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

Chris Lalancette clalance at redhat.com
Wed Jun 6 17:28:10 UTC 2007

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?

Yes and no.  The problem is that F7 kernel side is based on 3.0.4, while the
hypervisor and the userland tools are based on 3.1.  Without the kernel being
updated to 3.1, 32 pv on 64 HV won't work.  Luckily, that kernel is forthcoming
for F7.

Chris Lalancette

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