Re: Adaptec 2010S i2o + x86_64 doesn't work

[Markus Lidel <Markus.Lidel@shadowconnect.com>]

Hello,

Alan Cox wrote:
> On Gwe, 2005-04-15 at 17:15, Miquel van Smoorenburg wrote:
>>However, I removed 2 GB from the box as Alan sugggested and now the box
>>comes up just fine with a 64-bit 2.6.11.6 kernel! I've put the 4GB back,
>>and booted with the kernel "mem=2048" command line option - that also
>>works, the i2o_block driver sees the adaptec controller just fine.
>>And I just booted it with "mem=3840M" and that works too.
>>So the problem appears to be 4 GB memory in 64 bit mode, on this box.

OK, i never tried it with 4 GB so it really could be a problem...

> Or the driver is incorrectly handling 64/32bit DMA limit masks which
> would be my first guess here, and would explain why it works on AMD
> Athlon64 boxes.

Hmmm, i only set DMA_32BIT_MASK and don't do anything special on 64-bit 
systems... Is there anything else to do for correct DMA mapping?

Best regards,


Markus Lidel
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Markus Lidel (Senior IT Consultant)

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