Re: [Xen-devel] Re: Partial workaround for probs with 3ware Controller

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

> Hmmm... an upgrade to 2.6 code would be a non-trivial undertaking. But
> Sven has got the 3ware controller working in vanilla 2.4.26.
> 
> I've updated our bootstrap ACPI code to code from the 2.4.26 tree -- it
> looks like a bunch of additional parsing has been added in so, fingers
> crossed, it may well make a difference. :-)  I also checked APIC,
> IO-APIC, and PCI code but nothing there seems to have changed very
> much. 
> 
> Sven: please pull the latest Xen and give it a go. If it still fails,
> then send the new boot output from a Xen debug build, as you did
> before. 

Another thing that is well worth trying is to disable 'ACPI support'
in your vanilla Linux 2.4.26 build configuration.

If you then look in your build tree's '.config' file you should see
CONFIG_ACPI_BOOT enabled, but no other CONFIG_ACPI options.

This much more accurately reflects the state of ACPI support in
Xen. If you build Linux with that configurations and your 3ware
controller fails to work then it means that we need to pull the ACPI
interpreter into Xen. That might not be too hard, but then
again... :-) 

 -- Keir


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