Re: [Xen-devel] Re: Massive problems with 'PCI-DMA: Out of SW-IOMMU space for XXX bytes [..]' with 3Ware controller

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

You have to run old Xen with old tools, and new Xen with new tools. However,
the dom0 kernels should be interchangeable (with the exception that old
64-bit Xen cannot run a 32-bit dom0).

 -- Keir

On 25/11/07 21:08, "Markus Schuster" <ma.schuster@xxxxxx> wrote:

> Keir Fraser wrote:
> 
> Before I start testing, I have some questions:
> 
>> What happens if you run the old kernel (32-bit 2.6.16) on new Xen?
> 
> I could simply exchange the Xen hypervisor on my old system, but
> 1. Will the old xend work with the new hypervisor? I don't want to further
> touch the old (stable) system. An exchange of the hypervisor is not the
> problem, as it's just one file, but the complete Xen userland...
> 2. Will a 32bit xend work with a 64bit hypervisor?
> 
> 
>> What happens if you run a new (2.6.18) 32-bit kernel on new Xen?
> 
> Ok, I'll have to do some compiling before I can say anything on this (I only
> have 64bit packages (Xen and kernel)).
> And I have to install a test-32bit-dom0.
> 
> 
>> Or what about new 2.6.18 kernel on old Xen?
> 
> You mean the 32bit version of 2.6.18? Have to do some compiling...
> 
> Regards, 
> Markus Schuster
> 
> 
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