powerpc/8xx: Fix regression introduced by cache coherency rewrite
commit8bca1d4bb3d6ff6cd35bcb26aa32ceb111e06349
authorRex Feany <RFeany@mrv.com>
Thu, 24 Sep 2009 07:16:54 +0000 (24 17:16 +1000)
committerGreg Kroah-Hartman <gregkh@suse.de>
Mon, 5 Oct 2009 15:28:04 +0000 (5 08:28 -0700)
tree7b504c312eb341a96e74c612d57cafc72b682d8c
parentc7be4a49273fc339f6eb3cf785ef454b723b3d00
powerpc/8xx: Fix regression introduced by cache coherency rewrite

commit e0908085fc2391c85b85fb814ae1df377c8e0dcb upstream.

After upgrading to the latest kernel on my mpc875 userspace started
running incredibly slow (hours to get to a shell, even!).
I tracked it down to commit 8d30c14cab30d405a05f2aaceda1e9ad57800f36,
that patch removed a work-around for the 8xx. Adding it
back makes my problem go away.

Signed-off-by: Rex Feany <rfeany@mrv.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
arch/powerpc/mm/pgtable.c