working arm64 RT v5 kernel for RPi3?

kdoren / linux

PREEEMPT_RT builds of linux kernel for Raspberry Pi are posted in "Releases". Patched PREEMPT_RT releases have their own branches. See this repo's wiki for build and installation information.

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working arm64 RT v5 kernel for RPi3? #6

Closed gnulabis closed 3 years ago

gnulabis commented 3 years ago

Hi, just a quick question, have you found any v5 kernel commit + RT patch combination that gives you a working arm64 RT kernel for RPi3? I've been trying several combinations but no luck so far.

Thanks!

kdoren commented 3 years ago

I haven't tried recently, but 5.4 64-bit PREEMPT_RT kernel (under "releases") would not even boot on Pi3. I tried 5.10 32-bit PREEMPT_RT kernel on Pi3 (also under "releases"), and it boots, but hangs in rt_throttling when you run jack audio. So I have been running PREEMPT (low-latency, not _RT) kernel on Pi3.

gnulabis commented 3 years ago

ok, thanks for the feedback

woodz- commented 6 months ago

Is there a deep technical explanation on why it isn't possible to get a 64bit kernel to run on an rpi3 for multiple years?