Date: Mon, 7 Nov 2005 06:55:48 +0000 (UTC) From: Peter Grehan <grehan@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/powerpc/powerpc pmap.c Message-ID: <200511070655.jA76tmVJ060659@repoman.freebsd.org>
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grehan 2005-11-07 06:55:48 UTC
FreeBSD src repository
Modified files:
sys/powerpc/powerpc pmap.c
Log:
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
alignment.
MFC after: 3 days
Revision Changes Path
1.102 +1 -1 src/sys/powerpc/powerpc/pmap.c
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