Fix NULL pointer constant issues in kernel/arch/x86
tree8676bc417f634bc108cf598957af838f482a9417
-rw-r--r-- 727 .gitignore
-rw-r--r-- 1979 FEATURES.txt
-rw-r--r-- 665 Makefile
-rw-r--r-- 3641 README.md
-rw-r--r-- 1699 README.uname
-rw-r--r-- 212 Sconfig
drwxr-xr-x - bin
drwxr-xr-x - contrib
drwxr-xr-x - docs
drwxr-xr-x - exception_lists
drwxr-xr-x - include
drwxr-xr-x - kernel
drwxr-xr-x - lib
drwxr-xr-x - share
drwxr-xr-x - tools
drwxr-xr-x - usr