[Pkg-xen-devel] i386 hypervisor seeing only ~16G RAM, amd64 required?

[Ian Campbell]

On Sun, 2009-01-18 at 15:43 +0000, Andy Smith wrote:
> Hi Ian,
> 
> Thanks for your help.
> 
> On Thu, Jan 15, 2009 at 07:57:51AM +0000, Ian Campbell wrote:
> > Yes, a 64 bit hypervisor can run both 32 and 64 bit guests, including
> > dom0, mixed and matched as you like. I run a 32on64 dom0 all the time.
> > 
> > I think you will need a dom0 kernel more recent than the one in Etch to
> > support guests of a different width to dom0, I'm not sure when exactly
> > this support was added but Lenny's kernel is certainly OK.
> 
> Does this apply even when I intend to run only 32bit guests?  i.e.
> dom0 and all domUs I want to remain as 32bit for now.

No that should be fine, the issue is with 32bit blkback talking to 64bit
blkfront or vice versa (I don't think the netfront/back drivers have the
same issue but don't quote me on that)

> Also are there any issues with pygrub?

Not to my knowledge.

> In any case, as Bastian advises, it looks like I will use the Lenny
> kernel.

Yes, good idea.

Ian.
-- 
Ian Campbell

"The National Association of Theater Concessionaires reported that in
1986, 60% of all candy sold in movie theaters was sold to Roger Ebert."
		-- D. Letterman
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