From nobody Mon Nov 25 09:19:57 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass header.i=@intel.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=intel.com ARC-Seal: i=1; a=rsa-sha256; t=1716359473; cv=none; d=zohomail.com; s=zohoarc; b=oJrSMALkY7xYJbDUUH5Q9DW7h34yo6aq8u9jnrsjOWp3IAMhSuC7ICiTbqPJdgRl3a6KTUThU+oqcfu7G5UyA+wkn5Toshl4Z1O+wsuAaXoVUyEJ4Lpuj7DcHKrjUDQD7YbRN0RgWBxgzsbnSsvQuopf23i+F2RxivYtxpoziGc= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1716359473; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=vM/h7P23wINBagjnl7ZI1GyDS0zsoDQbRX/MKrXpxyA=; b=FtFUj6M16F4HJL5tj2GpOnYuMcj2YWtLBXE+iiDE2AWNQ7CfWQPwvkO/d5bGTGAXEmfbdXsTR3wCmwNb80I/16MFScc+YtN8AlT0369E0VJIgrT9BMaXyyFQ/xn+E/gNUsR+t66CDuaGXquW75PRQaWfkWNeKBW97z7OOPh/0cA= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass header.i=@intel.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1716359473024183.44428752799558; Tue, 21 May 2024 23:31:13 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1s9fQo-0004mR-Ft; Wed, 22 May 2024 02:26:34 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1s9fQh-0004iR-Fw for qemu-devel@nongnu.org; Wed, 22 May 2024 02:26:29 -0400 Received: from mgamail.intel.com ([192.198.163.7]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1s9fQf-0006eK-P9 for qemu-devel@nongnu.org; Wed, 22 May 2024 02:26:27 -0400 Received: from orviesa006.jf.intel.com ([10.64.159.146]) by fmvoesa101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 May 2024 23:26:25 -0700 Received: from unknown (HELO SPR-S2600BT.bj.intel.com) ([10.240.192.124]) by orviesa006-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 May 2024 23:26:20 -0700 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1716359186; x=1747895186; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=goZvInl61uVRC5qKvio5oLdRwdDHhcN/OMVw305hMug=; b=a9TJ5Qlkr/voEC+gePR92P4GbNgWXnpElFhRAkUqMiYrbXCac2eLIJuE aPaH0Q1fLdTeHJ9QBz34lurtcA36xzwV+idzNFdSMge/pJz4lyUHpJuSh YTkJdK7y5aB/RyxxxFGzM6Fossa5ajlUsvGKpP/Ka0XcgR+Zq9NmF9h0O UmLtLBHHHHuKhItWpfpw5isNJb7Fgc9dxm36Qr5eAj/8evWHiiEXv/8X2 aNvXQvaKtPm33y/ftQUHh/eVQFT3AoCbuswKEP7xBZcuF8NtFHYOb1l6v x/7K/Z/KGk9F96V5BL3BKQqi3Q7Nm4+gfhpUsocSDOTyeyfdmT1NDUSob Q==; X-CSE-ConnectionGUID: sHxjPf7QRcyliJKCu5I5Iw== X-CSE-MsgGUID: A1z4N+euSeGh0k73ruxJNg== X-IronPort-AV: E=McAfee;i="6600,9927,11079"; a="37972523" X-IronPort-AV: E=Sophos;i="6.08,179,1712646000"; d="scan'208";a="37972523" X-CSE-ConnectionGUID: xjgoX4U7T9ifzGtiKMVNwQ== X-CSE-MsgGUID: JK3yOzy5SLy5PmdbPFcSDQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.08,179,1712646000"; d="scan'208";a="33597772" From: Zhenzhong Duan To: qemu-devel@nongnu.org Cc: alex.williamson@redhat.com, clg@redhat.com, eric.auger@redhat.com, mst@redhat.com, peterx@redhat.com, jasowang@redhat.com, jgg@nvidia.com, nicolinc@nvidia.com, joao.m.martins@oracle.com, clement.mathieu--drif@eviden.com, kevin.tian@intel.com, yi.l.liu@intel.com, chao.p.peng@intel.com, Zhenzhong Duan , Marcel Apfelbaum , Paolo Bonzini , Richard Henderson , Eduardo Habkost Subject: [PATCH rfcv2 07/17] intel_iommu: check if the input address is canonical Date: Wed, 22 May 2024 14:23:03 +0800 Message-Id: <20240522062313.453317-8-zhenzhong.duan@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240522062313.453317-1-zhenzhong.duan@intel.com> References: <20240522062313.453317-1-zhenzhong.duan@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=192.198.163.7; envelope-from=zhenzhong.duan@intel.com; helo=mgamail.intel.com X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @intel.com) X-ZM-MESSAGEID: 1716359473366100001 From: Cl=C3=A9ment Mathieu--Drif First stage translation must fail if the address to translate is not canonical. Signed-off-by: Cl=C3=A9ment Mathieu--Drif Signed-off-by: Zhenzhong Duan --- hw/i386/intel_iommu_internal.h | 2 ++ hw/i386/intel_iommu.c | 21 +++++++++++++++++++++ 2 files changed, 23 insertions(+) diff --git a/hw/i386/intel_iommu_internal.h b/hw/i386/intel_iommu_internal.h index abfdbd5f65..b6820dbca3 100644 --- a/hw/i386/intel_iommu_internal.h +++ b/hw/i386/intel_iommu_internal.h @@ -323,6 +323,8 @@ typedef enum VTDFaultReason { VTD_FR_PASID_ENTRY_P =3D 0x59, VTD_FR_PASID_TABLE_ENTRY_INV =3D 0x5b, /*Invalid PASID table entry */ =20 + VTD_FR_FS_NON_CANONICAL =3D 0x80, /* SNG.1 : Address for FS not canoni= cal.*/ + /* Output address in the interrupt address range for scalable mode */ VTD_FR_SM_INTERRUPT_ADDR =3D 0x87, VTD_FR_MAX, /* Guard */ diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c index cf29809bc1..1ea030bfbe 100644 --- a/hw/i386/intel_iommu.c +++ b/hw/i386/intel_iommu.c @@ -1801,6 +1801,7 @@ static const bool vtd_qualified_faults[] =3D { [VTD_FR_PASID_ENTRY_P] =3D true, [VTD_FR_PASID_TABLE_ENTRY_INV] =3D true, [VTD_FR_SM_INTERRUPT_ADDR] =3D true, + [VTD_FR_FS_NON_CANONICAL] =3D true, [VTD_FR_MAX] =3D false, }; =20 @@ -1912,6 +1913,20 @@ static inline uint64_t vtd_get_flpte_addr(uint64_t f= lpte, uint8_t aw) return flpte & VTD_FL_PT_BASE_ADDR_MASK(aw); } =20 +/* Return true if IOVA is canonical, otherwise false. */ +static bool vtd_iova_fl_check_canonical(IntelIOMMUState *s, uint64_t iova, + VTDContextEntry *ce, uint32_t pasi= d) +{ + uint64_t iova_limit =3D vtd_iova_limit(s, ce, s->aw_bits, pasid); + uint64_t upper_bits_mask =3D ~(iova_limit - 1); + uint64_t upper_bits =3D iova & upper_bits_mask; + bool msb =3D ((iova & (iova_limit >> 1)) !=3D 0); + return !( + (!msb && (upper_bits !=3D 0)) || + (msb && (upper_bits !=3D upper_bits_mask)) + ); +} + /* * Given the @iova, get relevant @flptep. @flpte_level will be the last le= vel * of the translation, can be used for deciding the size of large page. @@ -1927,6 +1942,12 @@ static int vtd_iova_to_flpte(IntelIOMMUState *s, VTD= ContextEntry *ce, uint32_t offset; uint64_t flpte; =20 + if (!vtd_iova_fl_check_canonical(s, iova, ce, pasid)) { + error_report_once("%s: detected non canonical IOVA (iova=3D0x%" PR= Ix64 "," + "pasid=3D0x%" PRIx32 ")", __func__, iova, pasid); + return -VTD_FR_FS_NON_CANONICAL; + } + while (true) { offset =3D vtd_iova_fl_level_offset(iova, level); flpte =3D vtd_get_flpte(addr, offset); --=20 2.34.1