Is it possible to move Kernel Virtual Space to 0xE0000000

Hello PPCTeam,
I would like to know whether I can move kernel virtual space to 0xE0000000
from 0xC0000000, if so can someone suggest me what are the pros and cons, I
know moving kernel is not good idea since Non Linux Standard, but then I
need to expand user space as one of my applications uses huge mmap space.
I tried so far
Giving Kernel virtual space to 0xD0000000 and it boots without any problems,
however when I increase it more to 0xE0000000 it throws Program Exception. I
will be glad if someone helps me out with refernces for Linux Porting on
MPCs.

Regards
Subbu

Giving Kernel virtual space to 0xD0000000 and it boots without any problems,
however when I increase it more to 0xE0000000 it throws Program Exception. I
will be glad if someone helps me out with refernces for Linux Porting on
MPCs.

Search for:
	linux "4G/4G split"
This work was active a couple years ago on x86.  The kernel patches
are not trivial, and they cost about 15% in performance of system calls.
But they do provide almost a full 32-bits of address space for user mode.

The problem of "not enough user address space" also is solvable with
money.  Get a 64-bit machine.  It costs more per board but saves
development time, so costs less in the long run unless you are making
more than 10,000 systems.

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