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    SubjectRe: [PATCH 2/2] x86: Allow disabling of sys_iopl, sys_ioperm
    On Thu, Jul 14, 2011 at 3:35 PM, H. Peter Anvin <> wrote:
    > On 07/14/2011 03:31 PM, Andrew Morton wrote:
    >> sys_iopl() is missing asmlinkage.
    >> It would be far more conventional to use cond_syscall().  Perhaps by
    >> adding a CONFIG_X86 area into kernel/sys_ni.c
    >> fyi, I'm offering special deals on site licenses this month.
    > Again, I don't think this makes sense as a compile-time-only option.

    echo "enabled" > /proc/sys/kernel/iopl_available
    echo "disabled" > /proc/sys/kernel/iopl_available
    echo "locked" > /proc/sys/kernel/iopl_available

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