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=-10.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,URIBL_BLOCKED,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 2B2B2C04EB9 for ; Wed, 5 Dec 2018 10:08:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E7071206B7 for ; Wed, 5 Dec 2018 10:08:22 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="Nfp1TWo1" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E7071206B7 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.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 S1728638AbeLEJkV (ORCPT ); Wed, 5 Dec 2018 04:40:21 -0500 Received: from mail.kernel.org ([198.145.29.99]:44562 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728622AbeLEJkR (ORCPT ); Wed, 5 Dec 2018 04:40:17 -0500 Received: from sasha-vm.mshome.net (unknown [213.57.143.11]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 7D8FE20879; Wed, 5 Dec 2018 09:40:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1544002816; bh=fvDSwMPecPrK8UcLoJunLkFq1FGtgpxIaMqqyF3TTAU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Nfp1TWo1uTjyd9/z0O4mF20eWIiDMXx3ucurLnYUiadpIn9Zd6m4NP/udqWfkCXzR wcOhDdGYcbrj549cQSGzURHui6g8EWakC8mC0ylIdTR0Ix4/VCNuyNqo2ICXn5ah8W 75lEfNVcO4UOZ1F9bmGt5uY82mgTzZFQvgKEWAF0= From: Sasha Levin To: stable@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Artemy Kovalyov , Moni Shoua , Leon Romanovsky , Jason Gunthorpe , Sasha Levin , linux-rdma@vger.kernel.org Subject: [PATCH AUTOSEL 4.19 076/123] IB/mlx5: Fix page fault handling for MW Date: Wed, 5 Dec 2018 04:35:08 -0500 Message-Id: <20181205093555.5386-76-sashal@kernel.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20181205093555.5386-1-sashal@kernel.org> References: <20181205093555.5386-1-sashal@kernel.org> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Artemy Kovalyov [ 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; -- 2.17.1