[PATCH] drm/msm/a6xx+: Insert a fence wait before SMMU table update

[Akhil P Oommen]

On Tue, Sep 17, 2024 at 03:47:09PM +0200, Konrad Dybcio wrote:
> On 13.09.2024 9:51 PM, Rob Clark wrote:
> > From: Rob Clark <robdclark at chromium.org>
> > 
> > The CP_SMMU_TABLE_UPDATE _should_ be waiting for idle, but on some
> > devices (x1-85, possibly others), it seems to pass that barrier while
> > there are still things in the event completion FIFO waiting to be
> > written back to memory.
> 
> Can we try to force-fault around here on other GPUs and perhaps
> limit this workaround?
> 
> Akhil, do we have any insight on this?

Nothing at the moment. I will check this further.

-Akhil.

> 
> Konrad