Re: Merge Xen (the hypervisor) into Linux

Gerd Hoffmann
2009-06-03T09:11:44Z

On 06/03/09 10:47, Alan Cox wrote:
>> Linux is not the only player here. NetBSD can run as dom0 guest.
>> Solaris can run as dom0 guest too. Thus making the dom0/xen interface
>> private to linux and xen isn't going to fly.
>
> It does not however preclude fixing the dom0 interface.

It wasn't my intention to imply that. The interface can be extended
when needed. PAT support will probably be such a case. Changing it in
incompatible ways isn't going to work though.

> MTRR, PAE etc can all be turned off for the purpose an initial merge.

s/PAE/PAT/? PAE is mandatory ...

Having not-yet supported stuff disabled initially is sensible IMHO. Can
be done for MTRR and PAT. Is already done for MSI ;)

The lapic/ioapic stuff must be sorted though because otherwise you can't
boot the box at all. I think the same is true for the swiotlb bits.

cheers,
Gerd