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 52582C38A2F for ; Sat, 18 Apr 2020 14:47:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 29E8B21BE5 for ; Sat, 18 Apr 2020 14:47:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1587221256; bh=vqyA98ISkgtNizDCDh4+BfcOp+FH3LtWJpuHIiV0s3U=; h=From:To:Cc:Subject:Date:List-ID:From; b=J3Qk4UcnFV4upMNlobPq7jMKebDUVHTq8G1fUl4OddsFhps1mT9DcP12rlsZETQQ6 Ph7MwEe4RLJILOp3jabMorrm06IJi/T0w5q8fHgdYQWeeRdPWB07uDYhewr29SYHWo VuUtxZgdV0WYYKUwVQsoWGK9Wm5QYGII5o9PHpfk= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729039AbgDROrf (ORCPT ); Sat, 18 Apr 2020 10:47:35 -0400 Received: from mail.kernel.org ([198.145.29.99]:55694 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728740AbgDROoI (ORCPT ); Sat, 18 Apr 2020 10:44:08 -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 C3A6A21974; Sat, 18 Apr 2020 14:44:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1587221047; bh=vqyA98ISkgtNizDCDh4+BfcOp+FH3LtWJpuHIiV0s3U=; h=From:To:Cc:Subject:Date:From; b=vlXT1WzqKKEyomJ6ZBEKiXMTBJIrP/E6oZwKTE6Hjm3jPDwSowjxrWXjiMCyYMr5l at/7Dvs2widBnZqMKjPlltPDu4Qw1UniuBN0mKHcg/AUMCrYhJER5NHf3YHm82gm0y 8u3KPaeDLjBpPTtF4X/+ZS4F5Oy5BHHJ7GR05cFc= 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 01/23] iommu/amd: Fix the configuration of GCR3 table root pointer Date: Sat, 18 Apr 2020 10:43:43 -0400 Message-Id: <20200418144405.10565-1-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 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