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 9206DC2BA19 for ; Wed, 15 Apr 2020 12:11:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 61B04206A2 for ; Wed, 15 Apr 2020 12:11:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1586952683; bh=v7Vipc0VT/4/+NWQ5NLJhdexjHV4UhMafyaRIs4x8WU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=FJvFf8qopDx/HavZ4zTzxiU3pWxwvhepxOE3cT87qqcmjjoegGpUfVM7Qf4PmrCGv iTjtGu87SyGwCJIlh2LdjfNi9oas4YQhUyC1WfOOR7VPCltZJVj2hckfFZNXgMOdXx 79uHittw+dG47IavQQ7LBn/G+yUraTKJsXhwgicQ= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S368575AbgDOMLS (ORCPT ); Wed, 15 Apr 2020 08:11:18 -0400 Received: from mail.kernel.org ([198.145.29.99]:42436 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2897607AbgDOLrJ (ORCPT ); Wed, 15 Apr 2020 07:47:09 -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 4515B216FD; Wed, 15 Apr 2020 11:47:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1586951228; bh=v7Vipc0VT/4/+NWQ5NLJhdexjHV4UhMafyaRIs4x8WU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=xDS/aLTEbXClbhYF4wKeFKtyP2Ir0Po1X5gVN0gqfjqmgZivMtejCv+ZV8Oyi8fTr J7pbRwQPPXfgPZ0XsBxmvfRoQqkpApmS41hZ1xU3xu5aLPLJ3eSCuAyiFUry/nFqHW KnyP7ifFx2CTSEPEYfUfwwG7BfWywn4N9oTv+oko= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Adrian Huang , Joerg Roedel , Sasha Levin , iommu@lists.linux-foundation.org Subject: [PATCH AUTOSEL 4.19 39/40] iommu/amd: Fix the configuration of GCR3 table root pointer Date: Wed, 15 Apr 2020 07:46:22 -0400 Message-Id: <20200415114623.14972-39-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200415114623.14972-1-sashal@kernel.org> References: <20200415114623.14972-1-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: Adrian Huang [ Upstream commit c20f36534666e37858a14e591114d93cc1be0d34 ] The SPA of the GCR3 table root pointer[51:31] masks 20 bits. However, this requires 21 bits (Please see the AMD IOMMU specification). This leads to the potential failure when the bit 51 of SPA of the GCR3 table root pointer is 1'. Signed-off-by: Adrian Huang Fixes: 52815b75682e2 ("iommu/amd: Add support for IOMMUv2 domain mode") Signed-off-by: Joerg Roedel Signed-off-by: Sasha Levin --- drivers/iommu/amd_iommu_types.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iommu/amd_iommu_types.h b/drivers/iommu/amd_iommu_types.h index 69f3d4c95b530..859b06424e5c4 100644 --- a/drivers/iommu/amd_iommu_types.h +++ b/drivers/iommu/amd_iommu_types.h @@ -352,7 +352,7 @@ #define DTE_GCR3_VAL_A(x) (((x) >> 12) & 0x00007ULL) #define DTE_GCR3_VAL_B(x) (((x) >> 15) & 0x0ffffULL) -#define DTE_GCR3_VAL_C(x) (((x) >> 31) & 0xfffffULL) +#define DTE_GCR3_VAL_C(x) (((x) >> 31) & 0x1fffffULL) #define DTE_GCR3_INDEX_A 0 #define DTE_GCR3_INDEX_B 1 -- 2.20.1