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    SubjectRe: NUMA-Q sys_ioperm()/sys_iopl()
    On Wed, Apr 30, 2003 at 05:28:25AM -0700, William Lee Irwin III wrote:
    > NUMA-Q cannot support these operations without significant
    > infrastructure to emulate a global port io space for userspace to
    > manipulate, possibly even with hooks into the scheduler.
    >
    > Not only are the applications depending on this particular form of
    > privilege elevation generally inappropriate uses of these machines
    > (they are large "server-class" machines, typically shipped and run
    > headless), but the devices typically managed with these interfaces
    > are already explicitly unsupported in UNIX configurations.
    >
    > This patch removes sys_iopl() and sys_ioperm() support conditional on
    > #ifdef CONFIG_X86_NUMAQ to prevent the device register corruption
    > condition without significant impact on core i386 support.

    Please use cond_syscall to autogenerate the stubs, and make the compilation
    of /ioport.c conditional on !CONFIG_X86_NUMAQ.
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