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    SubjectRe: [PATCH 1/7] KVM: userspace interface
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    Ar Iau, 2006-10-19 am 13:49 -0500, ysgrifennodd Anthony Liguori:
    > ioctls are probably wrong here though. Ideally, you would want to be
    > able to support an SMP guest. This means you need to have two virtual
    > processors executing in kernel space. If you use ioctls, it forces you

    Not really and in fact with qemu you'd want to halt a trap on the second
    virtual CPU until emulation was over if only to get I/O and other
    instruction ordering right. Thats not an argument that only that view
    should be supported of course.

    > If you used a read/write interface, you could poll for any number of
    > processors and handle IO emulation in a single userspace thread (which
    > seems closer to how hardware really works anyway).

    Agreed.

    Alan

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