| Message ID | 20191213215614.24558-1-niranjana.vishwanathapura@intel.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | drm/i915/svm: Add SVM support | expand |
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