From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932668AbcDHMuB (ORCPT ); Fri, 8 Apr 2016 08:50:01 -0400 Received: from mail-bn1on0061.outbound.protection.outlook.com ([157.56.110.61]:26765 "EHLO na01-bn1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751757AbcDHMt6 (ORCPT ); Fri, 8 Apr 2016 08:49:58 -0400 Authentication-Results: redhat.com; dkim=none (message not signed) header.d=none;redhat.com; dmarc=none action=none header.from=amd.com; From: Suravee Suthikulpanit To: , , , , , CC: , , , , Suravee Suthikulpanit Subject: [PART2 RFC v1 0/9] iommu/AMD: Introduce IOMMU AVIC support Date: Fri, 8 Apr 2016 07:49:21 -0500 Message-ID: <1460119770-2896-1-git-send-email-Suravee.Suthikulpanit@amd.com> X-Mailer: git-send-email 1.9.1 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8bit X-Originating-IP: [124.121.8.20] X-ClientProxiedBy: HKNPR06CA0022.apcprd06.prod.outlook.com (10.141.16.12) To SN1PR12MB0446.namprd12.prod.outlook.com (10.162.105.14) X-MS-Office365-Filtering-Correlation-Id: e98177d9-aa78-4b84-8bce-08d35fac48e0 X-Microsoft-Exchange-Diagnostics: 1;SN1PR12MB0446;2:/lG5j6YMfb/bFNoeXGcI4id9NG26k4sa4sMCcbqoN1zIfLKgl9K7dSK9CxnJMeC2HFhD5cOov90iOs3Zv6fCxDntZlMWpyai93TBoTm/zZeQafW2iABjZ5uzXR4+SLaGqrgJzDiiP/jpNI2SL56lHcse/FPA0cfPOQA9shqtsy8b7FckQaZ4aFdizeEz2god;3:CHPyF7DTsZK3UScKWOOMNg52H7/NvKf0yJk2lhI83i5MP2nXsgcArk1tHmwAV3Tvqo/NAVfYjDVVZZ4bhEpXpm35UgIK1W0n0BnGsJSAzqG9l/8pxFv8qa4vpGWl4J5L X-Microsoft-Antispam: UriScan:;BCL:0;PCL:0;RULEID:;SRVR:SN1PR12MB0446; 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In addition to the SVM AVIC, AMD IOMMU also extends the AVIC capability to allow I/O interrupts injection directly into the virtualized guest local APIC without the need for hypervisor intervention. This patch series introduces a new hardware interrupt remapping (IR) mode in AMD IOMMU driver, the Guest Virtual APIC (GA) mode. This is in contrast to the existing "legacy" mode. The IR mode can be specified with a new kernel parameter: amd_iommu_guest_ir=[ ga | legacy(default) ] When enabling GA mode, the AMD IOMMU driver will configure device interrupt remapping in GA mode when possible (i.e. SVM AVIC must be enabled, and if the interrupt types are supported). Otherewise, the driver will fallback to using the legacy IR mode. This patch series also introduces new interfaces between SVM and IOMMU to allow: * SVM driver to communicate to IOMMU with updated vcpu scheduling information. * IOMMU driver to notify SVM driver to schedule vcpu on to physical core handle IOMMU GALog entry. DOCUMENTATIONS ============== More information about SVM AVIC can be found in the AMD64 Architecture Programmer’s Manual Volume 2 - System Programming. http://support.amd.com/TechDocs/24593.pdf More information about IOMMU AVIC can be found int the AMD I/O Virtualization Technology (IOMMU) Specification - Rev 2.62. http://support.amd.com/TechDocs/48882_IOMMU.pdf GITHUB ====== Latest git tree can be found at: http://github.com/ssuthiku/linux.git avic_part2_rfc_v1 Any feedback and comments are very much appreciated. Thank you, Suravee Suravee Suthikulpanit (9): iommu/amd: Detect and enable guest vAPIC support iommu/amd: Add data structure for guest vAPIC support iommu/amd: Detect and initialize guest vAPIC log iommu/amd: Adding GALOG interrupt handler iommu/amd: Introduce amd_iommu_update_ga() iommu/amd: Implements irq_set_vcpu_affinity hook to setup GA mode for pass-through devices svm: Introduce AMD IOMMU avic_ga_log_notifier svm: Implements update_pi_irte hook to setup posted interrupt svm: Update AMD IOMMU IRTE with vcpu scheduling information when enable AVIC arch/x86/include/asm/kvm_host.h | 2 + arch/x86/kvm/svm.c | 212 ++++++++++++++++++- drivers/iommu/amd_iommu.c | 453 +++++++++++++++++++++++++++++++++++----- drivers/iommu/amd_iommu_init.c | 160 +++++++++++++- drivers/iommu/amd_iommu_proto.h | 1 + drivers/iommu/amd_iommu_types.h | 134 ++++++++++++ include/linux/amd-iommu.h | 24 +++ 7 files changed, 923 insertions(+), 63 deletions(-) -- 1.9.1