Hello
I have tested vmlinux-6.16_alpha3.
I have formatted a usb disk and then copied vmlinux-6.16_alpha2 and vmlinux-6.16_alpha3 to the disk.
Then checked the file system on the disk for errors ( result : no errors) .
I have then tested several systems e.g. Ubuntu 18 .mintppc 64 ,mintppc 32 , Debian 64 , Debian 32 , Chimera 32 . Alpha2 boot on all system , Alpha3 got kernel panic on all system. (cant mount root system)
Sorry but I skip Alpha3 and hope it goes better with alpha4.
Have a nice day