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| author |   Chris Wilson <chris@chris-wilson.co.uk> | 2020-07-14 12:44:19 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2020-07-15 10:18:29 +0100 |
| commit | 2a19abb006292d741e670ea6be804c3a575676ce (patch) | |
| tree | 7eb87c05293a6c25a4639e44024f83fc7dd85343 /drivers/gpu/drm/i915/gt | |
| parent | drm/i915/gt: Trace placement of timeline HWSP (diff) | |
| download | linux-dev-2a19abb006292d741e670ea6be804c3a575676ce.tar.xz linux-dev-2a19abb006292d741e670ea6be804c3a575676ce.zip | |
drm/i915/gt: Assert the kernel context is using the HWSP
We need to ensure that the kernel context is using the permanently pinned
HWSP so that we can always submit a pm request from any context. By
construction, the engine->kernel_context should only be using the
engine->status_page.vma so let's assert that is still true when we have
to submit a request for parking the engine.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200714114419.28713-1-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/gt')
| -rw-r--r-- | drivers/gpu/drm/i915/gt/intel_engine_pm.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/gt/intel_engine_pm.c b/drivers/gpu/drm/i915/gt/intel_engine_pm.c index d0a1078ef632..8ec3eecf3e39 100644 --- a/drivers/gpu/drm/i915/gt/intel_engine_pm.c +++ b/drivers/gpu/drm/i915/gt/intel_engine_pm.c @@ -142,6 +142,7 @@ static bool switch_to_kernel_context(struct intel_engine_cs *engine) return true; GEM_BUG_ON(!intel_context_is_barrier(ce)); + GEM_BUG_ON(ce->timeline->hwsp_ggtt != engine->status_page.vma); /* Already inside the kernel context, safe to power down. */ if (engine->wakeref_serial == engine->serial) |