[PATCH] drm/msm: log iommu init failure

[Luca Weiss]

On Fri Jun 21, 2024 at 12:47 AM CEST, Konrad Dybcio wrote:
>
>
> On 6/20/24 20:24, Dmitry Baryshkov wrote:
> > On Thu, 20 Jun 2024 at 20:32, Rob Clark <robdclark at gmail.com> wrote:
> >>
> >> On Thu, May 30, 2024 at 2:48 AM Marc Gonzalez <mgonzalez at freebox.fr> wrote:
> >>>
> >>> On 16/05/2024 10:43, Marijn Suijten wrote:
> >>>
> >>>> On 2024-05-15 17:09:02, Marc Gonzalez wrote:
> >>>>
> >>>>> When create_address_space() fails (e.g. when smmu node is disabled)
> >>
> >> Note that smmu support is going to become a hard dependency with the
> >> drm_gpuvm/VM_BIND conversion.. which I think means we should never get
> >> far enough to hit this error path..
> > 
> > Does that mean that we will lose GPU support on  MSM8974?
>
> Yeah, that was brought up on #freedreno some time ago

Also on MSM8226 which I also care about...

Anyone at all knowledgable on IOMMU would be very welcome to help out
with IOMMU support on these two platforms (and anything else that
old?) in any case, since me and some other people have looked at this
(on and off) for years but haven't gotten to any stable or usable point
unfortunately.

Regards
Luca

>
> Konrad