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    Subject[PATCH 5.2 22/61] Documentation/admin: Remove the vsyscall=native documentation
    Date
    From: Andy Lutomirski <luto@kernel.org>

    commit d974ffcfb7447db5f29a4b662a3eaf99a4e1109e upstream.

    The vsyscall=native feature is gone -- remove the docs.

    Fixes: 076ca272a14c ("x86/vsyscall/64: Drop "native" vsyscalls")
    Signed-off-by: Andy Lutomirski <luto@kernel.org>
    Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
    Acked-by: Kees Cook <keescook@chromium.org>
    Cc: Florian Weimer <fweimer@redhat.com>
    Cc: Jann Horn <jannh@google.com>
    Cc: stable@vger.kernel.org
    Cc: Borislav Petkov <bp@alien8.de>
    Cc: Kernel Hardening <kernel-hardening@lists.openwall.com>
    Cc: Peter Zijlstra <peterz@infradead.org>
    Link: https://lkml.kernel.org/r/d77c7105eb4c57c1a95a95b6a5b8ba194a18e764.1561610354.git.luto@kernel.org
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    Documentation/admin-guide/kernel-parameters.txt | 6 ------
    1 file changed, 6 deletions(-)

    --- a/Documentation/admin-guide/kernel-parameters.txt
    +++ b/Documentation/admin-guide/kernel-parameters.txt
    @@ -5102,12 +5102,6 @@
    emulate [default] Vsyscalls turn into traps and are
    emulated reasonably safely.

    - native Vsyscalls are native syscall instructions.
    - This is a little bit faster than trapping
    - and makes a few dynamic recompilers work
    - better than they would in emulation mode.
    - It also makes exploits much easier to write.
    -
    none Vsyscalls don't work at all. This makes
    them quite hard to use for exploits but
    might break your system.

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