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=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,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 B7728C2D0DB for ; Fri, 24 Jan 2020 10:05:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 86C5420704 for ; Fri, 24 Jan 2020 10:05:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1579860345; bh=ZQJcr8zWH7QXXD6C2PQS8x5HXi5pY5gTQTAD7NXS2S4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=dietpk0hWicr0DItL+Ruyz4/VTsrLB/HnHSuUM5OpbqfCVa3gTH0QUDdC+qvuA0yw O+OL+5uQoTex8TK3SmQQ/EAxG5GBMEdKUz3B2+sbZ+a3OYytIXkJ4D7FqoZdPzXDKC bxDuddcWVRo5JMYiJbF8JxsfK3/jZwNoIlQXiyqc= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389240AbgAXKFi (ORCPT ); Fri, 24 Jan 2020 05:05:38 -0500 Received: from mail.kernel.org ([198.145.29.99]:42104 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2389231AbgAXKFc (ORCPT ); Fri, 24 Jan 2020 05:05:32 -0500 Received: from localhost (unknown [145.15.244.15]) (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 F09E1218AC; Fri, 24 Jan 2020 10:05:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1579860332; bh=ZQJcr8zWH7QXXD6C2PQS8x5HXi5pY5gTQTAD7NXS2S4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=YbkvpPM+4FCkSPmQqgwlV9iGtdkNuzQUciyXWgenOiv1DRQzWQ1vRTxp7qTSh/gMO Ucfi9xaf64jCExl3RBqgFrRjSM38BcZej+T8W2oxHTIjktNRisWmyJZDLCDBznSgFJ sBqFwrwS3gV8gzGbiwUUkf8eyynKFiZpV2O8NhxE= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Filippo Sironi , Joerg Roedel , Sasha Levin Subject: [PATCH 4.14 307/343] iommu/amd: Wait for completion of IOTLB flush in attach_device Date: Fri, 24 Jan 2020 10:32:05 +0100 Message-Id: <20200124093000.246276106@linuxfoundation.org> X-Mailer: git-send-email 2.25.0 In-Reply-To: <20200124092919.490687572@linuxfoundation.org> References: <20200124092919.490687572@linuxfoundation.org> User-Agent: quilt/0.66 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 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 d09c24825734e..778f167be2d35 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -2160,6 +2160,8 @@ skip_ats_check: */ domain_flush_tlb_pde(domain); + domain_flush_complete(domain); + return ret; } -- 2.20.1