This patch-set try to support physically hot-plug/unplug a cpu automatically, that is: if you offline a cpu, it will automatically actually remove a cpu, and if you hot-plug a cpu, then it will online this cpu automatically. so, offline is just like eject, but eject attribute seems not available since recent kernel(can't figure out when), with this driver, if allowed, it will trigger a eject cpu process. and for automatically online, it was said there are objections, don't know the reason, so, send this patch-set boldly. of course, this approach is for QEMU 's hotplug cpu emulation only, but not limited, if someone like to explore ec space to implment cpu hot-plug/unplug for real platform please feel free to continue. Li Guang (3) drivers/platform/x86: add cpu physically hotplug driver ec: add ec space notifier cpu_physic_hotplug: register handler for ec space notifier drivers/acpi/ec.c | 32 ++++++++++++++++++++++++++++++++ drivers/platform/x86/Kconfig | 8 ++++ drivers/platform/x86/Makefile | 1 + drivers/platform/x86/cpu_physic_hotplug.c | 90 +++++++++++++++++++++++++++++ include/linux/acpi.h | 2 ++ 5 files changed, 130 insertions(+), 3 deletions(-) create mode 100644 drivers/platform/x86/cpu_physic_hotplug.c -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
