svn commit: r205377 - stable/8/sys/powerpc/aim

[Nathan Whitehorn]

Nathan Whitehorn wrote:
> Author: nwhitehorn
> Date: Sat Mar 20 15:05:44 2010
> New Revision: 205377
> URL: http://svn.freebsd.org/changeset/base/205377
>
> Log:
>   Fix a bug where pages being removed from memory entirely no longer have
>   PVOs, and so the modified state of the page can no longer be communicated
>   to the VM layer, causing pages not to be flushed to swap when needed, in
>   turn causing memory corruption. Also make several correctness adjustments
>   to I-Cache synchronization and TLB invalidation for 64-bit Book-S CPUs.
>   
This was an MFC of r204042.
-Nathan