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 7C871C2BB55 for ; Wed, 15 Apr 2020 12:02:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4B16E20575 for ; Wed, 15 Apr 2020 12:02:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1586952130; bh=vqyA98ISkgtNizDCDh4+BfcOp+FH3LtWJpuHIiV0s3U=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=M8KyUxj3c12RQnivcci6aWsHniDxxbmuLtVO2ZaO3AEK9GmXtCE/oQJTDKGBx7b/Q r10zyugRVs8MHKsR3Ctl+GxcDkUBfGU+I4GjzF9WoXkMMGNVgvEWw9OyfyAp6OT+0y OP8ejKMtROAi+SZEPRzn0o/lFhSfCSX8T2gkDdVY= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2409709AbgDOMCJ (ORCPT ); Wed, 15 Apr 2020 08:02:09 -0400 Received: from mail.kernel.org ([198.145.29.99]:43890 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2406606AbgDOLsN (ORCPT ); Wed, 15 Apr 2020 07:48:13 -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 ADDE8214D8; Wed, 15 Apr 2020 11:48:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1586951293; bh=vqyA98ISkgtNizDCDh4+BfcOp+FH3LtWJpuHIiV0s3U=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ASsmYYe5N9wnTqx1IMb1+9hwoan8SLNB5f1tbl/8VXwCvvGOWeyQkluVAWubjLtZX o9OUN5DwADLFAufJYEi6WVSDsuR2+N8jsy9SHYLByKE3nKKE8A87NQKm0X3NL9Syv+ 4JCPNJ69JETo/sUIPygXL4a2qjJEBMTz4SwqdC+g= 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 4.9 21/21] iommu/amd: Fix the configuration of GCR3 table root pointer Date: Wed, 15 Apr 2020 07:47:48 -0400 Message-Id: <20200415114748.15713-21-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200415114748.15713-1-sashal@kernel.org> References: <20200415114748.15713-1-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 0d91785ebdc34..da3fbf82d1cf4 100644 --- a/drivers/iommu/amd_iommu_types.h +++ b/drivers/iommu/amd_iommu_types.h @@ -329,7 +329,7 @@ #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