[PATCH i-g-t 0/2] Extend core_hotunplug coverage with open-handles unbind/rebind scenario

[Marcin Bernatowicz <marcin.bernatowicz@linux.intel.com>]

This series extends core_hotunplug coverage with a child-process
open-handles unbind/rebind scenario, and updates dummyload spin-start
helpers so the test flow works correctly on both i915 and Xe.

Patch 1 updates igt_spin_has_started() and
igt_spin_busywait_until_started() so Xe-backed runs use xe-specific spin
start detection.

Patch 2 adds exec-fork-unbind-rebind, which starts spinner work in a
child process, ends execution while intentionally keeping child-side GPU
handles alive, then verifies parent-side driver unbind/rebind succeeds.

Marcin Bernatowicz (2):
  lib/igt_dummyload: Adapt helpers for Xe
  tests/core_hotunplug: Add exec-fork-unbind-rebind subtest

 lib/igt_dummyload.c    | 14 ++++++
 lib/igt_dummyload.h    | 11 +----
 tests/core_hotunplug.c | 98 ++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 114 insertions(+), 9 deletions(-)

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2.43.0