From patchwork Fri Nov 22 20:57:21 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Niranjana Vishwanathapura X-Patchwork-Id: 11258413 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id E6597109A for ; Fri, 22 Nov 2019 21:09:07 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id CDBF620708 for ; Fri, 22 Nov 2019 21:09:07 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CDBF620708 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id BBA416F576; Fri, 22 Nov 2019 21:09:01 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) by gabe.freedesktop.org (Postfix) with ESMTPS id 76FA76F573; Fri, 22 Nov 2019 21:09:00 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by orsmga105.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 22 Nov 2019 13:08:59 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.69,231,1571727600"; d="scan'208";a="205575833" Received: from nvishwa1-desk.sc.intel.com ([10.3.160.185]) by fmsmga007.fm.intel.com with ESMTP; 22 Nov 2019 13:08:59 -0800 From: Niranjana Vishwanathapura To: intel-gfx@lists.freedesktop.org Subject: [RFC 00/13] drm/i915/svm: Add SVM support Date: Fri, 22 Nov 2019 12:57:21 -0800 Message-Id: <20191122205734.15925-1-niranjana.vishwanathapura@intel.com> X-Mailer: git-send-email 2.21.0.rc0.32.g243a4c7e27 MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: sanjay.k.kumar@intel.com, sudeep.dutt@intel.com, dri-devel@lists.freedesktop.org, dave.hansen@intel.com, jglisse@redhat.com, jon.bloomfield@intel.com, daniel.vetter@intel.com, dan.j.williams@intel.com, ira.weiny@intel.com, jgg@mellanox.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Shared Virtual Memory (SVM) allows the programmer to use a single virtual address space which will be shared between threads executing on CPUs and GPUs. It abstracts away from the user the location of the backing memory, and hence simplifies the user programming model. SVM supports two types of virtual memory allocation methods. Runtime allocator requires the driver to provide memory allocation and management interface, like buffer object (BO) interface. Whereas system allocator makes use of default OS memory allocation and management support like malloc(). This patch series adds both SVM system and runtime allocator support to i915 driver. The patch series includes - SVM support for both system and runtime allocation. - Plugin in device memory with the Linux kernel. - User API advertising SVM capability and configuration by user on per vm basis. - User API to bind an address range or a BO with a device page table. - User API to migrate an address range to device memory. - Implicit migration by moving pages or BOs back from device to host memory upon CPU access. - CPU copy and blitter copy support for migrating the pages/BOs. - Large page mapping support - Page table dump support. References: https://www.kernel.org/doc/Documentation/vm/hmm.rst The HMM use cases in the Linux kernel. Niranjana Vishwanathapura (12): drm/i915/svm: Add SVM documentation drm/i915/svm: Define SVM UAPI drm/i915/svm: Runtime (RT) allocator support drm/i915/svm: Page table update support for SVM drm/i915/svm: Page table mirroring support drm/i915/svm: Device memory support drm/i915/svm: Implicitly migrate pages upon CPU fault drm/i915/svm: Page copy support during migration drm/i915/svm: Add functions to blitter copy SVM buffers drm/i915/svm: Use blitter copy for migration drm/i915/svm: Add support to en/disable SVM drm/i915/svm: Add page table dump support Venkata Sandeep Dhanalakota (1): drm/i915/svm: Implicitly migrate BOs upon CPU access Documentation/gpu/i915.rst | 29 + drivers/gpu/drm/i915/Kconfig | 23 + drivers/gpu/drm/i915/Kconfig.debug | 14 + drivers/gpu/drm/i915/Makefile | 6 + drivers/gpu/drm/i915/gem/i915_gem_context.c | 95 ++- drivers/gpu/drm/i915/gem/i915_gem_context.h | 2 + .../gpu/drm/i915/gem/i915_gem_context_types.h | 1 + .../gpu/drm/i915/gem/i915_gem_execbuffer.c | 65 +- drivers/gpu/drm/i915/gem/i915_gem_mman.c | 10 + drivers/gpu/drm/i915/gem/i915_gem_object.c | 43 +- drivers/gpu/drm/i915/gem/i915_gem_object.h | 6 + drivers/gpu/drm/i915/gem/i915_gem_svm.c | 51 ++ drivers/gpu/drm/i915/gem/i915_gem_svm.h | 22 + drivers/gpu/drm/i915/gem/i915_gem_wait.c | 2 +- drivers/gpu/drm/i915/i915_buddy.h | 12 + drivers/gpu/drm/i915/i915_drv.c | 30 +- drivers/gpu/drm/i915/i915_drv.h | 32 + drivers/gpu/drm/i915/i915_gem_gtt.c | 158 +++- drivers/gpu/drm/i915/i915_gem_gtt.h | 41 + drivers/gpu/drm/i915/i915_getparam.c | 3 + drivers/gpu/drm/i915/i915_svm.c | 298 +++++++ drivers/gpu/drm/i915/i915_svm.h | 71 ++ drivers/gpu/drm/i915/i915_svm_copy.c | 172 ++++ drivers/gpu/drm/i915/i915_svm_devmem.c | 772 ++++++++++++++++++ drivers/gpu/drm/i915/intel_memory_region.c | 4 - drivers/gpu/drm/i915/intel_memory_region.h | 18 + drivers/gpu/drm/i915/intel_region_lmem.c | 10 + include/uapi/drm/i915_drm.h | 70 ++ 28 files changed, 2024 insertions(+), 36 deletions(-) create mode 100644 drivers/gpu/drm/i915/gem/i915_gem_svm.c create mode 100644 drivers/gpu/drm/i915/gem/i915_gem_svm.h create mode 100644 drivers/gpu/drm/i915/i915_svm.c create mode 100644 drivers/gpu/drm/i915/i915_svm.h create mode 100644 drivers/gpu/drm/i915/i915_svm_copy.c create mode 100644 drivers/gpu/drm/i915/i915_svm_devmem.c