Messages in this thread | | | Date | Thu, 10 Jan 2008 23:46:47 -0600 | From | Robert Hancock <> | Subject | Re: PROBLEM REMAINS: [sata_nv ADMA breaks ATAPI] Crash on accessing DVD-RAM |
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Alexander wrote: > Hello! > > The problem described at https://bugzilla.redhat.com/show_bug.cgi?id=351451 and > at http://ubuntuforums.org/showthread.php?t=655772 and supposedly fixed by the > patch http://kerneltrap.org/mailarchive/linux-kernel/2007/11/25/445094 is still > there. I have compiled 2.6.24-rc7 kernel and booted my PC with it just to find > out that my SATA DVD-RW is
There's this patch which was intended to fix it:
http://lkml.org/lkml/2007/11/22/148
which hasn't been merged yet. I see now that there was some further discussion from someone saying that didn't fix the problem for them, which I wasn't CCed on.. It looks like in their case, libata is receiving SGs with DMA addresses above 4GB even though the block layer bounce limit is set to 32-bit. That's the mechanism that sata_nv depends on to ensure that it gets proper addresses when accessing ATAPI devices where it is limited to 32-bit DMA.. Could that be breaking or insufficient somehow?
-- Robert Hancock Saskatoon, SK, Canada To email, remove "nospam" from hancockr@nospamshaw.ca Home Page: http://www.roberthancock.com/
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