Without this patch, user-level programs have the ability to
map in the core-local interrupt controller on RISC-V platforms
which contains the memory-mapped registers for the core-local
timer the kernel uses. This is a level of privilege that
user-level programs should not have. Writing to the `mtime`
register is possible which can then affect the timer interrupts
are delivered to the kernel.
Signed-off-by: Ivan-Velickovic <i.velickovic@unsw.edu.au>
2730e65796