On Tue, Mar 30, 2021 at 2:34 AM Will Deacon <will@xxxxxxxxxx> wrote: > > On Mon, Mar 29, 2021 at 09:02:50PM -0700, Rob Clark wrote: > > On Mon, Mar 29, 2021 at 7:47 AM Will Deacon <will@xxxxxxxxxx> wrote: > > > > > > On Fri, Mar 26, 2021 at 04:13:02PM -0700, Eric Anholt wrote: > > > > db820c wants to use the qcom smmu path to get HUPCF set (which keeps > > > > the GPU from wedging and then sometimes wedging the kernel after a > > > > page fault), but it doesn't have separate pagetables support yet in > > > > drm/msm so we can't go all the way to the TTBR1 path. > > > > > > What do you mean by "doesn't have separate pagetables support yet"? The > > > compatible string doesn't feel like the right way to determine this. > > > > the compatible string identifies what it is, not what the sw > > limitations are, so in that regard it seems right to me.. > > Well it depends on what "doesn't have separate pagetables support yet" > means. I can't tell if it's a hardware issue, a firmware issue or a driver > issue. Just a driver issue (and the fact that currently we don't have physical access to a device... debugging a5xx per-process-pgtables by pushing untested things to the CI farm is kind of a difficult way to work) BR, -R
