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On Fri, Nov 10, 2006 at 01:13:16AM -0700, Eric W. Biederman wrote: > Russell King <rmk+lkml@arm.linux.org.uk> 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 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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