[Intel-xe] [PATCH 0/1] Fix stolen memory size calculation

[Aravind Iddamsetty]

The stolen memory is not being calculated properly, DSMBASE is
considered as stolen base which is wrong. The stolen base should be
either GSMBASE or FLAT_CCS_BASE_ADDR when flat ccs is enabled.

debugfs output showing wrong stolen size as 8MiB while it should be 16MiB:
# cat /sys/kernel/debug/dri/1/stolen_mm
  use_type: 1
  use_tt: 0
  size: 8388608
  usage: 0
default_page_size: 64KiB
visible_avail: 8MiB
visible_size: 8MiB
chunk_size: 64KiB, total: 8MiB, free: 8MiB
order-7 free: 8MiB, pages: 1
order-6 free: 0KiB, pages: 0
order-5 free: 0KiB, pages: 0
order-4 free: 0KiB, pages: 0
order-3 free: 0KiB, pages: 0
order-2 free: 0KiB, pages: 0
order-1 free: 0KiB, pages: 0
order-0 free: 0KiB, pages: 0
man size:8388608

output with this patch:
# cat /sys/kernel/debug/dri/1/stolen_mm
  use_type: 1
  use_tt: 0
  size: 16777216
  usage: 0
default_page_size: 64KiB
visible_avail: 16MiB
visible_size: 16MiB
chunk_size: 64KiB, total: 16MiB, free: 16MiB
order-8 free: 16MiB, pages: 1
order-7 free: 0KiB, pages: 0
order-6 free: 0KiB, pages: 0
order-5 free: 0KiB, pages: 0
order-4 free: 0KiB, pages: 0
order-3 free: 0KiB, pages: 0
order-2 free: 0KiB, pages: 0
order-1 free: 0KiB, pages: 0
order-0 free: 0KiB, pages: 0
man size:16777216

Cc: Matt Roper <matthew.d.roper at intel.com>

Aravind Iddamsetty (1):
  drm/xe: Fix stolen memory size calculation

 drivers/gpu/drm/xe/xe_ttm_stolen_mgr.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

-- 
2.25.1