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    SubjectRe: [PATCH 2/2] x86: Allow disabling of sys_iopl, sys_ioperm
    On Thu, 14 Jul 2011 13:34:53 -0700
    Mike Waychison <mikew@google.com> wrote:

    > In some build environments, it is useful to allow disabling of IO
    > accesses to hardware, without having to rely on CAP_SYS_RAWIO (which is

    And others include mmap and the tty driver and the PCI config space
    (various devices can be manipulated via pci config space to do I/O cycles)

    It strikes me that

    a) you can do this with a security module
    b) its rather incomplete

    and as such you don't need kernel hacks to do it because everything you
    want is already there.

    Alan


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