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From: "Paul A. Clayton" <paaronclayton@gmail.com>
Newsgroups: comp.arch
Subject: Re: C and turtles, 80286 protected mode
Date: Sun, 20 Oct 2024 12:14:05 -0400
Organization: A noiseless patient Spider
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On 10/20/24 3:07 AM, Lawrence D'Oliveiro wrote:
> On Wed, 16 Oct 2024 15:07:14 -0400, Paul A. Clayton wrote:
> 
>> Obviously, this would not be portable, but sbrk() and mmap() are not
>> portable.
> 
> They are portable at the OS level, since they are part of POSIX.

I think my (theoretical) proposal of "an implicit
mmap(MAP_ANONYMOUS | MAP_FIXED) on a page fault" would be portable
at the OS level, though "portable to some obscure research OS" — 
if such was every developed — could be reasonable argued as less
portable than "portable to POSIX".☺

(I do think such is an _interesting_ interface.)