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=-7.5 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_PASS,USER_AGENT_MUTT 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 B6B0CC10F0E for ; Thu, 18 Apr 2019 21:07:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8F06520869 for ; Thu, 18 Apr 2019 21:07:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389958AbfDRVHN (ORCPT ); Thu, 18 Apr 2019 17:07:13 -0400 Received: from mx1.redhat.com ([209.132.183.28]:48546 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728264AbfDRVHM (ORCPT ); Thu, 18 Apr 2019 17:07:12 -0400 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 76AD2307CB3B; Thu, 18 Apr 2019 21:07:12 +0000 (UTC) Received: from redhat.com (unknown [10.20.6.236]) by smtp.corp.redhat.com (Postfix) with ESMTPS id A564E60BE5; Thu, 18 Apr 2019 21:07:04 +0000 (UTC) Date: Thu, 18 Apr 2019 17:07:02 -0400 From: Jerome Glisse To: Peter Xu Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, David Hildenbrand , Hugh Dickins , Maya Gokhale , Pavel Emelyanov , Johannes Weiner , Martin Cracauer , Shaohua Li , Andrea Arcangeli , Mike Kravetz , Denis Plotnikov , Mike Rapoport , Marty McFadden , Mel Gorman , "Kirill A . Shutemov" , "Dr . David Alan Gilbert" Subject: Re: [PATCH v3 00/28] userfaultfd: write protection support Message-ID: <20190418210702.GN3288@redhat.com> References: <20190320020642.4000-1-peterx@redhat.com> <20190409060839.GE3389@xz-x1> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20190409060839.GE3389@xz-x1> User-Agent: Mutt/1.11.3 (2019-02-01) X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.42]); Thu, 18 Apr 2019 21:07:12 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Apr 09, 2019 at 02:08:39PM +0800, Peter Xu wrote: > On Wed, Mar 20, 2019 at 10:06:14AM +0800, Peter Xu wrote: > > This series implements initial write protection support for > > userfaultfd. Currently both shmem and hugetlbfs are not supported > > yet, but only anonymous memory. This is the 3nd version of it. > > > > The latest code can also be found at: > > > > https://github.com/xzpeter/linux/tree/uffd-wp-merged > > > > Note again that the first 5 patches in the series can be seen as > > isolated work on page fault mechanism. I would hope that they can be > > considered to be reviewed/picked even earlier than the rest of the > > series since it's even useful for existing userfaultfd MISSING case > > [8]. > > Ping - any further comments for v3? Is there any chance to have this > series (or the first 5 patches) for 5.2? Few issues left, sorry for taking so long to get to review, sometimes it goes to the bottom of my stack. I am guessing this should be merge through Andrew ? Unless Andrea have a tree for userfaultfd (i am not following all that closely). >From my point of view it almost all look good. I sent review before this email. Maybe we need some review from x86 folks on the x86 arch changes for the feature ? Cheers, Jérôme