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xen-users
Re: [Xen-users] simple question - amd64 dom0, and PVM i486 domU ?
Fajar A. Nugraha wrote:
rabbtux rabbtux wrote:
I've been looking for a solution that doesn't involve dual booting, or
chrooting things to get my x86 domU to work. I have a Debian xen
server on an amd64 platform. It would seem that I should be able to
also install or force the install of a non-xen i486 kernel.
Is there such a thing as i486?
Sorry about that. It seems that Debian DOES have i486 kernel. My mistake.
Once I have both kernels installed in dom0, can't I just
boot the server off the xen-amd64 kernel, and build a para-virtualized
debian domU, referencing the i486 kernel in /boot ?
I'm not familiar with Debian Etch, but assuming that you want to
create a NEW PV-i386 domU on amd64 dom0, you'll going to need Xen >=
3.1 (go with 3.2.1, if possible), which supports 32bit PV domU on
64bit dom0.
In RH-based distros the convention is to put domU's kernel on domU's
storage (not on dom0's boot), so each domU boots from their own /boot
(using pygrub). This way you'll only need amd64-xen kernel on dom0 and
i386-xen kernel on domU.
32-on-64 PV will give best performance and compatibility.
Another option would be to use 64bit_kernel-32bit_userland scenario for
domU. I'v been using this method on Xen 3.0, and works great most of the
time. You might have problems with applications that interracts with
kernel modules (like iptables) though.
It's also possible to use HVM PV. This will allow you to use non-xen
kernels, at the cost of performance penalty and special CPU requirement.
Regards,
Fajar
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