From mboxrd@z Thu Jan  1 00:00:00 1970
Date: Tue, 25 Mar 2003 18:17:11 -0800
From: Till Straumann <strauman@SLAC.Stanford.EDU>
Subject: Re: dcbz works on 862 everywhere!
To: joakim.tjernlund@lumentis.se
Cc: Dan Malek <dan@embeddededge.com>,
	Tom Rini <trini@kernel.crashing.org>,
	"Linuxppc-Embedded@Lists. Linuxppc. Org" <linuxppc-embedded@lists.linuxppc.org>
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Hi guys.

I revitalized my old test environment on a
mpc860t (XPC860TZP50B5 / 3J21M to be precise).

I found that 'dcbz' (while failing to set DAR)
indeed sets MD_EPN correctly. Hence, Jocke's fix
(copy EPN[0:19]->DAR) would handle that.

My older idea (fixing up MD_EPN and DAR based
on the faulting instruction opcode and the involved
GPR contents) should work even if we have neither
a valid MD_EPN nor DAR.

-- Till.


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