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(parent: fe11dc3) | patch
powerpc/8xx: Tag DAR with 0x00f0 to catch buggy instructions.
authorJoakim Tjernlund <joakim.tjernlund@transmode.se>
Fri, 20 Nov 2009 00:21:04 +0000 (00:21 +0000)
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>
Wed, 9 Dec 2009 06:10:36 +0000 (17:10 +1100)
commit60e071fee994ff98c37d03a4a7c5a3f8b1e3b8e5
tree4b42f796ec84bf1544f4779e5a95713c7253a41dtree | snapshot (tar.gz zip)
parentfe11dc3f9628e5393e932567b7e29d35cbbad136commit | diff
powerpc/8xx: Tag DAR with 0x00f0 to catch buggy instructions.

dcbz, dcbf, dcbi, dcbst and icbi do not set DAR when they
cause a DTLB Error. Dectect this by tagging DAR with 0x00f0
at every exception exit that modifies DAR.
Test for DAR=0x00f0 in DataTLBError and bail
to handle_page_fault().

Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
arch/powerpc/kernel/head_8xx.S diff | blob | blame | history