Re: [PULL] topic/i915-ttm

[Joonas Lahtinen <joonas.lahtinen@linux.intel.com>]

Quoting Maarten Lankhorst (2021-06-11 12:27:15)
> Pull request for drm-misc-next and drm-intel-gt-next.
> 
> topic/i915-ttm-2021-06-11:
> drm-misc and drm-intel pull request for topic/i915-ttm:
> - Convert i915 lmem handling to ttm.
> - Add a patch to temporarily add a driver_private member to vma_node.
> - Use this to allow mixed object mmap handling for i915.
> The following changes since commit 1bd8a7dc28c1c410f1ceefae1f2a97c06d1a67c2:
> 
>   Merge tag 'exynos-drm-next-for-v5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos into drm-next (2021-06-11 14:19:12 +1000)

This base is not in drm-misc-next or drm-intel-gt-next, so effectively
we would end up pulling 478 extra commits from drm-next as a result. And
also causing all the warnings for those commits. I don't think we should
do that?

The common ancestor would be ccd1950c2f7e38ae45aeefb99a08b39407cd6c63
"Merge tag 'drm-intel-gt-next-2021-05-28' of git://anongit.freedesktop.org/drm/drm-intel into drm-next"
Should we re-do the topic branch based on that?

However the DIM docs[1] indeed do say: "For topic branches shared within
the gpu/drm subsystem, base it on the latest drm-next branch." I think
the docs don't take into account the current period where drm-next is
being actively updated as we speak.

Should we update the docs to use 'git merge-base' or something else?

Regards, Joonas

[1]: https://drm.pages.freedesktop.org/maintainer-tools/dim.html#cross-subsystem-topic-branches

> 
> are available in the Git repository at:
> 
>   git://anongit.freedesktop.org/drm/drm-misc tags/topic/i915-ttm-2021-06-11
> 
> for you to fetch changes up to cf3e3e86d77970211e0983130e896ae242601003:
> 
>   drm/i915: Use ttm mmap handling for ttm bo's. (2021-06-11 10:53:25 +0200)
> 
> ----------------------------------------------------------------
> drm-misc and drm-intel pull request for topic/i915-ttm:
> - Convert i915 lmem handling to ttm.
> - Add a patch to temporarily add a driver_private member to vma_node.
> - Use this to allow mixed object mmap handling for i915.
> 
> ----------------------------------------------------------------
> Maarten Lankhorst (2):
>       drm/vma: Add a driver_private member to vma_node.
>       drm/i915: Use ttm mmap handling for ttm bo's.
> 
> Thomas Hellström (2):
>       drm/i915/ttm: Introduce a TTM i915 gem object backend
>       drm/i915/lmem: Verify checks for lmem residency
> 
>  drivers/gpu/drm/drm_gem.c                          |   9 -
>  drivers/gpu/drm/i915/Makefile                      |   1 +
>  drivers/gpu/drm/i915/display/intel_display.c       |   2 +-
>  drivers/gpu/drm/i915/gem/i915_gem_create.c         |   9 +-
>  drivers/gpu/drm/i915/gem/i915_gem_lmem.c           | 126 ++--
>  drivers/gpu/drm/i915/gem/i915_gem_lmem.h           |   5 -
>  drivers/gpu/drm/i915/gem/i915_gem_mman.c           |  83 ++-
>  drivers/gpu/drm/i915/gem/i915_gem_object.c         | 143 +++--
>  drivers/gpu/drm/i915/gem/i915_gem_object.h         |  19 +-
>  drivers/gpu/drm/i915/gem/i915_gem_object_types.h   |  30 +-
>  drivers/gpu/drm/i915/gem/i915_gem_pages.c          |   3 +-
>  drivers/gpu/drm/i915/gem/i915_gem_region.c         |   6 +-
>  drivers/gpu/drm/i915/gem/i915_gem_ttm.c            | 647 +++++++++++++++++++++
>  drivers/gpu/drm/i915/gem/i915_gem_ttm.h            |  48 ++
>  drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c |  90 +--
>  drivers/gpu/drm/i915/gt/intel_region_lmem.c        |   3 +-
>  drivers/gpu/drm/i915/i915_gem.c                    |   5 +-
>  drivers/gpu/drm/i915/intel_memory_region.c         |   1 -
>  drivers/gpu/drm/i915/intel_memory_region.h         |   1 -
>  drivers/gpu/drm/i915/intel_region_ttm.c            |   8 +-
>  drivers/gpu/drm/i915/intel_region_ttm.h            |  11 +-
>  drivers/gpu/drm/i915/selftests/igt_mmap.c          |  25 +-
>  drivers/gpu/drm/i915/selftests/igt_mmap.h          |  12 +-
>  include/drm/drm_vma_manager.h                      |   2 +-
>  24 files changed, 1039 insertions(+), 250 deletions(-)
>  create mode 100644 drivers/gpu/drm/i915/gem/i915_gem_ttm.c
>  create mode 100644 drivers/gpu/drm/i915/gem/i915_gem_ttm.h