Source: ABdhPJwnWrOJS0MPqnl4YTkmZ8VNRJauXOuZtdE2Ab4udtV8dDodM9sQHb6yipm15L/pVa5j7OVUOLDNj6P/iI2J1io= X-Received: by 2002:a17:906:5608:: with SMTP id f8mr11140726ejq.101.1612054947857; Sat, 30 Jan 2021 17:02:27 -0800 (PST) MIME-Version: 1.0 References: <20210131001132.3368247-1-namit@vmware.com> <20210131001132.3368247-2-namit@vmware.com> In-Reply-To: <20210131001132.3368247-2-namit@vmware.com> From: Andy Lutomirski Date: Sat, 30 Jan 2021 17:02:16 -0800 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: [RFC 01/20] mm/tlb: fix fullmm semantics To: Nadav Amit Cc: Linux-MM , LKML , Nadav Amit , Andrea Arcangeli , Andrew Morton , Andy Lutomirski , Dave Hansen , Peter Zijlstra , Thomas Gleixner , Will Deacon , Yu Zhao , Nick Piggin , X86 ML Content-Type: text/plain; charset="UTF-8" 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 Sat, Jan 30, 2021 at 4:16 PM Nadav Amit wrote: > > From: Nadav Amit > > fullmm in mmu_gather is supposed to indicate that the mm is torn-down > (e.g., on process exit) and can therefore allow certain optimizations. > However, tlb_finish_mmu() sets fullmm, when in fact it want to say that > the TLB should be fully flushed. Maybe also rename fullmm?