[PATCH v6 i-g-t 0/2] tests/intel/xe_vm: Add support for overcommit tests

[Sobin Thomas <sobin.thomas@intel.com>]

Current tests focus on VM creation with basic mode selection and do not
support overcommit scenarios.

This change adds tests to verify overcommit behavior across different VM
modes.

Non-fault mode tests:
 - vram-lr-defer: DEFER_BACKING rejects overcommit at bind time
 - vram-lr-external-nodefer: Long-running mode with external BO and
                             no defer backing
 - vram-no-lr: Non-LR mode

Fault mode tests:
 - vram-lr-fault: Fault handling allows graceful overcommit via page
   faults
 - vram-lr-fault-no-overcommit: Verifies NO_VM_OVERCOMMIT blocks same-VM
   BO eviction during VM_BIND while still allowing eviction during
   pagefault OOM

These tests validate that VMs handle memory pressure appropriately based
on their configuration—rejecting at bind, failing at exec, or handling
it gracefully via page faults.

Currently this is tested for overcommit behaviour for VRAM only.

Sobin Thomas (2):
  drm-uapi/xe: sync with kernel header
  tests/intel/xe_vm: Add support for overcommit tests

 include/drm-uapi/xe_drm.h |  22 +--
 tests/intel/xe_vm.c       | 395 +++++++++++++++++++++++++++++++++++++-
 2 files changed, 405 insertions(+), 12 deletions(-)

-- 
2.52.0