ARM64: Domain Equivalent support in ARMv8

[Ganapat Rao P Kulkarni]

Hi,

I want to make kernel code ( all sections/blocks mapped to kernel
code) as RO and change to R/W,  when ever hot-patch of kernel code is
required.
Also, R/W access changes should be available/visible to the core which
sets R/W and all other cores continue to have RO access.

This was easily done using Domain feature(by making Kernel Domain as
Manager, using DACR) on ARMv7.
However, on ARMv8, i see there is no domain support(in AARCH64) and
not able to find the alternative optimal way.

please suggest/share, if you have any ideas to do so.

regards,
Ganapat