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=-2.2 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 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 2C11AC2D0D2 for ; Mon, 23 Dec 2019 23:16:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id F30DF2073A for ; Mon, 23 Dec 2019 23:16:37 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=shutemov-name.20150623.gappssmtp.com header.i=@shutemov-name.20150623.gappssmtp.com header.b="TZUnywbp" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726873AbfLWXQg (ORCPT ); Mon, 23 Dec 2019 18:16:36 -0500 Received: from mail-lj1-f196.google.com ([209.85.208.196]:34540 "EHLO mail-lj1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726512AbfLWXQg (ORCPT ); Mon, 23 Dec 2019 18:16:36 -0500 Received: by mail-lj1-f196.google.com with SMTP id z22so14401150ljg.1 for ; Mon, 23 Dec 2019 15:16:35 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=shutemov-name.20150623.gappssmtp.com; s=20150623; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=RoE5/OcfUMqvYyq95XjCkJqhMPq46yuirP3fwbPzXkk=; b=TZUnywbpYpJnmNeF8wEDAA/9B1nNgbBWThg4h6zAxtn2SBwMjv4uwI2NvhzER3d0N4 Zf8Rf7sAzbZxK0mJ5ns3hlih9b9BksluzGgOMzDPIjUnxtF2CkIBR6WQqZiVB21loCmC 9v/sFprorJnwshRvyli8axSiw3Tq0kbVZVY0fqugSULHUt1om7ecBcaAqAaFxp/zRPKM tIYAYooq4XIboM3KDhHg1Rw74cIvHAEBB1X0KFEaxh9Ywjrq0sM4o9ndUHB7pn5qabM8 hQptYbihh7t0w2kNqQlZsRhlIgodmM/1LHSSjqeWXKaOUkTRi9aXpvSl20bno16zLPCI gFcw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=RoE5/OcfUMqvYyq95XjCkJqhMPq46yuirP3fwbPzXkk=; b=RNWUWWpt9jS5U5buKI2P6yfdqn6tGz4UyVM4AIUkRkUXY9Vmm81kuXwvs2sPHtcPtZ iCs3GOavQ6qo1MF4A/VLpd8yVikTOOvRMKHb0FJ658rPNOJvpvhn2dzeHYwtmGbXDAU8 RjkrSXTOofRXuWk9c/MyrcIBM7tPAa5dKyb+B6BC6SDK4XmTjtr6KnrhiEYUlMAnHVIg tbxgGwuEQBgqhUMHNOmsHi7WKsrlI0Gf+U5z1XfFeQKGzqQCpyodIRYMR7KOYXS3S+Jw Hyc1+cch3+6f59+smdfQOhhhmFk4dRnqDln0jh+BMA92RaCT1B/fRtxOhcbAdbhsUzx8 3ePQ== X-Gm-Message-State: APjAAAX806A0eiVDN58jp/OvOExtr7nB+qMZLn/JklIAWpxt3YNBper6 vWxUXOgmCepIDynX4Xd5Qd4XtA== X-Google-Smtp-Source: APXvYqx7vQRGntrjaj/kks/rT2vwYm5pG1Bn5EiSp2noEsjO5oLj/jz1rco+Dj/Q0TzdLk25D7Y8Pg== X-Received: by 2002:a2e:9592:: with SMTP id w18mr19004630ljh.98.1577142994369; Mon, 23 Dec 2019 15:16:34 -0800 (PST) Received: from box.localdomain ([86.57.175.117]) by smtp.gmail.com with ESMTPSA id 195sm7645959ljj.55.2019.12.23.15.16.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 23 Dec 2019 15:16:33 -0800 (PST) Received: by box.localdomain (Postfix, from userid 1000) id 9B08C10133D; Tue, 24 Dec 2019 02:16:38 +0300 (+03) Date: Tue, 24 Dec 2019 02:16:38 +0300 From: "Kirill A. Shutemov" To: Andrew Morton Cc: "Willhalm, Thomas" , Dan Williams , "Bruggeman, Otto G" , "Aneesh Kumar K . V" , linux-mm@kvack.org, x86@kernel.org, linux-kernel@vger.kernel.org, "Kirill A. Shutemov" Subject: Re: [PATCH 0/2] Fix two above-47bit hint address vs. THP bugs Message-ID: <20191223231638.cbewgy7lfx74txde@box> References: <20191220142548.7118-1-kirill.shutemov@linux.intel.com> <20191223142552.d9bd85e588196d17fb90ee2e@linux-foundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20191223142552.d9bd85e588196d17fb90ee2e@linux-foundation.org> User-Agent: NeoMutt/20180716 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Dec 23, 2019 at 02:25:52PM -0800, Andrew Morton wrote: > On Fri, 20 Dec 2019 17:25:46 +0300 "Kirill A. Shutemov" wrote: > > > The two get_unmapped_area() implementations have to be fixed to provide > > THP-friendly mappings if above-47bit hint address is specified. > > > > Do we need a cc:stable for these? Yes, please. Otherwise users that use above-47bit hint would regress on number of PMD-mapped THPs. But it's not urgent. It's okay to cook it up in linux-next for a while. -- Kirill A. Shutemov