Hello debian-arm, A while ago, I saw a message on debian-devel regarding PAC on ARM in Debian. It caught my interest since I maintain a package (storm-lang) that contains a JIT-compiler and garbage collector that will be affected by the introduction of PAC in subtle ways.
I have made some patches that I *think* addresses these issues, but I am currently unable to test them as I lack hardware with PAC support (I have previously tested on a Raspberry Pi 4, but the SOC lacks PAC). As such, I am reaching out for advice regarding suitable ways of verifying that my changes are correct. At the time I have two ideas: 1. Use something like a QEMU chroot on an amd64 machine. As far as I understand QEMU supports the PAC instruction if configured correctly. Ideally it would be possible to use QEMU:s user-mode emulation to avoid the hassle of setting up a "real" virtual machine. I have seen messages about something similar on debian-devel, but I fail to find instructions on how to set it up in a convenient way. There is certainly good documentation somewhere, if someone could point me in the right direction it would be greatly appreciated! 2. Find some comparatively cheap hardware with PAC support (e.g. a single-board computer). Sadly, it is usually unclear whether the SOC supports PAC or not. So far I have only found "high-end" chips (like Snapdragon) with proper support, and those don't seem to be used in what I imagine. Since the freeze is relatively near, for the time being I have disabled PAC for this package. So there is no rush for me to get this fixed properly before the freeze. Thank you for your advice! Regards, Filip Strömbäck
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