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,URIBL_BLOCKED,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 DB120C38A2F for ; Sat, 18 Apr 2020 14:56:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B10A6206D6 for ; Sat, 18 Apr 2020 14:56:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1587221767; bh=gNEqwMIk6W4ZqVW7sBL8/0aKuAMn8CjvIZXrWp1EKoU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=xsJKTjJkzed+1H5ECCg8JvPxU0Q4pXN+8skrS1S0T4CpeITqSBuA9j4kkWN7LitHc 2ntR/LJx/y/r4sweKMwVXqrFX6x5UNcKfkYjvlBlD3rdHFurlLvLaa/L7YjDwUhpjS Cvr37M/Bt4TB7kDw9jOl8ijCkjvS0hUgi7sGk39Q= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726748AbgDROkz (ORCPT ); Sat, 18 Apr 2020 10:40:55 -0400 Received: from mail.kernel.org ([198.145.29.99]:49404 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726785AbgDROky (ORCPT ); Sat, 18 Apr 2020 10:40:54 -0400 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 6B6F922202; Sat, 18 Apr 2020 14:40:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1587220854; bh=gNEqwMIk6W4ZqVW7sBL8/0aKuAMn8CjvIZXrWp1EKoU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=IM19uS3UMZzax61jiV24FZYZ0/ZRzULK6WyCvV7OwVZfkxjPKk8SxxkqqOIw6Aoe7 K4/Olq2bCI5Jk4iOvYrcuSwsBPgRK7/MY2a+L7OZ0vAMVdWCNGvL0iCIsqXQs/EScp qoCU37RYvPGST2RhuQGeDAxfieoaNZNWDqRsOte0= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Jacob Pan , Lu Baolu , Liu Yi L , Joerg Roedel , Sasha Levin , iommu@lists.linux-foundation.org Subject: [PATCH AUTOSEL 5.4 05/78] iommu/vt-d: Fix page request descriptor size Date: Sat, 18 Apr 2020 10:39:34 -0400 Message-Id: <20200418144047.9013-5-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200418144047.9013-1-sashal@kernel.org> References: <20200418144047.9013-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Jacob Pan [ Upstream commit 52355fb1919ef7ed9a38e0f3de6e928de1f57217 ] Intel VT-d might support PRS (Page Reqest Support) when it's running in the scalable mode. Each page request descriptor occupies 32 bytes and is 32-bytes aligned. The page request descriptor offset mask should be 32-bytes aligned. Fixes: 5b438f4ba315d ("iommu/vt-d: Support page request in scalable mode") Signed-off-by: Lu Baolu Signed-off-by: Liu Yi L Signed-off-by: Jacob Pan Signed-off-by: Joerg Roedel Signed-off-by: Sasha Levin --- drivers/iommu/intel-svm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iommu/intel-svm.c b/drivers/iommu/intel-svm.c index 518d0b2d12afd..5313d043a6cf2 100644 --- a/drivers/iommu/intel-svm.c +++ b/drivers/iommu/intel-svm.c @@ -502,7 +502,7 @@ struct page_req_dsc { u64 priv_data[2]; }; -#define PRQ_RING_MASK ((0x1000 << PRQ_ORDER) - 0x10) +#define PRQ_RING_MASK ((0x1000 << PRQ_ORDER) - 0x20) static bool access_error(struct vm_area_struct *vma, struct page_req_dsc *req) { -- 2.20.1