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

["Hellstrom, Thomas" <thomas.hellstrom@intel.com>]

Hi, Thomas

On Thu, 2026-02-05 at 03:50 +0000, Sobin Thomas wrote:
> 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(-)

What's the relation to the xe_vm@out-of-memory test? Couldn't we build
on and possibly extend that? (I also have a modification in the pipe to
test this modification:

https://patchwork.freedesktop.org/series/161148/

Thanks,
Thomas