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    SubjectRe: [RFC] fixing the UML failure root cause
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    On Fri, Oct 14, 2011 at 10:17 PM, Andrew Lutomirski <luto@mit.edu> wrote:
    > On Fri, Oct 14, 2011 at 12:53 PM, richard -rw- weinberger
    > <richard.weinberger@gmail.com> wrote:
    >> On Tue, Oct 11, 2011 at 7:24 PM, Andrew Lutomirski <luto@mit.edu> wrote:
    >>> What do you think of this approach?  If it seems good, I'll finish the
    >>> patch and submit it.
    >>>
    >>> With this patch applied, UML appears to work, but it fills the log with
    >>> exploit attempt warnings.  Any ideas on what to do about that?
    >>>
    >>
    >> I can confirm that this patch works.
    >> And I really like vsyscall=emulate because with that UML can trap vsyscalls. :-)
    >
    > Are you sure you don't mean vsyscall=native?  I suspect that UML can't
    > actually trap vsyscalls in emulate mode right now, although that ought
    > to be fixable.
    >

    Doesn't vsyscall_emu_64.S transform any vsyscall into a real syscall?
    So UML can trap it.

    --
    Thanks,
    //richard
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