From patchwork Wed Sep 11 05:22:46 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: "Duan, Zhenzhong" X-Patchwork-Id: 13799712 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 68228EE020B for ; Wed, 11 Sep 2024 05:28:20 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1soFsA-0002X1-Th; Wed, 11 Sep 2024 01:26:34 -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 1soFs8-0002Vi-K8 for qemu-devel@nongnu.org; Wed, 11 Sep 2024 01:26:32 -0400 Received: from mgamail.intel.com ([192.198.163.11]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1soFs6-0004Mp-TQ for qemu-devel@nongnu.org; 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10 Sep 2024 22:26:30 -0700 X-CSE-ConnectionGUID: bM1DBTJOQYi+FWXU99n8Ew== X-CSE-MsgGUID: cXNaAeeZSi2jTh7Rr1uevA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.10,219,1719903600"; d="scan'208";a="67536465" Received: from spr-s2600bt.bj.intel.com ([10.240.192.127]) by orviesa006-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Sep 2024 22:26:26 -0700 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 , Paolo Bonzini , Richard Henderson , Eduardo Habkost , Marcel Apfelbaum Subject: [PATCH v3 08/17] intel_iommu: Set accessed and dirty bits during first stage translation Date: Wed, 11 Sep 2024 13:22:46 +0800 Message-Id: <20240911052255.1294071-9-zhenzhong.duan@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240911052255.1294071-1-zhenzhong.duan@intel.com> References: <20240911052255.1294071-1-zhenzhong.duan@intel.com> MIME-Version: 1.0 Received-SPF: pass client-ip=192.198.163.11; envelope-from=zhenzhong.duan@intel.com; helo=mgamail.intel.com X-Spam_score_int: -44 X-Spam_score: -4.5 X-Spam_bar: ---- X-Spam_report: (-4.5 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.145, 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Clément Mathieu--Drif Signed-off-by: Clément Mathieu--Drif Signed-off-by: Zhenzhong Duan Acked-by: Jason Wang --- hw/i386/intel_iommu_internal.h | 3 +++ hw/i386/intel_iommu.c | 25 ++++++++++++++++++++++++- 2 files changed, 27 insertions(+), 1 deletion(-) diff --git a/hw/i386/intel_iommu_internal.h b/hw/i386/intel_iommu_internal.h index 668583aeca..7786ef7624 100644 --- a/hw/i386/intel_iommu_internal.h +++ b/hw/i386/intel_iommu_internal.h @@ -324,6 +324,7 @@ typedef enum VTDFaultReason { /* Output address in the interrupt address range for scalable mode */ VTD_FR_SM_INTERRUPT_ADDR = 0x87, + VTD_FR_FS_BIT_UPDATE_FAILED = 0x91, /* SFS.10 */ VTD_FR_MAX, /* Guard */ } VTDFaultReason; @@ -549,6 +550,8 @@ typedef struct VTDRootEntry VTDRootEntry; /* Masks for First Level Paging Entry */ #define VTD_FL_P 1ULL #define VTD_FL_RW_MASK (1ULL << 1) +#define VTD_FL_A 0x20 +#define VTD_FL_D 0x40 /* Second Level Page Translation Pointer*/ #define VTD_SM_PASID_ENTRY_SLPTPTR (~0xfffULL) diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c index be73366a64..180505423d 100644 --- a/hw/i386/intel_iommu.c +++ b/hw/i386/intel_iommu.c @@ -1822,6 +1822,7 @@ static const bool vtd_qualified_faults[] = { [VTD_FR_PASID_TABLE_ENTRY_INV] = true, [VTD_FR_SM_INTERRUPT_ADDR] = true, [VTD_FR_FS_NON_CANONICAL] = true, + [VTD_FR_FS_BIT_UPDATE_FAILED] = true, [VTD_FR_MAX] = false, }; @@ -1941,6 +1942,20 @@ static bool vtd_iova_fl_check_canonical(IntelIOMMUState *s, uint64_t iova, } } +static MemTxResult vtd_set_flag_in_pte(dma_addr_t base_addr, uint32_t index, + uint64_t pte, uint64_t flag) +{ + if (pte & flag) { + return MEMTX_OK; + } + pte |= flag; + pte = cpu_to_le64(pte); + return dma_memory_write(&address_space_memory, + base_addr + index * sizeof(pte), + &pte, sizeof(pte), + MEMTXATTRS_UNSPECIFIED); +} + /* * Given the @iova, get relevant @flptep. @flpte_level will be the last level * of the translation, can be used for deciding the size of large page. @@ -1954,7 +1969,7 @@ static int vtd_iova_to_flpte(IntelIOMMUState *s, VTDContextEntry *ce, dma_addr_t addr = vtd_get_iova_pgtbl_base(s, ce, pasid); uint32_t level = vtd_get_iova_level(s, ce, pasid); uint32_t offset; - uint64_t flpte; + uint64_t flpte, flag_ad = VTD_FL_A; if (!vtd_iova_fl_check_canonical(s, iova, ce, pasid)) { error_report_once("%s: detected non canonical IOVA (iova=0x%" PRIx64 "," @@ -1992,6 +2007,14 @@ static int vtd_iova_to_flpte(IntelIOMMUState *s, VTDContextEntry *ce, return -VTD_FR_PAGING_ENTRY_RSVD; } + if (vtd_is_last_pte(flpte, level) && is_write) { + flag_ad |= VTD_FL_D; + } + + if (vtd_set_flag_in_pte(addr, offset, flpte, flag_ad) != MEMTX_OK) { + return -VTD_FR_FS_BIT_UPDATE_FAILED; + } + if (vtd_is_last_pte(flpte, level)) { *flptep = flpte; *flpte_level = level;