[openib-general] Re: mthca and LinuxBIOS

[yhlu]

i enable CCONFIG_INFINIBAND_MTHCA_DEBUG=y

I didn't get any more debug info, is that depend other setting?

YH

On 8/4/05, yhlu <yhlu.kernel at gmail.com> wrote:
> The mellanox can use prefmem64, but the BIOS could only allocate the
> some range below 4G, So 32 bit OS still can use the IB cards.
> but for 64bit OS, We could allocate range above 4G (0xfc00000000), So
> the mmio below 4G can be smaller. ( for example from 512M to 128M, the
> user can get back some RAM back if Opteron don't have hardware memhole
> support).
> 
> YH
> 
> 
> 
> On 8/4/05, Roland Dreier <rolandd at cisco.com> wrote:
> > >>>>> "yhlu" == yhlu  <yhlu.kernel at gmail.com> writes:
> >
> >     yhlu> YES.  I will send you the output message later about
> >     yhlu> "CONFIG_INFINIBAND_MTHCA_DEBUG=y"
> >
> > Thanks.  In the meantime, can you explain what it means to "enable the
> > prefmem64 to use real 64 range"?  What is the difference between this
> > and the configuration that works?
> >
> >  - R.
> >
>