powerpc/8xx: Fix regression introduced by cache coherency rewrite
authorRex Feany <RFeany@mrv.com>
Wed, 23 Sep 2009 14:45:52 +0000 (14:45 +0000)
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>
Thu, 24 Sep 2009 05:56:30 +0000 (15:56 +1000)
commite0908085fc2391c85b85fb814ae1df377c8e0dcb
tree46560ab77e41c84ff15c05b5753d7512f8850ba8
parentdaf8f40391b2a1978ea2071c20959d91fade6b1a
powerpc/8xx: Fix regression introduced by cache coherency rewrite

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>
arch/powerpc/mm/pgtable.c