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Re: A question about allow_unconfined_mmap_low in f11 amd selinux



You're saying you have apps that rely on being able to dereference the
zero page, and _not_ because the processor mode requires it?  I thought
the vax died long ago.

The apps were written intentionally to exploit being able to use page 0.
It's significantly faster (a factor of 10 or more) and simpler (thousands
of lines of code that aren't needed) and easier to use (x<==>y  versus
x<==>(y + k).)  With an identity map the hardware already understands
the app's abstraction.

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