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    SubjectRe: GGI Project Unhappy On Linux
    Date
    Followup to:  <Pine.LNX.3.95.980328101434.19294B-100000@ferret.lmh.ox.ac.uk>
    By author: Matthew Kirkwood <weejock@ferret.lmh.ox.ac.uk>
    In newsgroup: linux.dev.kernel
    > > > A process running at ring 0 can still disable interrupts, DMA into
    > > > kernel memory, etc...
    > >
    > > But the Xserver isn't running in the kernel mode.
    >
    > I may have missed something, but the difference between iopl 3 and "kernel
    > mode" is...?
    >

    Huge. IOPL 3 is just user mode with full access to the hardware, but
    not, for example, to kernel memory.

    -hpa
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