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=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 D26B8C2D0DB for ; Tue, 28 Jan 2020 14:12:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A53B82468F for ; Tue, 28 Jan 2020 14:12:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1580220775; bh=DIl9R+19J49vh/sxpIbMjuZ4xZRcXQT7Ob5x1jG0enc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=lQeZ8sNTVkv/vTskOqtwR7PQG2Upk3sALDnY8Ra/JmDuG20nvJohssZyAbobsfAmt vA5vGwHwa8ib+FGHQovFeADrjmserfX7z5QU9qjjfx6VyDDy/9hdGy0KOsuXE+R1Og f9WY5ZLcIkjQFx2/BW0pn1IFuub8vg+sPl3R1/gQ= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727193AbgA1OMx (ORCPT ); Tue, 28 Jan 2020 09:12:53 -0500 Received: from mail.kernel.org ([198.145.29.99]:34278 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728847AbgA1OMt (ORCPT ); Tue, 28 Jan 2020 09:12:49 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.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 8F8DC2468D; Tue, 28 Jan 2020 14:12:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1580220769; bh=DIl9R+19J49vh/sxpIbMjuZ4xZRcXQT7Ob5x1jG0enc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=N8yiXRS3Rgnmz2QRrxZ5ID25yOiTNJfd1QX2FqcRCCSb/vBcxspWd1t2uV7mYhCSw +nkLaw/eqBjQoeKeX6RnfnLSZVwe/uiKr816jcoFab0jpDjMQYsqMgxFwDGiI+3Lyl BBnRXwzXYNVyF6VRpDNmaD2ZN+0GMRzLX1mqb51c= 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 4.4 139/183] iommu/amd: Wait for completion of IOTLB flush in attach_device Date: Tue, 28 Jan 2020 15:05:58 +0100 Message-Id: <20200128135843.633421896@linuxfoundation.org> X-Mailer: git-send-email 2.25.0 In-Reply-To: <20200128135829.486060649@linuxfoundation.org> References: <20200128135829.486060649@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 0ad8b7c78a438..66a406e87e117 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -2184,6 +2184,8 @@ static int attach_device(struct device *dev, */ domain_flush_tlb_pde(domain); + domain_flush_complete(domain); + return ret; } -- 2.20.1