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 2B10FC2BA19 for ; Wed, 15 Apr 2020 12:02:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F1E8E20737 for ; Wed, 15 Apr 2020 12:02:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1586952177; bh=BtC7U9P5apcHlMtbq2Wc/WnKSOeCOUtOQd4q6P+uVCA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=YFT16L7FTE5512Zlpal7mA10j7gu/CdicwHOAjsgYMBUSv77mjNt58aNoX4RGlbPS 2WSwjhxlUUApr8mK3g9juOZOZVte/PT3LEtCPEDLUGbpcFDeo0DSWIAsI5pN/Yiiew vSIHY65Z+s0XNP57zrZ63BxAi4imK9Nx7jHA9Itc= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S368216AbgDOMCq (ORCPT ); Wed, 15 Apr 2020 08:02:46 -0400 Received: from mail.kernel.org ([198.145.29.99]:44312 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2409473AbgDOLsc (ORCPT ); Wed, 15 Apr 2020 07:48:32 -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 99F3E21582; Wed, 15 Apr 2020 11:48:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1586951311; bh=BtC7U9P5apcHlMtbq2Wc/WnKSOeCOUtOQd4q6P+uVCA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=m8/tTBZQUk40GcXOD5rvw/TXP7tgXOOOFpLkoJO6gbTx5CRGPpIKjW01p2Ecey5Nw e0pFFbTIW8dfPPTue0lViV/YSdzOKG/efgxEHQGCRhmHQQeX0WqapCI9DPt9L8VTdG R2nXpCN0LP7p9qbsb9yXMFKkboCfyUeBZ7tfpPLg= 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 4.4 14/14] iommu/amd: Fix the configuration of GCR3 table root pointer Date: Wed, 15 Apr 2020 07:48:14 -0400 Message-Id: <20200415114814.15954-14-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200415114814.15954-1-sashal@kernel.org> References: <20200415114814.15954-1-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 b08cf57bf4554..695d4e235438c 100644 --- a/drivers/iommu/amd_iommu_types.h +++ b/drivers/iommu/amd_iommu_types.h @@ -303,7 +303,7 @@ #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