Hi Mark, On Mon, 2014-09-15 at 20:06 +0100, Mark Rutland wrote: > Hi Geoff, > > On Tue, Sep 09, 2014 at 11:49:05PM +0100, Geoff Levand wrote: > > The current implementation of ipi_cpu_stop() is just a tight infinite loop > > around cpu_relax(). This infinite loop implementation is OK if the machine > > will soon do a poweroff, but it doesn't have any mechanism to allow a CPU > > to be brought back on-line, nor is it compatible with kexec re-boot. > > I don't see why we should use this when we have disable_nonboot_cpus. I decided to use disable_nonboot_cpus, so this patch is no longer needed. I'll put the rework of disable_nonboot_cpus to not depend on CONFIG_PM_SLEEP_SMP on my todo list. -Geoff
