From patchwork Wed Apr 22 09:57:37 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "gregkh@linuxfoundation.org" X-Patchwork-Id: 227125 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=-9.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, 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 B405EC5518A for ; Wed, 22 Apr 2020 10:47:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 953F420787 for ; Wed, 22 Apr 2020 10:47:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1587552462; bh=v7Vipc0VT/4/+NWQ5NLJhdexjHV4UhMafyaRIs4x8WU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=tLgLFqPrzo6rRh30MTvbBqcfmQw4bt0iEmIOKng0sGaMVk/rjYnqbEsLqf1l0b3xf O+/nD48tYH2WBAuZkEPThN/VH1M4CuIRIZHpDkbaOm4aLSLzC9gbsWeappM7sp2our UEJ2avD/DZ04G+jrUqF2U+uIqvG4EwnfWKzbTzaY= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731824AbgDVKrb (ORCPT ); Wed, 22 Apr 2020 06:47:31 -0400 Received: from mail.kernel.org ([198.145.29.99]:50984 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729665AbgDVKPe (ORCPT ); Wed, 22 Apr 2020 06:15:34 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id A2D112070B; Wed, 22 Apr 2020 10:15:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1587550534; bh=v7Vipc0VT/4/+NWQ5NLJhdexjHV4UhMafyaRIs4x8WU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=bpzjoLGuaav27l0wt7hVcgdfmIEIDy/e383t/W6dmd8BrYvlHuZP1Sc8x1+cRSkfS YVALNGKdS695TpMYmffwcMCqHjd94XNNUMOQM0GA+nlvg2oWvbP3Ed4yZOsecVNUz2 dcEDPmFXINSNzFOP5p1GSqePiAzUdMZAOJAMiQcc= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Adrian Huang , Joerg Roedel , Sasha Levin Subject: [PATCH 4.19 53/64] iommu/amd: Fix the configuration of GCR3 table root pointer Date: Wed, 22 Apr 2020 11:57:37 +0200 Message-Id: <20200422095022.347731069@linuxfoundation.org> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200422095008.799686511@linuxfoundation.org> References: <20200422095008.799686511@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@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