From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <SRS0=57S+=7B=lists.freedesktop.org=intel-gfx-bounces@kernel.org>
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=-3.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED,
	HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,
	URIBL_BLOCKED,USER_AGENT_GIT 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 B6EE1C433E3
	for <intel-gfx@archiver.kernel.org>; Tue, 19 May 2020 00:22:07 +0000 (UTC)
Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177])
	(using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
	(No client certificate requested)
	by mail.kernel.org (Postfix) with ESMTPS id 7C9932075F
	for <intel-gfx@archiver.kernel.org>; Tue, 19 May 2020 00:22:07 +0000 (UTC)
Authentication-Results: mail.kernel.org;
	dkim=fail reason="signature verification failed" (2048-bit key) header.d=nvidia.com header.i=@nvidia.com header.b="d8/4HFn9"
DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7C9932075F
Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=nvidia.com
Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=intel-gfx-bounces@lists.freedesktop.org
Received: from gabe.freedesktop.org (localhost [127.0.0.1])
	by gabe.freedesktop.org (Postfix) with ESMTP id D4F676E4CB;
	Tue, 19 May 2020 00:22:06 +0000 (UTC)
Received: from hqnvemgate24.nvidia.com (hqnvemgate24.nvidia.com
 [216.228.121.143])
 by gabe.freedesktop.org (Postfix) with ESMTPS id 4BC616E25E;
 Tue, 19 May 2020 00:21:28 +0000 (UTC)
Received: from hqpgpgate102.nvidia.com (Not Verified[216.228.121.13]) by
 hqnvemgate24.nvidia.com (using TLS: TLSv1.2, DES-CBC3-SHA)
 id <B5ec325f90001>; Mon, 18 May 2020 17:19:05 -0700
Received: from hqmail.nvidia.com ([172.20.161.6])
 by hqpgpgate102.nvidia.com (PGP Universal service);
 Mon, 18 May 2020 17:21:27 -0700
X-PGP-Universal: processed;
 by hqpgpgate102.nvidia.com on Mon, 18 May 2020 17:21:27 -0700
Received: from HQMAIL101.nvidia.com (172.20.187.10) by HQMAIL109.nvidia.com
 (172.20.187.15) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Tue, 19 May
 2020 00:21:26 +0000
Received: from rnnvemgw01.nvidia.com (10.128.109.123) by HQMAIL101.nvidia.com
 (172.20.187.10) with Microsoft SMTP Server (TLS) id 15.0.1473.3 via
 Frontend Transport; Tue, 19 May 2020 00:21:26 +0000
Received: from sandstorm.nvidia.com (Not Verified[10.2.55.90]) by
 rnnvemgw01.nvidia.com with Trustwave SEG (v7, 5, 8, 10121)
 id <B5ec326850001>; Mon, 18 May 2020 17:21:25 -0700
From: John Hubbard <jhubbard@nvidia.com>
To: Andrew Morton <akpm@linux-foundation.org>
Date: Mon, 18 May 2020 17:21:20 -0700
Message-ID: <20200519002124.2025955-1-jhubbard@nvidia.com>
X-Mailer: git-send-email 2.26.2
MIME-Version: 1.0
X-NVConfidentiality: public
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1;
 t=1589847545; bh=1lNBScctJydku+3qdXzIM8KVklxinSyJ9aQap+4RKHU=;
 h=X-PGP-Universal:From:To:CC:Subject:Date:Message-ID:X-Mailer:
 MIME-Version:X-NVConfidentiality:Content-Transfer-Encoding:
 Content-Type;
 b=d8/4HFn9ZUARS86BznlNTVIHyfbSi1m+F4pm1l5haXjy+vhXCgsMz4/xCOcVLezCF
 xMWFQ2d/tT5p23YZWaKhH7BcbcYBMiVijTdCBTGiO1/8z5jcLB20qJUVoujCQFg2MG
 iCSLwXt0K3zVZ4uCfFOIONfV1xrwV6SLP9cskkG8zh0ajLTf2IOX0GtRQ5cyaMpXs9
 ajGwwcTVJnUkPJpMwar401mjYDKd46PXQ01hjKGPP8VDS/Az3nqyxYswzRAKFnLFBN
 cnje3+tnXgVji4aCd18GlNlCWLYQyHzjcn/rsWTSxnmDj/bHgssbfrq41SSoyOOg8K
 rWxduGVnAqdUw==
X-Mailman-Approved-At: Tue, 19 May 2020 00:22:05 +0000
Subject: [Intel-gfx] [PATCH 0/4] mm/gup, drm/i915: refactor gup_fast,
 convert to pin_user_pages()
X-BeenThere: intel-gfx@lists.freedesktop.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Intel graphics driver community testing & development
 <intel-gfx.lists.freedesktop.org>
List-Unsubscribe: <https://lists.freedesktop.org/mailman/options/intel-gfx>,
 <mailto:intel-gfx-request@lists.freedesktop.org?subject=unsubscribe>
List-Archive: <https://lists.freedesktop.org/archives/intel-gfx>
List-Post: <mailto:intel-gfx@lists.freedesktop.org>
List-Help: <mailto:intel-gfx-request@lists.freedesktop.org?subject=help>
List-Subscribe: <https://lists.freedesktop.org/mailman/listinfo/intel-gfx>,
 <mailto:intel-gfx-request@lists.freedesktop.org?subject=subscribe>
Cc: Matthew Wilcox <willy@infradead.org>, dri-devel@lists.freedesktop.org,
 David Airlie <airlied@linux.ie>, John Hubbard <jhubbard@nvidia.com>,
 intel-gfx@lists.freedesktop.org, LKML <linux-kernel@vger.kernel.org>,
 Chris Wilson <chris@chris-wilson.co.uk>, linux-mm@kvack.org,
 Souptick Joarder <jrdr.linux@gmail.com>, Matthew Auld <matthew.auld@intel.com>
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
Errors-To: intel-gfx-bounces@lists.freedesktop.org
Sender: "Intel-gfx" <intel-gfx-bounces@lists.freedesktop.org>

This needs to go through Andrew's -mm tree, due to adding a new gup.c
routine. However, I would really love to have some testing from the
drm/i915 folks, because I haven't been able to run-time test that part
of it.

Otherwise, though, the series has passed my basic run time testing:
some LTP tests, some xfs and etx4 non-destructive xfstests, and an
assortment of other smaller ones: vm selftests, io_uring_register, a
few more. But that's only on one particular machine. Also, cross-compile
tests for half a dozen arches all pass.

Details:

In order to convert the drm/i915 driver from get_user_pages() to
pin_user_pages(), a FOLL_PIN equivalent of __get_user_pages_fast() was
required. That led to refactoring __get_user_pages_fast(), with the
following goals:

1) As above: provide a pin_user_pages*() routine for drm/i915 to call,
   in place of __get_user_pages_fast(),

2) Get rid of the gup.c duplicate code for walking page tables with
   interrupts disabled. This duplicate code is a minor maintenance
   problem anyway.

3) Make it easy for an upcoming patch from Souptick, which aims to
   convert __get_user_pages_fast() to use a gup_flags argument, instead
   of a bool writeable arg.  Also, if this series looks good, we can
   ask Souptick to change the name as well, to whatever the consensus
   is. My initial recommendation is: get_user_pages_fast_only(), to
   match the new pin_user_pages_only().

John Hubbard (4):
  mm/gup: move __get_user_pages_fast() down a few lines in gup.c
  mm/gup: refactor and de-duplicate gup_fast() code
  mm/gup: introduce pin_user_pages_fast_only()
  drm/i915: convert get_user_pages() --> pin_user_pages()

 drivers/gpu/drm/i915/gem/i915_gem_userptr.c |  22 +--
 include/linux/mm.h                          |   3 +
 mm/gup.c                                    | 150 ++++++++++++--------
 3 files changed, 107 insertions(+), 68 deletions(-)


base-commit: 642b151f45dd54809ea00ecd3976a56c1ec9b53d
-- 
2.26.2

_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx