$ qemu-system-x86_64 -kernel coinboot-vmlinuz-5.15.0-48-generic -initrd coinboot-initramfs-5.15.0-48-generic  -m 4096 -smp 2 -nographic  -serial mon:stdio -append "console=ttyS0 net.ifnames=0 biosdevname=0 break=skip_loading_plugins zram"

[...]

Honoring zram kernel arg
[    4.269253] zram: Added device: zram0
[    4.284727] zstd: Unknown symbol ZSTD_initCCtx (err -2)
[    4.285098] zstd: Unknown symbol ZSTD_getParams (err -2)
[    4.285335] zstd: Unknown symbol ZSTD_CCtxWorkspaceBound (err -2)
[    4.285609] zstd: Unknown symbol ZSTD_compressCCtx (err -2)
modprobe: can't load module zstd (kernel/crypto/zstd.ko): unknown symbol in module, or unknown parameter
[    4.360702] Can't allocate a compression stream
[    4.361164] zram: Cannot initialise zstd compressing backend
sh: write error: Cannot allocate memory