Date: Tue, 4 Jan 2011 19:10:54 +0000 (UTC) From: Pyun YongHyeon <yongari@FreeBSD.org> To: cvs-src-old@freebsd.org Subject: cvs commit: src/sys/dev/bge if_bge.c Message-ID: <201101041911.p04JBJhg063327@repoman.freebsd.org>
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yongari 2011-01-04 19:10:54 UTC
FreeBSD src repository
Modified files:
sys/dev/bge if_bge.c
Log:
SVN rev 216970 on 2011-01-04 19:10:54Z by yongari
Partially revert change made in r212061. r212061 relied on
bus_dma(9)'s capability which honors boundary restrictions of DMA
tag for dynamic buffers. However it seems this does not work well
and it triggered watchodg timeouts on controller that has the
hardware bug. It's not clear whether there is still another
hardware bug not mentioned in errata. This should be revisited
since this change shall make use of bounce buffers which in turn
reduces performance a lot on systems that have more than 4GB
memory.
Reported by: Michael L. Squires (mikes <> siralan dot org)
Tested by: Michael L. Squires (mikes <> siralan dot org)
MFC after: 3 days
Revision Changes Path
1.336 +8 -1 src/sys/dev/bge/if_bge.c
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