Linux 4.9 syscall changes

Syscall changes in Linux 4.9 compared with 4.8: 4 added, 0 removed.

Added in Linux 4.9

SYSCALLDESCRIPTIONARCHITECTURES AND NUMBERS
arc_usr_cmpxchg - arc 248
pkey_alloc allocate or free a protection key x64 330 x86 381 arm64 289 ia32 381 x32 1073742154 arc 289 hexagon 289 nios2 289 openrisc 289
pkey_free allocate or free a protection key x64 331 x86 382 arm64 290 ia32 382 x32 1073742155 arc 290 hexagon 290 nios2 290 openrisc 290
pkey_mprotect set protection on a region of memory x64 329 x86 380 arm64 288 ia32 380 x32 1073742153 arc 288 hexagon 288 nios2 288 openrisc 288

Same data from the API: https://api.syscall.sh/v2/diff/4.8/4.9