marcan changed the topic of #asahi to: Asahi Linux: porting Linux to Apple Silicon macs | "Does XXX work yet?": https://alx.sh/fs | GitHub: https://alx.sh/g | Wiki: https://alx.sh/w | Topics: #asahi-dev #asahi-re #asahi-gpu #asahi-alt #asahi-stream #asahi-offtopic | Keep things on topic | Logs: https://alx.sh/l/asahi
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<spuos_>
hey does anyone mind helping me out with the proper way to package a custom kernel? I forget how I bruteforced my way into a packagebuild that compiled, and I am noticing mesa-edge is no longer compatible (built off 6a24102c06c95951ab992e2d41336cc6d4bfdf23)
<spuos_>
long story short I vaguely recall stuffing a bunch of flags on makepkg to ignore warning signs and according to diff I just crammed the commit id in the _commitid= field
<spuos_>
and bumped the version into space
<spuos_>
I mean I still have two other kernels installed but at this point I have actually learned dev stuff in order to make more janky stuff without it breaking
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<rodlnx>
PaulFertser: thank you, Paul! I will go over that!
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<Retr0id>
apple silicon has SEP, right? Is there any way to get it to do something interesting under asahi, or will it only run apple-signed fw or something
<Retr0id>
or maybe it could still do something useful/interesting even with a stock apple fw running
<sven>
it'll only run stock apple fw
<sven>
but we'll be able to use that for stuff like touch id or as an integrated yubikey or for full-disk encryption eventually
<Retr0id>
Has anyone documented research in this direction (I'm just idly curious really)
<sven>
not much
<sven>
there's an old initial tracer plus a python script to boot SEP that I wrote
<sven>
both should be inside m1n1 somewhere
<Retr0id>
ty I'll take a peek
<sven>
it needs access to the xART partition to access a key value store it calls "gigalocker"
<sven>
that file has a constant size and at least on my machines it was contiguous on that hfs partition
<sven>
but we'd e.g. still need code to actually find that offset
<sven>
and after that it's "just" an IPC protocol nested inside another IPC protocol iirc
<sven>
the kexts were reasonably verbose as well
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<knedlik>
Hey guys, just checking, has the 3D-accelerated microvm way of running x86 apps advanced any further in the past ~2 months? What channels can I follow to see when a relevant announcement is made?
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<spuos_>
wait does asahi use 16k by default?
<sven>
yes
<sven>
it has to due to hardware limitations; the iommus only support 16k pages
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<spuos_>
well in that case I wonder what happens if I make my file system write in larger blocks
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<spuos_>
because y'know, they mostly go at max to your page size
<spuos_>
PaulFertser, so it would seem. do they have a reason?
<spuos_>
well, besides making it hard for anyone else to use the fs they formatted
<PaulFertser>
spuos_: it's all in the threads there, sure
<spuos_>
PaulFertser, I hate to say this but I can't believe I read over that part and somehow notice that
<PaulFertser>
spuos_: they mention it's needed to run 4k microVMs
<PaulFertser>
And there was no measurable performance advantage anyway it seems.
<spuos_>
PaulFertser, yeah somehow I missed like half the email lol
<spuos_>
yeah I'd assume the advantage would be on compression related stuff like zfs
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<PaulFertser>
spuos_: there's no shortage of fs benchmarking tools so you're free to experiment and share the results with the community ;)
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<knedlik>
Speaking of 4k and MicroVMs, who and where can I follow to see the progress on that?
<knedlik>
Last time I heard there were works on getting it upstreamed
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<PaulFertser>
knedlik: you mean the work on DRM native context for Asahi? Or libkrun tweaks? Or the pre-packaged container image?
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<knedlik>
Mostly the GPU-accel stuff and the image, but I'd like to keep up to date on the state in general
<knedlik>
About 2 months ago or so, there was basically no way to run x86 apps with 3D acceleration
<PaulFertser>
knedlik: but that's not true, the blog post that talks about how that all fits together was published on 2023-10-06, and it's not like the code involved was pulled away from the public or something.
<knedlik>
Sure, but the kernel was updated and that broke stuff IIRC
<PaulFertser>
Host kernel build broke Mesa?
<knedlik>
The DRM-native context broke
<PaulFertser>
knedlik: so you're building that patched Mesa and it doesn't work with current kernel?
<knedlik>
I built this branch both on the host and the VM and the VM wasn't accelerated
<PaulFertser>
But you also need virglrenderer for that, right?
<knedlik>
I had that installed
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<knedlik>
Huh, now I see that asahi-native-context-v3 has appeared, I was building v2 last time around
<PaulFertser>
Also, your description of the issue doesn't really allow to pinpoint anything. E.g. you do not say what error you got trying to force vm mesa to use virgl by something like LIBGL_ALWAYS_SOFTWARE=1 GALLIUM_DRIVER=virpipe .
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<knedlik>
It was two months ago, I'm trying again now and will report with the results
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<knedlik>
PaulFertser: I get "UABI mismatch: Kernel 10010, Mesa 10009" and then it falls apart (the VM boots but with SW rendering)
<PaulFertser>
knedlik: that's a good descriptive error, means mesa was compiled with different older kernel, so you need to recompile mesa there.
<knedlik>
Actually I forgot to compile it on host... do I need to restart after installing Mesa from source?
<PaulFertser>
I do not think any restart is needed other than userspace that's already running using old mesa.
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<knedlik>
Well, I installed the mesa branch on host, restarted and it's still throwing that error
<PaulFertser>
Probably you're building against old uapi kernel headers, not matching the kernel you're running?
<knedlik>
I'm not sure what you mean, I got everything from fedora repos