While some Linux distributions (Debian, Fedora, etc) put /boot outside of LUKS, the ones using the Calamares installer (EndeavourOS, Spiral, etc) often put /boot inside LUKS/btrfs. The latter layout permits kernel rolebacks via btrfs snapshots, but will use 100% of one core until the kernel is loaded. This is easy to reproduce and observe in KVM.
Is Calamares missing a GRUB configuration or is this a bug?
