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=-9.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_PASS,USER_AGENT_GIT 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 ED489C67839 for ; Fri, 14 Dec 2018 12:39:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B2AC220892 for ; Fri, 14 Dec 2018 12:39:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1544791140; bh=mlTzS/pOp5LPPyaiDrapxs2PSFztz/iJfb4sPRbmvN8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=GYq6+K+YSnRNlRovW/IVHEV66tLCapzZHW+Y0Il+nR7Qm588BOKNuRR7abJV+olMT hIg21y7eTHUShWJ4CJIOoS5HwYv5smWP+er/fGvozbPodGcFFE4Gv4VdyejxRsmVo/ vZIJprHmdmBYEHQ9u1QdodHafV3LqVB0vu4+f86A= DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B2AC220892 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linuxfoundation.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730589AbeLNMi7 (ORCPT ); Fri, 14 Dec 2018 07:38:59 -0500 Received: from mail.kernel.org ([198.145.29.99]:50086 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730088AbeLNMFS (ORCPT ); Fri, 14 Dec 2018 07:05:18 -0500 Received: from localhost (5356596B.cm-6-7b.dynamic.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id CDD0721479; Fri, 14 Dec 2018 12:05:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1544789117; bh=mlTzS/pOp5LPPyaiDrapxs2PSFztz/iJfb4sPRbmvN8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=WStJEwDDi8bCvN9phnF4YHDrySfIu6zXtkgHAkhvmqlHGOQ94EFLiXt2/LaiAAzqm kbQcwAnPBKRbftDaK33fkC/PgRsh/N67LPbn53Re2lc6W8Rlde7ejZ6GwuUtXI+U+z QRo2avmPcJSZ48XxkyQHJPZcNHBB7WOELJlhG/PE= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Artemy Kovalyov , Moni Shoua , Leon Romanovsky , Jason Gunthorpe , Sasha Levin Subject: [PATCH 4.19 093/142] IB/mlx5: Fix page fault handling for MW Date: Fri, 14 Dec 2018 12:59:38 +0100 Message-Id: <20181214115750.774157027@linuxfoundation.org> X-Mailer: git-send-email 2.20.0 In-Reply-To: <20181214115747.053633987@linuxfoundation.org> References: <20181214115747.053633987@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review X-Patchwork-Hint: ignore MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 4.19-stable review patch. If anyone has any objections, please let me know. ------------------ [ Upstream commit 75b7b86bdb0df37e08e44b6c1f99010967f81944 ] Memory windows are implemented with an indirect MKey, when a page fault event comes for a MW Mkey we need to find the MR at the end of the list of the indirect MKeys by iterating on all items from the first to the last. The offset calculated during this process has to be zeroed after the first iteration or the next iteration will start from a wrong address, resulting incorrect ODP faulting behavior. Fixes: db570d7deafb ("IB/mlx5: Add ODP support to MW") Signed-off-by: Artemy Kovalyov Signed-off-by: Moni Shoua Signed-off-by: Leon Romanovsky Signed-off-by: Jason Gunthorpe Signed-off-by: Sasha Levin --- drivers/infiniband/hw/mlx5/odp.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/infiniband/hw/mlx5/odp.c b/drivers/infiniband/hw/mlx5/odp.c index d216e0d2921d..9e1cac8cb260 100644 --- a/drivers/infiniband/hw/mlx5/odp.c +++ b/drivers/infiniband/hw/mlx5/odp.c @@ -724,6 +724,7 @@ static int pagefault_single_data_segment(struct mlx5_ib_dev *dev, head = frame; bcnt -= frame->bcnt; + offset = 0; } break; -- 2.19.1