Re: [PATCH 00/21] huge gtt pages

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Quoting Matthew Auld (2017-10-05 16:18:54)
> Some more bits of polish, just missing R-b's on patches 6 and 11.
> 
> 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_sizes field to dev_info
>   drm/i915: push set_pages down to the callers
>   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 pages
>   drm/i915: support 2M pages for the 48b PPGTT
>   drm/i915: add support for 64K scratch page
>   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

Hmm, I really would like a GETPARAM to retrieve
INTEL_INFO()->info.page_sizes. That will be useful to expose the change
for testing, and for Vk to allocate its memfd correctly.
-Chris
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