kernel
flex
bison
ncurses
https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.12.8.tar.xz
make menuconfig
apk add elfutils-dev libelf git gcc musl-dev linux-headers
cp arch/x86/boot/bzImage .
make menuconfig -> processor type and features -> AMD secure memory enctyption (SME) support / ACTIVATE amd SME by default