Messages in this thread | | | Subject | Re: Adaptec 2010S i2o + x86_64 doesn't work | From | Arjan van de Ven <> | Date | Fri, 15 Apr 2005 20:16:11 +0200 |
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On Fri, 2005-04-15 at 20:10 +0200, Markus Lidel wrote: > 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?
are you sure the HW isn't 31 bit by accident ?
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