i am building a kernel based fast packet handler which runs on kernel
my code resides inside the kernel, which is running on sb1 core.
i need to allocate a large memory region for my data (32MB), which is far
beyond what kmalloc can provide for me.
i do not want to use vmalloc, since it will allocate the memory out of
KSEG2, which is too slow and will generate too many exceptions when i
have to access my data randomly.
i was thinking of limiting the linux from accessing the highest physical
32MB by using "mem=224M" kernel command line parameter. this was i
can access my data using 0x8e000000 through KSEG1.
is this safe ? anything i need to consider before moving forward with that