<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - Skylake GPU HANG while gstreamer H264 vaapi encoding from MJPEG vaapi decode on drm-tip" href="https://bugs.freedesktop.org/show_bug.cgi?id=110394#c25">Comment # 25</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - Skylake GPU HANG while gstreamer H264 vaapi encoding from MJPEG vaapi decode on drm-tip" href="https://bugs.freedesktop.org/show_bug.cgi?id=110394">bug 110394</a> from <a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> Chris Wilson</a> <pre>You can try something silly like diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c index 4e0a351bfbca..e5feb0f5a5fe 100644 --- a/drivers/gpu/drm/i915/intel_lrc.c +++ b/drivers/gpu/drm/i915/intel_lrc.c @@ -2115,10 +2115,16 @@ static int gen9_emit_bb_start(struct i915_request *rq, { u32 *cs; - cs = intel_ring_begin(rq, 6); + cs = intel_ring_begin(rq, 12); if (IS_ERR(cs)) return PTR_ERR(cs); + *cs++ = MI_LOAD_REGISTER_IMM(1); + *cs++ = i915_mmio_reg_offset(GEN6_RC_CONTROL); + *cs++ = GEN6_RC_CTL_HW_ENABLE | + GEN6_RC_CTL_RC6_ENABLE | + GEN6_RC_CTL_EI_MODE(1); + *cs++ = MI_ARB_ON_OFF | MI_ARB_ENABLE; *cs++ = MI_BATCH_BUFFER_START_GEN8 | @@ -2129,6 +2135,10 @@ static int gen9_emit_bb_start(struct i915_request *rq, *cs++ = MI_ARB_ON_OFF | MI_ARB_DISABLE; *cs++ = MI_NOOP; + *cs++ = MI_LOAD_REGISTER_IMM(1); + *cs++ = i915_mmio_reg_offset(GEN6_RC_CONTROL); + *cs++ = 0; + intel_ring_advance(rq, cs); return 0; to see if it is just an rc6 event on idling that is the culprit, while keeping rc6 active for the encoder.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are on the CC list for the bug.</li> <li>You are the QA Contact for the bug.</li> <li>You are the assignee for the bug.</li> </ul> </body> </html>