pkey_alloc on metag

allocate or free a protection key

sys_pkey_alloc(unsigned long flags, unsigned long init_val)
number289 (0x121)
abicommon
familypkeys see the whole family on metag
entry pointsys_pkey_alloc
sinceLinux 4.9
man pagepkey_alloc(2)
sourceelixir.bootlin.com

Registers

registervalue
D1Re0289, the syscall number
D1Ar1unsigned long flags
D0Ar2unsigned long init_val
D0Re0the return value

Then run SWITCH #0x440001 to enter the kernel.

Values wider than one register are packed into consecutive arguments.

This architecture was removed from the Linux kernel in Linux 4.17. The newest release with a syscall table here is Linux 4.16. The other removed architectures live on the historical architectures page.

Same syscall on other architectures

Get this as JSON: https://api.syscall.sh/v2/syscalls/metag/pkey_alloc?kernel=all