Re: [Xen-users] 64-Bit Xen?

[Javier Guerra Giraldez <javier@xxxxxxxxxxx>]

On Tuesday 15 May 2007, Petersson, Mats wrote:
> > If you have a 64-Bit host running Xen will the guest's be 64-bit as
> > well?
>
> Depends on several things. But first, lets just quickly recap the modes
> that exist biggest to smallest:

i'd summarise as follows (Dom0 / DomU):

HVM:

64bit / 64bit : ok
64bit / PAE : ok
64bit / 32bit : ok

PAE / 64bit : can't
PAE / PAE : ok
PAE / 32bit : ok

32bit / 64bit : can't
32bit / PAE : can't
32bit / 32bit : ok

PV:

64bit / 64bit : ok
64bit / PAE : ok with Xen 3.1
64bit / 32bit : can't

PAE / 64bit : can't
PAE / PAE : ok
PAE / 32bit : can't

32bit / 64bit : can't
32bit / PAE : can't
32bit / 32bit : ok

or, even shorter: "in HVM, DomU <= Dom0; in PV, DomU == Dom0" (except for 
64bit/PAE in 3.1)


(i'm not so sure about PAE/32bit on PV, doesn't sound soo hard.. but what do i 
know?)

-- 
Javier

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