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=-3.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,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 71980C7618F for ; Wed, 17 Jul 2019 00:15:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 339852184E for ; Wed, 17 Jul 2019 00:15:32 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=nvidia.com header.i=@nvidia.com header.b="leC/Gb3q" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389027AbfGQAPb (ORCPT ); Tue, 16 Jul 2019 20:15:31 -0400 Received: from hqemgate15.nvidia.com ([216.228.121.64]:11572 "EHLO hqemgate15.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728597AbfGQAPa (ORCPT ); Tue, 16 Jul 2019 20:15:30 -0400 Received: from hqpgpgate101.nvidia.com (Not Verified[216.228.121.13]) by hqemgate15.nvidia.com (using TLS: TLSv1.2, DES-CBC3-SHA) id ; Tue, 16 Jul 2019 17:15:36 -0700 Received: from hqmail.nvidia.com ([172.20.161.6]) by hqpgpgate101.nvidia.com (PGP Universal service); Tue, 16 Jul 2019 17:15:29 -0700 X-PGP-Universal: processed; by hqpgpgate101.nvidia.com on Tue, 16 Jul 2019 17:15:29 -0700 Received: from HQMAIL101.nvidia.com (172.20.187.10) by HQMAIL101.nvidia.com (172.20.187.10) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Wed, 17 Jul 2019 00:15:29 +0000 Received: from hqnvemgw01.nvidia.com (172.20.150.20) by HQMAIL101.nvidia.com (172.20.187.10) with Microsoft SMTP Server (TLS) id 15.0.1473.3 via Frontend Transport; Wed, 17 Jul 2019 00:15:29 +0000 Received: from rcampbell-dev.nvidia.com (Not Verified[10.110.48.66]) by hqnvemgw01.nvidia.com with Trustwave SEG (v7,5,8,10121) id ; Tue, 16 Jul 2019 17:15:29 -0700 From: Ralph Campbell To: CC: , Ralph Campbell Subject: [PATCH 0/3] mm/hmm: fixes for device private page migration Date: Tue, 16 Jul 2019 17:14:43 -0700 Message-ID: <20190717001446.12351-1-rcampbell@nvidia.com> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 X-NVConfidentiality: public Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1; t=1563322536; bh=QsS0ZqN4YggOSSwkzcpaGSaK/G4QRt1uJsrCicwV7Ig=; h=X-PGP-Universal:From:To:CC:Subject:Date:Message-ID:X-Mailer: MIME-Version:X-NVConfidentiality:Content-Type: Content-Transfer-Encoding; b=leC/Gb3qxcTdl7ZxhD/ykWwGw86krGQRaZO7OGchr2aUxHZbQW/aj6ghYjKJaB2sg LN6dtU9KfwqXAhpso+OWUQNKC6cFk18ZRuZIGgr/EGOvWAdmnylyUg58D3H5vjfvGn 2FAgd6tdTzVwWKB/uTtaEY0+pfsdaMKKJLZgbSedqpka1JJb9zIfa7ooPuLPKnEYyK yzYjLrl4H8kwhU3Q3YBZ28rIzMsv3YfeAGBrRijqQu+amFWj7kLzlLhiSc1sgqNkfl 8GW7bQfebpC8hnNsFLRBGLDCDPTkhXEoXjkMujCpSGkUy+27tEFrSY+YZQY6bLFB1I K51ZVi3Q3NZgg== Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Testing the latest linux git tree turned up a few bugs with page migration to and from ZONE_DEVICE private and anonymous pages. Hopefully it clarifies how ZONE_DEVICE private struct page uses the same mapping and index fields from the source anonymous page mapping. Patch #3 was sent earlier and this is v2 with an updated change log. http://lkml.kernel.org/r/20190709223556.28908-1-rcampbell@nvidia.com Ralph Campbell (3): mm: document zone device struct page reserved fields mm/hmm: fix ZONE_DEVICE anon page mapping reuse mm/hmm: Fix bad subpage pointer in try_to_unmap_one include/linux/mm_types.h | 9 ++++++++- kernel/memremap.c | 4 ++++ mm/rmap.c | 1 + 3 files changed, 13 insertions(+), 1 deletion(-) --=20 2.20.1