On Wed, 12 Jun 2013 14:05:06 -0700 akpm@xxxxxxxxxxxxxxxxxxxx wrote: > From: Youquan Song <youquan.song@xxxxxxxxx> > Subject: drivers/base/cpu.c: fix maxcpus boot option > > The maxcpus boot option limits the maximum number of CPUs in the system, > but this option is broken in recent kernels. Though we use maxcpus to > limit CPUs number, the current kernel will register all of the present > CPUs in sysfs. udev will enumerate all registered cpu in sysfs, and it > will bring up the CPU if the CPU is offline. So the maxcpus option is > broken. > > This patch will only register a CPU which is not over the limit of the > maxcpus option in sysfs. So it will keep the maxcpus limitation during > udev enumeration or other bringup of CPUs over the limitation by methods > such as echo 1 > /sys/devices/system/cpu/online erk, no, this one is no good - please drop. -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html