Re: [PATCH 2/2] x86: Allow disabling of sys_iopl, sys_ioperm

Mike Waychison
2011-07-14T22:40:28Z

On Thu, Jul 14, 2011 at 3:35 PM, H. Peter Anvin <hpa@zytor.com> 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 checkpatch.pl 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

?