On Fri, Nov 10, 2006 at 01:13:16AM -0700, Eric W. Biederman wrote:
> Russell King <[email protected]> writes:
> > Let's not forget that on ARM it's used to get the MMIO region which
> > is used for PIO emulation by glibc. Without it, glibc can't detect
> > where this region is.
>
> Is that on all subarches or just some of them?
No idea - I don't have that sort of information. Those which are PCI
based have the potential to use it if some userspace programmer wants
to use the ioperm/inb/outb etc which glibc provides.
I have had the occasional bug report that these functions haven't
worked when we haven't been exporting the right info via sysctl, so
they do seem to get used.
--
Russell King
Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/
maintainer of: 2.6 Serial core
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