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    SubjectRe: [PATCH] Open Firmware device tree virtual filesystem
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    > The kernel doesn't care if one CPU is in OF land while the others
    > are doing other stuff -- well you have to make sure the OF won't
    > try to use a hardware device at the same time as the kernel, true.

    That statement alone hides an absolute can of worms btw ;-)

    > I'm a bit concerned about the 100kB or so of data duplication
    > (on a *quite big* device tree), and the extra code you need
    > (all changes have to be done to both tree copies). Maybe
    > I shouldn't be worried; still, it's obviously not a great
    > idea to *require* any arch to get and keep a full copy of
    > the tree -- it's wasteful and unnecessary.

    Well, big device-trees generally are on big machines with enough memory
    not to care and the only platform I know where the DT can actually
    change over time is IBM pSeries when doing DLPAR, in which case, OF is
    dead, it all happens via magic HV/RTAS calls and the kernel is
    -supposed- to maintain it's own copy and add/remove nodes from it.

    Ben.


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