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=-2.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED 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 CC553C433DB for ; Mon, 1 Feb 2021 07:32:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7D3C364E2F for ; Mon, 1 Feb 2021 07:32:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232135AbhBAHbs (ORCPT ); Mon, 1 Feb 2021 02:31:48 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51350 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230264AbhBAHbl (ORCPT ); Mon, 1 Feb 2021 02:31:41 -0500 Received: from mail-pl1-x631.google.com (mail-pl1-x631.google.com [IPv6:2607:f8b0:4864:20::631]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CF849C061573 for ; Sun, 31 Jan 2021 23:31:00 -0800 (PST) Received: by mail-pl1-x631.google.com with SMTP id x9so3563283plb.5 for ; Sun, 31 Jan 2021 23:31:00 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:subject:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; bh=7Wf2cF3e9k78cMqXqvh0XRPIL3bx/v81G3vSujturaQ=; b=gFXIhpd6zrAtV68bLKBOirmY30iP6XeWOd2pMFptBGFPOx2izYqJfFNyH/+5L1GSFa GIValQNF77bIxo0Fz1GaAeR7sDwS/nRDQcJIPns7LpVlbBcWOcwx9DXPCyNlvBz+Usyi Qc/jpgxXc5NTSkT8FjSu9Aq5x4n6cm4d0GAzMMDh/skFKEM10SA28x20bOv7KSokkfMW INCwOiSrScbxhbXzJLQeWWYtt0r7JpLRzjw61PJRfsWNAEF+uFk9yoCuRhKtDdMkyRUU JzEQmoJT8PjykTdjCHdSgDSzptfgU8cFHYL2k1B6pF5x5tVA9OkMKxXYFF3Alfp+TxGP opBw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:subject:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; bh=7Wf2cF3e9k78cMqXqvh0XRPIL3bx/v81G3vSujturaQ=; b=leyo+TVqepGEqZCBwpb02hWP5M9qaIglvWbiohc1iICnNmiPLQaEdJJfDtAeMoUdra csswYfPaSo88Ae7aae4v+bp80NAurKR0ea+H3R34h0why1twRA3z3ONb7S1P75XGF/VW ZcrB6eAOy0NwgdghNMpU0k3eIfBsFAs8e3xBhy2e6ZnNHzdqqUIYBR/JaAw2nIXziSHG uYaRcPoeu47kwW5PH4qzFp0lQFXlSd//006J9SyZtZSOq4ycZIDTatMKW7JmDMgq/CEg dJlHUEeOld16py/6Rhvx4YXEWE6blm1UMMOEXSzOnOVXrrzRK3X9y+HqGHe7mAb9ZuF5 AbGQ== X-Gm-Message-State: AOAM530QK+mDZVgdU0DmI/EFDYwB7C0yGjvGGXSLRzd9ukbqGf0eKQeu VaQptF0SmYCm3IRWxPi/AbM= X-Google-Smtp-Source: ABdhPJz0ZqAE366h/178v/KlQ+Tc6wTwuG1a9cdJ+MYsq8EY5/qjVIeXswPLwymf4UsOEkyq+uSmfw== X-Received: by 2002:a17:90a:ca8f:: with SMTP id y15mr863895pjt.119.1612164659920; Sun, 31 Jan 2021 23:30:59 -0800 (PST) Received: from [192.168.88.245] (c-24-6-216-183.hsd1.ca.comcast.net. [24.6.216.183]) by smtp.gmail.com with ESMTPSA id l13sm14950502pjh.2.2021.01.31.23.30.58 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Sun, 31 Jan 2021 23:30:59 -0800 (PST) Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 13.4 \(3608.120.23.2.4\)) Subject: Re: [RFC 01/20] mm/tlb: fix fullmm semantics From: Nadav Amit In-Reply-To: Date: Sun, 31 Jan 2021 23:30:57 -0800 Cc: Linux-MM , LKML , Andrea Arcangeli , Andrew Morton , Dave Hansen , Peter Zijlstra , Thomas Gleixner , Will Deacon , Yu Zhao , Nick Piggin , X86 ML Content-Transfer-Encoding: 7bit Message-Id: <4A2E5039-D8EA-4689-8147-4F12338CFBBE@gmail.com> References: <20210131001132.3368247-1-namit@vmware.com> <20210131001132.3368247-2-namit@vmware.com> To: Andy Lutomirski X-Mailer: Apple Mail (2.3608.120.23.2.4) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > On Jan 30, 2021, at 6:57 PM, Andy Lutomirski wrote: > > On Sat, Jan 30, 2021 at 5:19 PM Nadav Amit wrote: >>> On Jan 30, 2021, at 5:02 PM, Andy Lutomirski wrote: >>> >>> 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? >> >> Possible. How about mm_torn_down? > > Sure. Or mm_exiting, perhaps? mm_exiting indeed sounds better.