Messages in this thread | | | Date | Wed, 30 Apr 2003 05:57:17 -0700 | From | William Lee Irwin III <> | Subject | Re: NUMA-Q sys_ioperm()/sys_iopl() |
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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.
On Wed, Apr 30, 2003 at 01:55:21PM +0100, Christoph Hellwig wrote: > Please use cond_syscall to autogenerate the stubs, and make the compilation > of /ioport.c conditional on !CONFIG_X86_NUMAQ.
Never heard of it before. Get a hold of me in the obvious way to fill me in.
Thanks.
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