[Fedora-xen] 32bit PV on 64bit Host

[Daniel P. Berrange]

On Wed, Jun 06, 2007 at 10:14:12AM -0700, Jim Klein wrote:
> 
> It's my understanding that 32bit PV vms would run on 64bit hosts with 
> Xen 3.1. However, this doesn't seem to work. Attempting to use 
> virt-install from 64bit using a 32bit source files (over http) dies 
> almost instantly. Creating the 32bit PV vm on a 32-bit system and 
> copying to 64bit also doesn't work (dies at start before even a hint 
> of starting.) Same when migrating a 32bit to a 64 bit (again, dies
> instantly.) Am I wrong about 32bit on 64bit hosts? 

We weren't too clear in the release notes unfortunately. When we updated to
the Xen 3.1.0 hypervisor & userspace we gained the ability to run 32-bit
guests on 64-bit HV in theory. To make it work in practice we're waiting
on some updates to the kernel Dom0 drivers. Hopefully we'll get these into
an update kernel-xen without too much delay...

Dan.
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