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    SubjectRe: Merge Xen (the hypervisor) into Linux
    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


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