Re: 64 bits support
Re: 64 bits support
- Subject: Re: 64 bits support
- From: Scott Thompson <email@hidden>
- Date: Sun, 2 Nov 2003 09:30:40 -0600
I'm not sure what this means; can you clarify? Note, in particular,
that Darwin does *not* have a microkernel architecture - it's a
monolithic kernel.
Darwin is based on the Mach Microkernel which shares and address space
with a BSD-like monolithic kernel. It should be possible, to replace
the Mach VM-descended memory management processes with an alternative
memory handler and that, in theory, might allow you to allocate larger
blocks of memory.
It should be possible... I didn't say it would be practical. :-)
Even if you rewrite the memory handling, I believe (and anyone is
welcome to correct me) but I believe you will still be limited to 56
bits.
The 56-bit thing is a physical capability for some latter-day G4's.
This just allows the system to support more physical memory, and has
no effect on what an individual process can directly access.
Unless, of course, you take control of the segment registers and VM
tables yourself by rewriting the memory subsystem.
Scott
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