[Intel-gfx] [PATCH v3 1/8] drm/i915: Assert that we don't submit to execlists whilst a preempt is pending

Chris Wilson chris at chris-wilson.co.uk
Tue Jan 24 11:00:02 UTC 2017

To complement the check in execlists_elsp_ready(), also assert that we
don't submit the same context while it has a lite restore still pending.

Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
Reviewed-by: Mika Kuoppala <mika.kuoppala at intel.com>
 drivers/gpu/drm/i915/intel_lrc.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index 32096d141d57..9dd612a2df16 100644
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -375,6 +375,7 @@ static void execlists_submit_ports(struct intel_engine_cs *engine)
 		dev_priv->regs + i915_mmio_reg_offset(RING_ELSP(engine));
 	u64 desc[2];
+	GEM_BUG_ON(port[0].count > 1);
 	if (!port[0].count)

More information about the Intel-gfx mailing list