Re: [Xen-ia64-devel] Please try PV-on-HVM on IPF

[Tristan Gingold <Tristan.Gingold@xxxxxxxx>]

Le Mardi 17 Octobre 2006 15:12, Doi.Tsunehisa@xxxxxxxxxxxxxx a écrit :
>   Hi Tristan,
>
>   Thank you for your comment.
>
> You (Tristan.Gingold) said:
> >> [linux-2.6.16.29 on VT-i domain]
> >> # cat /proc/iomem
> >> 00000000-0009ffff : System RAM
> >> 000a0000-000bffff : reserved
> >> 000c0000-000fffff : reserved
> >> 00100000-03ffffff : System RAM
> >> 04000000-04bf3fff : System RAM
> >>   04000000-046d34bf : Kernel code
> >>   046d34c0-04bf373f : Kernel data
> >> 04bf4000-3c458fff : System RAM
> >>    **** deleted *****
> >> 3ff70000-3fffdfff : System RAM
> >> 3fffe000-3fffffff : reserved
> >> c0000000-c1ffffff : 0000:00:02.0
> >> c2000000-c2ffffff : 0000:00:03.0
> >> c3000000-c3000fff : 0000:00:02.0
> >> e0000000-e033dcf7 : PCI Bus 0000:00 I/O Ports 00000000-00000cf7
> >> e0340d00-e3ffffff : PCI Bus 0000:00 I/O Ports 00000d00-0000ffff
> >>
> >> [RHEL4 U2 on VT-i domain]
> >> # cat /proc/iomem
> >> c0000000-c1ffffff : PCI Bus 0000:00
> >>   c0000000-c1ffffff : 0000:00:02.0
> >> c2000000-c2ffffff : 0000:00:03.0
> >>   c2000000-c2000fff : PCI Bus 0000:00
> >> c3000000-c3000fff : 0000:00:02.0
> >>
> >>   On RHEL4 U2 environment, I could show only this message. It's
> >> strange, and it's the reason that xen-platform-pci.ko module can't
> >> be attached, I think.
> >>
> >>   I don't understand what is happend. Does anyone know the reason ?
> >
> > I do not really understand what is strange for you.
> > The output is not the same but:
> > * it may be due to kernel version
> > * the xen pseudo device appears in both version.
>
>   I think that the diffence are noticed..
>
> >> [linux-2.6.16.29 on VT-i domain]
> >> c2000000-c2ffffff : 0000:00:03.0
> >>
> >> [RHEL4 U2 on VT-i domain]
> >> c2000000-c2ffffff : 0000:00:03.0
> >>   c2000000-c2000fff : PCI Bus 0000:00
OK, it is now clearer.
Sorry I missed it!

>   On RHEL4 U2 kernel (Linux version 2.6.9-22.EL), xen-platform-pci
> includes `PCI Bus 0000:00', but it should be the leaf node, I think.
> To insmod xen-platform-pci, this iomem space was conflicted with
> the inner device, thus it can't be attached.
At least RHEL4 U2 is coherent!
But I do not understand where 'c2000000-c2000fff : PCI Bus 0000:00' comes 
from.  According to your lspci, there is nothing here.  Maybe it was added by 
the ACPI table ?

This is strange indeed :-(

Tristan.


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