Re: patch: PMAP_CANFAIL corrections

[Matt Thomas <matt%3am-software.com@localhost>]

On May 13, 2010, at 10:57 AM, Christoph Egger wrote:

> 
> Hi!
> 
> Attached patch corrects use of PMAP_CANFAIL to not be or'd
> with protection. Pass protection to the protection parameter
> of pmap_enter instead.
> 
> Any comments?

Completely wrong. :)

Th protection passed in flags is used as a hint for a pmap to initialize the 
modified/referenced state of page.  This allows the system to skit unneeded 
faults to mark a page as modified.