Re: [PATCH] ARM: VIPT cache coherency fix

To: Imre Deak <imre.deak%teleca.com@localhost>
Subject: Re: [PATCH] ARM: VIPT cache coherency fix
From: Matt Thomas <matt%3am-software.com@localhost>
Date: Wed, 6 Aug 2008 15:48:22 -0700


On Aug 6, 2008, at 2:55 AM, Imre Deak wrote:

Currently page loaning (at least) is broken on ARM VIPT platforms.

The reason is that possible dirty cache lines are not taken intoaccount

at the moment, following is a fix for this.

The fix is validated against the latest breakage related to the socket
page loaning reported earlier on the list.


This is close to what I checked in but actually has a few missing corner
cases.  The version I checked works for the always failing
scp sdp:/lib/libc.so .

Adding KASSERT's for PVF_DIRTY helped me track down the last bug inmy code.

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