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From: Stefan Richter <>
To: Kyuma Ohta <>
Subject: Re: 2.6.20-rc2: kernel BUG at include/asm/dma-mapping.h:110!
Date: Thu, 18 Jan 2007 21:28:18 +0100	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>

I wrote on 2007-01-02:
> Kyuma Ohta wrote:
> ...
>> Now,I'm testing 2.6.20-rc3 for x86_64, submitted patch for this issue;
>> "Fault has happened  in 'cleanuped' sbp2/1394 module in *not 32bit*
>> architecture hardwares ."
>> As result of, sbp2 driver in 2.6.20-rc3 is seems to running 
>> w/o any faults,but communication both host and harddrive(s) 
>> was seems to be unstable yet :-(
>> Sometimes confuse packets,such as *very* older 1394 driver :-(
> That is, sbp2 on 2.6.20-rc3 works less stable for you than on 2.6.19? Or
> which previous kernel is the basis of your comparison? Are there any log
> messages or other diagnostics? And what hardware do you have?
> If you can tell which kernel was good for you, I could create a set of
> patches for you which allows to revert sbp2 while keeping the rest of
> the kernel at the level of 2.6.20-rc3, so that you could find the
> destabilizing change (if it happened in sbp2, not somewhere else).

So, how about it? Is there an actual regression? If so, we should find
the cause and fix before 2.6.20 is released.

Note, sbp2's optional parameter serialize_io=0 does not work correctly
yet with some devices (it never did), therefore use sbp2 with anything
than default parameters if there are problems.
Stefan Richter
-=====-=-=== ---= =--=-

      parent reply	other threads:[~2007-01-18 20:29 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <>
2006-12-29 21:52 ` Benjamin Herrenschmidt
2006-12-29 22:47   ` Stefan Richter
2006-12-30 12:41     ` Andreas Schwab
     [not found] ` <1167550089.12593.11.camel@melchior>
     [not found]   ` <>
     [not found]     ` <1167708109.12382.26.camel@melchior>
     [not found]       ` <>
2007-01-02 16:31         ` Stefan Richter
2007-01-18 20:28         ` Stefan Richter [this message]

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