From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1182DC2D0CE for ; Fri, 24 Jan 2020 08:53:32 +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 E2F3920709 for ; Fri, 24 Jan 2020 08:53:31 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E2F3920709 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=intel-gfx-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 8477B6FF93; Fri, 24 Jan 2020 08:53:31 +0000 (UTC) Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by gabe.freedesktop.org (Postfix) with ESMTPS id 5105F6FF93; Fri, 24 Jan 2020 08:53:30 +0000 (UTC) X-Amp-Result: UNKNOWN X-Amp-Original-Verdict: FILE UNKNOWN X-Amp-File-Uploaded: False Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga104.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 24 Jan 2020 00:53:29 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.70,357,1574150400"; d="scan'208";a="291577401" Received: from nvishwa1-desk.sc.intel.com ([10.3.160.185]) by fmsmga001.fm.intel.com with ESMTP; 24 Jan 2020 00:53:29 -0800 Date: Fri, 24 Jan 2020 00:42:44 -0800 From: Niranjana Vishwanathapura To: intel-gfx@lists.freedesktop.org Message-ID: <20200124084244.GD4253@nvishwa1-DESK.sc.intel.com> References: <20191213215614.24558-1-niranjana.vishwanathapura@intel.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20191213215614.24558-1-niranjana.vishwanathapura@intel.com> User-Agent: Mutt/1.5.24 (2015-08-30) Subject: Re: [Intel-gfx] [RFC v2 00/12] drm/i915/svm: Add SVM support X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kenneth.w.graunke@intel.com, sanjay.k.kumar@intel.com, dri-devel@lists.freedesktop.org, jason.ekstrand@intel.com, dave.hansen@intel.com, jglisse@redhat.com, daniel.vetter@intel.com, dan.j.williams@intel.com, ira.weiny@intel.com, jgg@mellanox.com Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" On Fri, Dec 13, 2019 at 01:56:02PM -0800, Niranjana Vishwanathapura wrote: >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. > I will split runtime allocator and system allocator support into separate RFC series. I will prioritize runtime allocator support to address the feedback in patch [02] of this series. Thanks, Niranjana >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 prefetch 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. >Test RFC series > "[RFC i-g-t 0/7] tests/i915/svm: Shared Virtual Memory (SVM) test" > >v2: >- Use updated HMM API >- HMM usage changes as per review feedback >- UAPI name change as per review feedback >- Reformat RFC series >- Some minor fixes > >Niranjana Vishwanathapura (11): > drm/i915/svm: Add SVM documentation > 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 | 60 ++ > 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 | 31 +- > 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 | 330 ++++++++ > 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 | 781 ++++++++++++++++++ > 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 | 73 ++ > 28 files changed, 2078 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 > >-- >2.21.0.rc0.32.g243a4c7e27 > >_______________________________________________ >dri-devel mailing list >dri-devel@lists.freedesktop.org >https://lists.freedesktop.org/mailman/listinfo/dri-devel _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx