[Bug 102035] [BAT][CI] kernel BUG at drivers/gpu/drm/i915/intel_lrc.c:880!
bugzilla-daemon at freedesktop.org
bugzilla-daemon at freedesktop.org
Mon Oct 23 14:56:14 UTC 2017
https://bugs.freedesktop.org/show_bug.cgi?id=102035
--- Comment #39 from Chris Wilson <chris at chris-wilson.co.uk> ---
Talking point:
diff --git a/drivers/gpu/drm/i915/intel_lrc.c
b/drivers/gpu/drm/i915/intel_lrc.c
index 6b10a01dd371..f5be85a01f83 100644
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -905,6 +905,8 @@ static void intel_lrc_irq_handler(unsigned long data)
/* After the final element, the hw should be idle */
GEM_BUG_ON(port_count(port) == 0 &&
!(status & GEN8_CTX_STATUS_ACTIVE_IDLE));
+ if (status & GEN8_CTX_STATUS_ACTIVE_IDLE)
+ mdelay(2);
}
if (head != execlists->csb_head) {
prevents the COMPLETED | PREEMPT occurring after the COMPLETED | ACTIVE_IDLE.
(Or just significantly increased the mtbf to mask the issue.)
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