[DragonFlyBSD - Submit #2299] Prevent mapping to page 0 on pc32

[Loganaden Velvindron via Redmine]

Issue #2299 has been reported by Loganaden Velvindron.

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Submit #2299: Prevent mapping to page 0 on pc32
http://bugs.dragonflybsd.org/issues/2299

Author: Loganaden Velvindron
Status: New
Priority: Normal
Assignee: 
Category: 
Target version: 


OpenBSD prevents mapping to page 0 to prevent certain
class of exploits.

It has been reported that it can break Wine.

I tested it on pc32.

Feedback welcomed.


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