Re: PROBLEM: Linux 2.6.0-test11 only lets me use 1GB out of 2GB ram.

Martin J. Bligh
2003-12-11T07:23:36Z

>>> You're probably thinking of 2:2 split patches.
>>> 2:2 splits are at least technically ABI violations, which is probably
>>> why this isn't merged etc. Applications sensitive to it are uncommon.
>>> Yes, the SVR4 i386 ELF/ABI spec literally mandates 0xC0000000 as the
>>> top of the process address space.
>
> On Wed, Dec 10, 2003 at 11:08:38PM -0800, Martin J. Bligh wrote:
>> You mean like we place the stack in the "ABI compliant place"?
>> Yeah, right ;-)
>
> No specific address is ever cited as a requirement for stack placement;
> stack immediately below text is merely given as a "typical arrangement".
> i.e. "Although applications may control their memory assignments, the
> typical arrangement appears below: [diagram and other bits]" It then
> goes on to say, "Processes, therefore, shount _not_ depend on finding
> their stack at a particular virtual address."
>
> The process address space boundary is, however, stated as a requirement:
> "the reserved area shall not consume more than 1GB of the address space."

;-)

OK, fair enough ... it doesn't actually break anything though ;-)

m.