[Intel-gfx] [PATCH 00/21] huge gtt pages

[Chris Wilson]

Quoting Matthew Auld (2017-07-25 20:21:12)
> Some updates to the kselftests as per Chris' comments.
> 
> Matthew Auld (21):
>   mm/shmem: introduce shmem_file_setup_with_mnt
>   drm/i915: introduce simple gemfs
>   drm/i915/gemfs: enable THP
>   drm/i915: introduce page_size_mask to dev_info
>   drm/i915: introduce page_size members
>   drm/i915: introduce vm set_pages/clear_pages
>   drm/i915: align the vma start to the largest gtt page size
>   drm/i915: align 64K objects to 2M
>   drm/i915: enable IPS bit for 64K pages
>   drm/i915: disable GTT cache for 2M/1G pages
>   drm/i915: support 1G pages for the 48b PPGTT
>   drm/i915: support 2M pages for the 48b PPGTT
>   drm/i915: support 64K pages for the 48b PPGTT
>   drm/i915: accurate page size tracking for the ppgtt
>   drm/i915/debugfs: include some gtt page size metrics
>   drm/i915/selftests: huge page tests
>   drm/i915/selftests: mix huge pages
>   drm/i915: disable platform support for vGPU huge gtt pages
>   drm/i915: enable platform support for 64K pages
>   drm/i915: enable platform support for 2M pages
>   drm/i915: enable platform support for 1G pages

memfd is about to gain the ability to create huge pages as well, and
that is being used by anv to allocate userptr objects (in pieces) so if
we want to tie those two together we also need a I915_GETPARAM to report
the i915->info.page_sizes;

For debugging purposes, I'm contemplating a
i915_gem_object_getparam_ioctl.
-Chris