RE: [discuss] [Patch] X86_64 TASK_SIZE cleanup - more comments

[Alexander Nyberg]

> PPC64 IA64 and S390 use variable size TASK_SIZE for 32 bit and 64 bit
> program.
> I feel it is hard to maintain if we try to audit TASK_SIZE use
> everywhere, because most of them are in generic code.
> 
> And maintaining those audit code in separate place is also a problem.
> E.g. in current 32 bit emulation code
> TASK_SIZE is defined as 0xfffffff in elf loading, but defined as
> 0xffffe000 in mmaping.
> 
> How did that earlier patch break applications?

http://www.ussg.iu.edu/hypermail/linux/kernel/0408.2/1605.html

I never investigated specifically what broke down

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