15:00 <lina> eric_engestrom: It was actually panfrost, but I just removed that and replaced it with a mention of xe_drm.h when I did the DRM submission because I don't think there's any of the original header left (I pretty much rewrote the entire UAPI with the explicit sync changes)

15:57 <alyssa> lina: "On the other hand, macOS configures things so page faults are ignored

15:57 <alyssa> and silently return all-00 on reads for shader accesses"

15:57 <alyssa> Does it also ignore writes in this case?

15:57 <alyssa> "it's a kernel module param, GPU global and I haven't

15:57 <alyssa> found a way to change it after initial load unfortunately, but it might

15:57 <alyssa> be possible"

15:58 <alyssa> I think that's ok, just means we need a param added to the UAPI `bool page_faults_supported/suppressed/robust/whatever`

15:58 <alyssa> and then based on that mesa can decide whether to

15:58 <alyssa> 1. advertise sparse support

15:59 <alyssa> 2. insert bounds checking code in a bunch of places

16:01 <alyssa> I think that's a reasonable tradeoff. If you boot with the magic kernel modparam, you get a better debug experience at the cost of some performance and no sparse texture support

16:01 <alyssa> Otherwise you don't

18:38 <jannau> lina: I managed to crash the GPU (rtkit crash) with quick sddm - plasma/wayland login/logoff cycles

18:40 <alyssa> womp womp

18:40 <alyssa> jannau: dmesg?

18:41 <jannau> j314c (m1 max), firmware 13.2, kernel https://github.com/jannau/linux/tree/asahi-6.2-1_star_dcp_v13_2 (roughly gpu/explicit-sync + dcp 13.2) and alyssa's agx/release

18:43 <jannau> lina: rtkit crash dump: https://www.jannau.net/asahi/gpu_crash_agx_release_2023-03-9.log

18:44 <jannau> this is on the 13.2 firmware so it might not be a regression

18:53 <jannau> I was trying to reproduce the pink boxes during plasma startup so it didn't crash with 12.3 FW on j493 and j375

19:04 <jannau> no crashes with 12.3 so far, but I ended 2 times with a black desktop. it was flickering 2 or 3 times to black and stayed black then. Could easily be a application bug. desktop and panel were black but mouse pointer was still present and moving

19:05 <jannau> moving to top left corner displayed still the overview effect and pressing on the power button showed the logout screen

19:13 <jannau> reproduce, insofar an application bug as the black screen is the result of a missing plasmashell, not sure why. nothing suspicious in dmesg

19:22 <jannau> so far no crashes on 12.3 and no pink boxes on G13C