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a="26721617" X-IronPort-AV: E=Sophos;i="6.11,165,1725346800"; d="scan'208";a="26721617" X-CSE-ConnectionGUID: EeTM1D4yT1WkoBwr6vdHbQ== X-CSE-MsgGUID: i1PhKHChQEW4tFDrkA65xQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.11,165,1725346800"; d="scan'208";a="77749381" 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, Yu Zhang , Zhenzhong Duan , Marcel Apfelbaum , Paolo Bonzini , Richard Henderson , Eduardo Habkost Subject: [PATCH v4 01/17] intel_iommu: Use the latest fault reasons defined by spec Date: Mon, 30 Sep 2024 17:26:15 +0800 Message-Id: <20240930092631.2997543-2-zhenzhong.duan@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240930092631.2997543-1-zhenzhong.duan@intel.com> References: <20240930092631.2997543-1-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=198.175.65.21; envelope-from=zhenzhong.duan@intel.com; helo=mgamail.intel.com X-Spam_score_int: -21 X-Spam_score: -2.2 X-Spam_bar: -- X-Spam_report: (-2.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.095, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, 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: 1727688596048116600 From: Yu Zhang Spec revision 3.0 or above defines more detailed fault reasons for scalable mode. So introduce them into emulation code, see spec section 7.1.2 for details. Note spec revision has no relation with VERSION register, Guest kernel should not use that register to judge what features are supported. Instead cap/ecap bits should be checked. Signed-off-by: Yu Zhang Signed-off-by: Zhenzhong Duan Reviewed-by: Cl=C3=A9ment Mathieu--Drif Reviewed-by: Yi Liu Acked-by: Jason Wang --- hw/i386/intel_iommu_internal.h | 9 ++++++++- hw/i386/intel_iommu.c | 25 ++++++++++++++++--------- 2 files changed, 24 insertions(+), 10 deletions(-) diff --git a/hw/i386/intel_iommu_internal.h b/hw/i386/intel_iommu_internal.h index c818c819fe..d0f9d4589d 100644 --- a/hw/i386/intel_iommu_internal.h +++ b/hw/i386/intel_iommu_internal.h @@ -311,7 +311,14 @@ typedef enum VTDFaultReason { * request while disabled */ VTD_FR_IR_SID_ERR =3D 0x26, /* Invalid Source-ID */ =20 - VTD_FR_PASID_TABLE_INV =3D 0x58, /*Invalid PASID table entry */ + /* PASID directory entry access failure */ + VTD_FR_PASID_DIR_ACCESS_ERR =3D 0x50, + /* The Present(P) field of pasid directory entry is 0 */ + VTD_FR_PASID_DIR_ENTRY_P =3D 0x51, + VTD_FR_PASID_TABLE_ACCESS_ERR =3D 0x58, /* PASID table entry access fa= ilure */ + /* The Present(P) field of pasid table entry is 0 */ + VTD_FR_PASID_ENTRY_P =3D 0x59, + VTD_FR_PASID_TABLE_ENTRY_INV =3D 0x5b, /*Invalid PASID table entry */ =20 /* Output address in the interrupt address range for scalable mode */ VTD_FR_SM_INTERRUPT_ADDR =3D 0x87, diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c index eb5aa2b2d5..378e417b27 100644 --- a/hw/i386/intel_iommu.c +++ b/hw/i386/intel_iommu.c @@ -796,7 +796,7 @@ static int vtd_get_pdire_from_pdir_table(dma_addr_t pas= id_dir_base, addr =3D pasid_dir_base + index * entry_size; if (dma_memory_read(&address_space_memory, addr, pdire, entry_size, MEMTXATTRS_UNSPECIFIED)) { - return -VTD_FR_PASID_TABLE_INV; + return -VTD_FR_PASID_DIR_ACCESS_ERR; } =20 pdire->val =3D le64_to_cpu(pdire->val); @@ -814,6 +814,7 @@ static int vtd_get_pe_in_pasid_leaf_table(IntelIOMMUSta= te *s, dma_addr_t addr, VTDPASIDEntry *pe) { + uint8_t pgtt; uint32_t index; dma_addr_t entry_size; X86IOMMUState *x86_iommu =3D X86_IOMMU_DEVICE(s); @@ -823,7 +824,7 @@ static int vtd_get_pe_in_pasid_leaf_table(IntelIOMMUSta= te *s, addr =3D addr + index * entry_size; if (dma_memory_read(&address_space_memory, addr, pe, entry_size, MEMTXATTRS_UNSPECIFIED)) { - return -VTD_FR_PASID_TABLE_INV; + return -VTD_FR_PASID_TABLE_ACCESS_ERR; } for (size_t i =3D 0; i < ARRAY_SIZE(pe->val); i++) { pe->val[i] =3D le64_to_cpu(pe->val[i]); @@ -831,11 +832,13 @@ static int vtd_get_pe_in_pasid_leaf_table(IntelIOMMUS= tate *s, =20 /* Do translation type check */ if (!vtd_pe_type_check(x86_iommu, pe)) { - return -VTD_FR_PASID_TABLE_INV; + return -VTD_FR_PASID_TABLE_ENTRY_INV; } =20 - if (!vtd_is_level_supported(s, VTD_PE_GET_LEVEL(pe))) { - return -VTD_FR_PASID_TABLE_INV; + pgtt =3D VTD_PE_GET_TYPE(pe); + if (pgtt =3D=3D VTD_SM_PASID_ENTRY_SLT && + !vtd_is_level_supported(s, VTD_PE_GET_LEVEL(pe))) { + return -VTD_FR_PASID_TABLE_ENTRY_INV; } =20 return 0; @@ -876,7 +879,7 @@ static int vtd_get_pe_from_pasid_table(IntelIOMMUState = *s, } =20 if (!vtd_pdire_present(&pdire)) { - return -VTD_FR_PASID_TABLE_INV; + return -VTD_FR_PASID_DIR_ENTRY_P; } =20 ret =3D vtd_get_pe_from_pdire(s, pasid, &pdire, pe); @@ -885,7 +888,7 @@ static int vtd_get_pe_from_pasid_table(IntelIOMMUState = *s, } =20 if (!vtd_pe_present(pe)) { - return -VTD_FR_PASID_TABLE_INV; + return -VTD_FR_PASID_ENTRY_P; } =20 return 0; @@ -938,7 +941,7 @@ static int vtd_ce_get_pasid_fpd(IntelIOMMUState *s, } =20 if (!vtd_pdire_present(&pdire)) { - return -VTD_FR_PASID_TABLE_INV; + return -VTD_FR_PASID_DIR_ENTRY_P; } =20 /* @@ -1795,7 +1798,11 @@ static const bool vtd_qualified_faults[] =3D { [VTD_FR_ROOT_ENTRY_RSVD] =3D false, [VTD_FR_PAGING_ENTRY_RSVD] =3D true, [VTD_FR_CONTEXT_ENTRY_TT] =3D true, - [VTD_FR_PASID_TABLE_INV] =3D false, + [VTD_FR_PASID_DIR_ACCESS_ERR] =3D false, + [VTD_FR_PASID_DIR_ENTRY_P] =3D true, + [VTD_FR_PASID_TABLE_ACCESS_ERR] =3D false, + [VTD_FR_PASID_ENTRY_P] =3D true, + [VTD_FR_PASID_TABLE_ENTRY_INV] =3D true, [VTD_FR_SM_INTERRUPT_ADDR] =3D true, [VTD_FR_MAX] =3D false, }; --=20 2.34.1