Messages in this thread | | | Date | Mon, 19 Apr 1999 00:04:58 +0200 | From | Bernd Paysan <> | Subject | Re: Configurable larger physical memory |
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Mitchell Blank Jr wrote: > No, I there's another problem of people setting it as high as they > possibly can ("hey, I might put 3G of ram in here someday...") without > realizing that there are tradeoffs and they probably want the default. > I think the question should be phrased as "Limit userspace memory to..." > instead of "Maximum physical memory..." for this reason.
Hm, no, that doesn't make sense. Who would limit userspace memory? Perhaps "Physical RAM/Userspace tradeoff" would be more appropriate, and select
1GB RAM/3GB Userspace 2GB RAM/2GB Userspace 3GB RAM/1GB Userspace 4GB RAM/192MB Userspace
or something like that, and there certainly has to be documentation. BTW: Is it really still necessary for the kernel to access all the phyiscal RAM? I understand that it has to access memory mapped IO, and it's own address space, but the rest? I can't see such a design in the 68k architecture specific part, or am I just missing something?
-- Bernd Paysan "If you want it done right, you have to do it yourself" http://www.jwdt.com/~paysan/
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