On flat-ccs capable platform we need to evict and resore the ccs data along with the corresponding main memory. This ccs data can only be access through BLT engine through a special cmd ( ) To support above requirement of flat-ccs enabled i915 platforms this series adds new param called ccs_pages_needed to the ttm_tt_init(), to increase the ttm_tt->num_pages of system memory when the obj has the lmem placement possibility. This will be on top of the flat-ccs enabling series https://patchwork.freedesktop.org/series/95686/ For more about flat-ccs feature please have a look at https://patchwork.freedesktop.org/patch/471777/?series=95686&rev=5 Testing of the series is WIP and looking forward for the early review on the amendment to ttm_tt_init and the approach. Ramalingam C (2): drm/i915/ttm: Add extra pages for handling ccs data drm/i915/migrate: Evict and restore the ccs data drivers/gpu/drm/drm_gem_vram_helper.c | 2 +- drivers/gpu/drm/i915/gem/i915_gem_ttm.c | 23 +- drivers/gpu/drm/i915/gt/intel_migrate.c | 283 +++++++++++---------- drivers/gpu/drm/qxl/qxl_ttm.c | 2 +- drivers/gpu/drm/ttm/ttm_agp_backend.c | 2 +- drivers/gpu/drm/ttm/ttm_tt.c | 12 +- drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c | 2 +- include/drm/ttm/ttm_tt.h | 4 +- 8 files changed, 191 insertions(+), 139 deletions(-) -- 2.20.1
