[lkml]   [2003]   [Apr]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    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.
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to
    More majordomo info at
    Please read the FAQ at

     \ /
      Last update: 2005-03-22 13:35    [W:0.028 / U:3.196 seconds]
    ©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site