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Re: fun with xen caps
On 25/09/2009 7:15 AM, Michael Litchard wrote:
right now this is what xen caps looks like
xen_caps : xen-3.0-x86_64 xen-3.0-x86_32p
Do I need pae support for a x86 domU when the domO is amd64?
If not, how do I re-compile xen to allow the non-pae x86 xen?
Yes, you do ... and from my understanding, you can't ...
With an amd64 dom0 and a PV guest you will need either an amd64 domU or
an i386-PAE domU. I don't believe these limitations apply to HVM though
but I don't use HVM so don't quote me :) ... the i386-PAE kernel is a
drop-in replacement for the old 1386 kernels.
All distro linux xen kernels tend to be PAE enabled. Actually, this is
why I switched to an amd64 dom0, out-of-the-box functionality with linux.
If you already have a NetBSD PV guest OS that is i386, your best bet
would be to use an i386-PAE kernel and upgrade your userland.
Unfortunately when it comes to PAE and PV guests, it's all or nothing. I
managed to convert all my old i386 guests to amd64 with very little
trouble (vnd->domu, extract sets, replace kernel, etcupdate), so it's
not all bad. HTH :)
Sarton
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