00:59 <hanetzer> if I could get petitboot working as a coreboot payload it would be rather interesting if I could cook a minimal uImage which supports all the gru based chromebooks

01:16 <alyssa> hanetzer: #linux-rockchip please ..

01:30 <hanetzer> fair. though, does anyone here have any non-kevin gru chromebooks who can test stuff for it?

04:30 <tomeu> milloni, TheCycoONE: I think robertfoss has ran panfrost on a rockpi4

04:54 <tomeu> alyssa: do you have an opinion on what should be the initial subset of tests to run?

04:55 <tomeu> otherwise I'm going to try running all of them at first, then start pruning the ones that cause hangs

14:32 <alyssa> tomeu: No opinions here (I know -- a first for me) :)

14:42 <alyssa> tomeu: I am a little concerned about results being meaningful, given we're not nearly conformant right now

14:42 <alyssa> I.e. it'll look like all commits fail, which doesn't tell us anything about regressions (or lack thereof)

14:50 <alyssa> 17,433 functional tests in total, huh

17:09 <alyssa> Got a trace of register spilling. Now the fun begins :p

17:17 <alyssa> Semantics are still not obvious, I'm guessing we're missing some detail for whatever reason. Keep poking..

17:22 <alyssa> Ah, I have a hunch what might be going on. Need to modify the disassembler to confirm it.

17:23 <alyssa> Also pandecode. Seriously, does all of our infrastructure have bugs?

17:23 <alyssa> ("Didn't you write both of the relevant pieces of code?" "...Mmyes..")

19:35 <alyssa> A thought -- the only field I see changing in the cmdstream (there may be others we're not dumping, of course) is not in the shader descriptor at all, but in the framebuffer descriptor

19:35 <alyssa> Given the layout of both descriptors, it actually... seems more likely the spill memory is in the framebuffer descriptor for whatever reason

19:36 <alyssa> There are a lot of random chunks of memory tossed around in the FBD -- might one of them be for spilled memory?

19:37 <alyssa> If that's the case, though, I'm not sure why we need to allocate them for shaders that don't spill.

23:09 <alyssa> tomeu: What's the status with devfreq on Panfrost?

23:10 <alyssa> I'm on kind of an old kernel version, but rn I'm ending up at low frequencies a lot of the time and it's a little annoying.. If I try to force performance governor, the kernel crashes..

23:22 <alyssa> Sweet! common_functions is now up to 400/400 passed.

23:22 <alyssa> Running the clipping tests for the first time since there are a bunch.. looking good though.. :)

23:23 <alyssa> 602/602 there. Sweet!

23:23 <alyssa> Really should fix those crashing/hanging/etc tests so we can do a full run and figure out where we are there :p

23:42 <alyssa> Next up, indirect loads/stores

23:42 <alyssa> This will be... interesting

23:43 <alyssa> I think more broadly giving attention to load/store ops in shaders is a good place to be at right now

23:43 <alyssa> (Ties into register spilling stuff as well)

23:45 <alyssa> It looks like indirect varying loads are accomplished by normal varying ops

23:45 <alyssa> The index is in r27.w

23:46 <alyssa> The magic paramemter being 0x79E

23:46 <alyssa> Let's get that working, shall we?

23:46 <alyssa> ("Why do you use IRC like Twitter?" "Why not?")