drm/i915/selftests: Check for has-reset before testing hostile contexts

In order to kill off a hostile context, we need to be able to reset the
GPU. So check that is supported prior to beginning the test.

Reported-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200402205839.25065-1-chris@chris-wilson.co.uk

diff --git a/drivers/gpu/drm/i915/gt/selftest_lrc.c b/drivers/gpu/drm/i915/gt/selftest_lrc.c
index f3ba588..985d404 100644 (file)
--- a/drivers/gpu/drm/i915/gt/selftest_lrc.c
+++ b/drivers/gpu/drm/i915/gt/selftest_lrc.c
@@ -2046,6 +2046,9 @@ static int __cancel_hostile(struct live_preempt_cancel *arg)
        if (!IS_ACTIVE(CONFIG_DRM_I915_PREEMPT_TIMEOUT))
                return 0;
 
+       if (!intel_has_reset_engine(arg->engine->gt))
+               return 0;
+
        GEM_TRACE("%s(%s)\n", __func__, arg->engine->name);
        rq = spinner_create_request(&arg->a.spin,
                                    arg->a.ctx, arg->engine,