Address space: what's safe?

bradh at bradh at
Fri Mar 7 12:27:15 EST 2003

Quoting Steve Blackburn <Steve.Blackburn at>:
> 5.  Basically, I want to know (preferably ahead of time so constants
>      can be compiled in) is: What is the largest contigious range of
>      virtual memory linux will let, and where is it in the address
>      space?
I don't know the answer, but this problem is probably the same as the one that 
UserMode Linux solves. You could look at that code for insight.
I note that there is a configuration option for a 2G/2G split in UML, which 
indicates that you may not be able to have a single hardwired answer for your 


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