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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 26081C33CAF for ; Thu, 16 Jan 2020 18:40:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E216A2077B for ; Thu, 16 Jan 2020 18:40:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1579200036; bh=+Odn+h8Q5EuGZ9Q+Z9sZ/rzkiyJVGyEikcgRAqyYqME=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=HdqK+CEZuCrlXckzqKqUcONAWOAQ8Z+qfZNTDAGYimevKYCc+o4XFfoQo8g13zWeA Y/iS0UP72yOaat5AuHys3p4WOwS71SE6DSjbkoxWS43Mhbd+ggKV/kkabl4y2PBEKs e6dzMoBMIIifIXrZ2JFAgmiesbPbzhpiUNCk3pac= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2436911AbgAPSk3 (ORCPT ); Thu, 16 Jan 2020 13:40:29 -0500 Received: from mail.kernel.org ([198.145.29.99]:54262 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2390393AbgAPRMG (ORCPT ); Thu, 16 Jan 2020 12:12:06 -0500 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (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 90E2E24692; Thu, 16 Jan 2020 17:12:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1579194726; bh=+Odn+h8Q5EuGZ9Q+Z9sZ/rzkiyJVGyEikcgRAqyYqME=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=PRk2nrr0TOuLHLxtQQdfnhOS2QrXnsyw18ffemNCDIRpuphC+7e/4UWrPlyyHEuJD 7UxNhyM6wPSTrnb6+A2ZH8a+EAytfhmKLi8d/Z42nKaIwQXCMtlYUrtfBYElwFavT/ jQziL5au5HxDupnRS/HhDgog5Kvng+9VeNXb/OJ8= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Filippo Sironi , Joerg Roedel , Sasha Levin , iommu@lists.linux-foundation.org Subject: [PATCH AUTOSEL 4.19 560/671] iommu/amd: Wait for completion of IOTLB flush in attach_device Date: Thu, 16 Jan 2020 12:03:18 -0500 Message-Id: <20200116170509.12787-297-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200116170509.12787-1-sashal@kernel.org> References: <20200116170509.12787-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Filippo Sironi [ Upstream commit 0b15e02f0cc4fb34a9160de7ba6db3a4013dc1b7 ] To make sure the domain tlb flush completes before the function returns, explicitly wait for its completion. Signed-off-by: Filippo Sironi Fixes: 42a49f965a8d ("amd-iommu: flush domain tlb when attaching a new device") [joro: Added commit message and fixes tag] Signed-off-by: Joerg Roedel Signed-off-by: Sasha Levin --- drivers/iommu/amd_iommu.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index 9991386fb700..bea19aa33758 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -2153,6 +2153,8 @@ static int attach_device(struct device *dev, */ domain_flush_tlb_pde(domain); + domain_flush_complete(domain); + return ret; } -- 2.20.1