No arch/x86_64 folder after compiling kernel

I have compiled a kernel recently and there is not arch/x86_64 folder, there is only the arch/x86.

• I downloaded the kernel 5.4.43 LTS
• make mrproper
• make localmodconfig
• make nconfig
• I made the necessary configurations; saved
• make
• make modules_install

... and there's no arch/x86_64, executing:

Code:getconf LONG_BIT... returns: 64, so I am currently running a 64bit kernel (5.4.42) and uname -m returns x86_64 as well.