| 19 Jun 2026 |
 K900 | I'm not sure what the Frame will do but I don't think Adreno even has priority contexts | 15:20:15 |
 Atemu | I used to do the former but recently found out that the latter is feasible these days as Monado has a STEAMVR_LH driver | 15:20:34 |
 magic_rb | (I hope youve time k900, ill need your help for the port, i cant do it by myself) | 15:20:52 |
 ElvishJerricco | what do you mean? I think the only way this affects it is that commands like unshare typically drop the caps, but they don't have to (--keep-caps) | 15:21:02 |
| Atemu | Not for high-prio queues. | 15:21:03 |
| magic_rb | STEAMVR_LH | 15:21:17 |
| K900 | In reply to @atemu12:matrix.org
Not for high-prio queues. Hmm, I'm starting to wonder actually | 15:21:19 |
| K900 | This may work | 15:21:26 |
| magic_rb | * | 15:21:27 |
| Atemu | These things are nasty in theory as they can drown out MM | 15:21:37 |
| K900 | Maybe with an upstreamable kernel patch | 15:21:38 |
| Atemu | Nah, upstream doesn't want any of that | 15:21:57 |
| K900 | But also I'm kinda holding out for Valve to figure something out | 15:22:06 |
| Atemu | They think that even SYS_NICE is too lenient | 15:22:11 |
| K900 | Because in a steamrt3 world they will have the same problem | 15:22:17 |
| ElvishJerricco | what kernel patch is needed there? | 15:22:20 |
| magic_rb | Why? | 15:22:32 |
| K900 | In reply to @elvishjerricco:matrix.org
what kernel patch is needed there? Allowing RT GPU priority with CAP_SYS_NICE from non-root namespaces | 15:22:53 |
| Atemu | They would and have and IIRC they have a way of running the compositor via a proxy that runs in the root NS | 15:22:58 |
| Atemu | Though things may have changed since I last looked at it | 15:23:18 |
| Atemu | Ask smcv if you're really interested | 15:23:29 |
| K900 | So far I've seen a Holo hack to setcap the vrcompositor binary via polkit | 15:23:37 |
| K900 | And that's very ew | 15:23:43 |
| K900 | Actually | 15:23:55 |
| K900 | Real-time portal | 15:24:01 |
| K900 | That could work | 15:24:13 |
| magic_rb | Now im imagining a fps with portal guns (sorry) | 15:24:39 |
| Atemu | It's not RT IIRC; you can actually DOS the entire MM with one of those queues | 15:24:41 |
| K900 | Though doesn't solve the whole "compositor needs to run outside the sandbox" problem | 15:24:42 |
| Atemu | The kernel folks would really rather not expose that to userspace at all IIRC | 15:25:32 |
