Commen=
t # 6
on bug 10319=
9
from Martin Peres
(In reply to Chris Wilson from comment #5)
> (In reply to Chris Wilson from comment #4)
> > (In reply to Martin Peres from comment #3)
> > > https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_93/fi-icl-u/
> > > igt@drv_m=
issed_irq.html
> > >=20
> > > (drv_missed_irq:1510) CRITICAL: Test assertion failure funct=
ion
> > > __real_main96, file ../tests/drv_missed_irq.c:159:
> > > (drv_missed_irq:1510) CRITICAL: Failed assertion: missed_rin=
gs =3D=3D
> > > expect_rings
> > > (drv_missed_irq:1510) CRITICAL: Last errno: 9, Bad file desc=
riptor
> > > (drv_missed_irq:1510) CRITICAL: error: 0 !=3D 0x57
> > > Test drv_missed_irq failed.
> >=20
> > icl is a different class of bug -- icl can't fake missed interrup=
ts at all.
>=20
> commit 5f521722a2a2391d693afccdf6e12be2754382d8 (HEAD ->
> drm-intel-next-queued, drm-intel/drm-intel-next-queued)
> Author: Chris Wilson <chris@chris-wilson.co.uk>
> Date: Fri Sep 7 12:28:51 2018 +0100
>=20
> drm/i915: Missed interrupt simulation is no more, tell the world
>=20=20=20=20=20
> Using the guc, we cannot disable the user interrupt generation as =
we use
> it for driving submission. And from Icelake, we no longer have the
> ability to individually mask interrupt generation from each engine,
> disabling our ability to fake missed interrupts.
>=20=20=20=20=20
> In both cases, report back to userspace that the missed interrupt
> generator is no longer available.
>=20=20=20=20=20
> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
> Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
> Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
> Link:
> https://patchwork.freedesktop.org/patch/msgid/20180907112856.282=
42-1-
> chris@chris-wilson=
.co.uk
Do you think it will also fix the ICL bug or should I file another bug?