64bit DMA in i2o_block [message #6768] |
Fri, 22 September 2006 09:10 |
vaverin
Messages: 708 Registered: September 2005
|
Senior Member |
|
|
Markus,
I've found that your driver does not work correctly with following options:
CONFIG_I2O_EXT_ADAPTEC=y
# CONFIG_I2O_EXT_ADAPTEC_DMA64 is not set
I've checked it on 2.6.18 kernel on x86_64 node with 4Gb memory.
I would note that I've not noticed any bugs on x86 kernels, but x86_64 does not
work at all.
The behaviors of x86_64 kernels can differ:
sometimes driver can not find partition table:
i2o/hda: unknown partition table
sometimes it find not all partition:
i2o/hda: i2o/hda1 i2o/hda2 i2o/hda3 i2o/hda4 < >
in other cases it detects devices well but corrupt the memory and filesystem:
Sep 21 16:46:09 ts10 block-osm: registered device at major 80
Sep 21 16:46:09 ts10 i2o/hda: i2o/hda1 i2o/hda2 i2o/hda3 i2o/hda4 < i2o/hda5 >
Sep 21 16:46:09 ts10 block-osm: device added (TID: 207): i2o/hda
Sep 21 16:46:09 ts10 kjournald starting. Commit interval 5 seconds
Sep 21 16:46:09 ts10 EXT3-fs: mounted filesystem with ordered data mode.
Sep 21 16:46:10 ts10 Freeing unused kernel memory: 236k freed
Sep 21 16:46:10 ts10 hotplug[961]: segfault at 0000000000000008 rip
00000032411088cf rsp 00007fff5b189050 error 4
When I enabled CONFIG_I2O_EXT_ADAPTEC_DMA64 -- all the troubles went away.
I've tried to investigate this issue, but I've not found and documentation
described format of Adaptec's private messages.
I would like to ask you, is this behavior specific for my hardware (Adaptec
ASR-2010S I2O Zero Channel)? If not, I believe it makes sense to enable
CONFIG_I2O_EXT_ADAPTEC_DMA64 in Kconfig by default for 64-bit kernels.
Thank you,
Vasily Averin
|
|
|
|
|
|
|
Re: 64bit DMA in i2o_block [message #7121 is a reply to message #6768] |
Wed, 04 October 2006 09:42 |
vaverin
Messages: 708 Registered: September 2005
|
Senior Member |
|
|
Markus,
Thank you very much for your help!
Vasily Averin
Markus Lidel wrote:
> Hello,
>
> OK, i'm done now. I've tested all i thought it could cause the failure.
> But unfortunately without success. So i'll submit an patch which set the
> 64-bit DMA as default.
>
> Thank you very much again for your help!
>
>
>
> Best regards,
>
>
> Markus Lidel
> ------------------------------------------
> Markus Lidel (Senior IT Consultant)
>
> Shadow Connect GmbH
> Carl-Reisch-Weg 12
> D-86381 Krumbach
> Germany
>
> Phone: +49 82 82/99 51-0
> Fax: +49 82 82/99 51-11
>
> E-Mail: Markus.Lidel@shadowconnect.com
> URL: http://www.shadowconnect.com
|
|
|