osx and iOS kernel
为每个进程创建page table ,iOS没有
Mach API documentation can be found in the osfmk/man directory of the XNU source package.
Mach IPC: Ports and Messages
vailable system calls are defined in /usr/include/sys/syscall.h.
<key>OSBundleLibraries</key>
<dict>
<key>com.apple.kpi.libkern</key>
<string>13.3.0</string>
</dict>
版本：uname -r 返回核心的版本eg:13.3.0
/System/Library/Extensions
kextload
kextstat
kextunload
kextutil
ioreg
nvram
