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=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 A4F66C2BA19 for ; Wed, 15 Apr 2020 12:18:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7802820857 for ; Wed, 15 Apr 2020 12:18:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1586953126; bh=teWoWnOgcSPlBj5vzx0uZY+S9BuzrPPocOvM7gkc/pk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=haBNrw7t6PqAguTq5ApjqSH1N2YTPQOXD0dG2rqpENaQuj7aRpKhL4dDwyFoN/LJ4 MPKg+HCbkjSy4TNwLU8q0yIRY48kjZu8im3qZrl1q+aYgIYTvJSE8WNZnXRl2bZPSa DGuyzJkU+R36r9pVjq4M7zDRJz3j6Guz8Hs565Yk= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S368902AbgDOMSo (ORCPT ); Wed, 15 Apr 2020 08:18:44 -0400 Received: from mail.kernel.org ([198.145.29.99]:40876 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2409266AbgDOLqM (ORCPT ); Wed, 15 Apr 2020 07:46:12 -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 B8323206A2; Wed, 15 Apr 2020 11:46:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1586951170; bh=teWoWnOgcSPlBj5vzx0uZY+S9BuzrPPocOvM7gkc/pk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=LMda104mlA0kTZ+N5uies7LdbxZ622DSjNjuEIyYtx+nPENJizGoOJugEcnJbdQuh bq21xSAa0G3iSjjnilTvJLyPFrQQK2Q0IaLOF3/+ZbJMr6b7E0osnkfIpVGwgIfjm/ qjS8hYkc1Wszn+ITGTQ/tinm0CwRhLxt6tegjoRg= 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 74/84] iommu/vt-d: Fix page request descriptor size Date: Wed, 15 Apr 2020 07:44:31 -0400 Message-Id: <20200415114442.14166-74-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200415114442.14166-1-sashal@kernel.org> References: <20200415114442.14166-1-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: 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 3020506180c10..1d3816cd65d57 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