On 07/17/2013 02:45 PM, Toshi Kani wrote: > +CONFIG_ARCH_MEMORY_PROBE is supported on powerpc only. On x86, this config > +option is disabled by default since ACPI notifies a memory hotplug event to > +the kernel, which performs its hotplug operation as the result. Please > +enable this option if you need the "probe" interface on x86. There's no prompt for this and no way to override what you've done here without hacking Kconfig/.config files. It's also completely wrong to say "CONFIG_ARCH_MEMORY_PROBE is supported on powerpc only." It works just fine on x86. In fact, I was just using it today without ACPI being around. I'd really prefer you don't do this. Do you really have random processes on your system poking at random sysfs files and then complaining when things break? -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>