Re: mthca and LinuxBIOS

yhlu
2005-08-04T18:01:58Z

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@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@cisco.com> wrote:
> > >>>>> "yhlu" == yhlu <yhlu.kernel@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.
> >
>