[PATCH v4 i-g-t 0/1] tests/intel/xe_evict: overcommit tests for fault-mode and non-fault-mode VMs

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

The existing tests in xe_evict focuses on system-wide memory allocation
across multiple processes. However, OOM error handling in different VM
modes was not being tested, and the previous test_svm_overcommit() had
a critical bug that prevented proper overcommit scenarios.

Add three new tests to verify graceful OOM failure handling:

- test_evict_oom(): Allocates BOs aggressively in a loop until
  OOM occurs. Tests error handling in LR mode and expects
  -ENOSPC or -ENOMEM.

- test_vm_nonfault_mode_overcommit(): Verifies that non-fault mode VMs
  properly reject overcommit attempts with -ENOSPC or -ENOMEM as
  expected.

- test_vm_fault_mode_overcommit(): Validates that fault-mode VMs can
  handle memory pressure gracefully by touching pages to trigger page
  faults.

Signed-off-by: Sobin Thomas <sobin.thomas@intel.com>

Sobin Thomas (1):
  tests/intel/xe_evict: overcommit tests for fault-mode and
    non-fault-mode VMs

 tests/intel/xe_evict.c | 689 ++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 687 insertions(+), 2 deletions(-)

-- 
2.52.0