Regression: Kaveri VCE ring test fails

[Zhu, Rex]

Hi Michel,

Thanks. I know the root cause, and will fix this issue today.

Best Regards
Rex

> -----Original Message-----
> From: Michel Dänzer <michel at daenzer.net>
> Sent: Thursday, August 23, 2018 12:31 AM
> To: Zhu, Rex <Rex.Zhu at amd.com>
> Cc: amd-gfx at lists.freedesktop.org
> Subject: Regression: Kaveri VCE ring test fails
> 
> 
> Hi Rex,
> 
> 
> I bisected a regression to your "drm/amd/pp: Unify
> powergate_uvd/vce/mmhub to set_powergating_by_smu" change. Since this
> change, the VCE ring test fails on this Kaveri laptop, which prevents the
> amdgpu driver from initializing at all, see the the attached kern.log.
> 
> If I disable VCE via the ip_block_mask module parameter, I get an oops in
> kv_dpm_get_sclk called from amdkfd, see the attached no-vce.log.
> 
> 
> Since the change above landed for 4.19-rc1, the regression should be fixed
> before the final 4.19 release if at all possible.
> 
> 
> Note that before this change, the VCE IB test has always (as far as I
> remember) failed on this machine, see the attached vce-ib-fail.log. But I don't
> care about that too much, as I don't need VCE, and I haven't noticed any
> other issues related to that.
> 
> 
> P.S. Somebody else bisected a Mullins issue to the same commit:
> https://bugs.freedesktop.org/show_bug.cgi?id=107595
> 
> --
> Earthling Michel Dänzer               |               http://www.amd.com
> Libre software enthusiast             |             Mesa and X developer