cvs commit: src/sys/powerpc/powerpc pmap.c
grehan at FreeBSD.org
Sun Nov 6 22:55:49 PST 2005
grehan 2005-11-07 06:55:48 UTC
FreeBSD src repository
Finally (!?) get to the bottom of the mysterious G3 boot-time panics.
After a number of tests using nop's to change the alignment, it was
confirmed that the mtibat instructions should be cache-aligned.
FreeScale app note AN2540 indicates that the isync before and after
the mtdbat is the right thing to do, but sync/isync isn't required
before the mtibat so it has been removed.
Fix by using a ".balign 32" to pull the code in question to the correct
MFC after: 3 days
Revision Changes Path
1.102 +1 -1 src/sys/powerpc/powerpc/pmap.c
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