On Friday, 28 September 2007 15:52, Mark Lord wrote: > > We need to disable all CPUs other than the boot CPU (usually 0) > before attempting to power-off modern SMP machines. > This seems to fix the hang-on-poweroff issue > that one of my SMP boxes exhibits. More testing required. > > Signed-off-by: Mark Lord <[EMAIL PROTECTED]> > --- > > --- linux/kernel/sys.c.orig 2007-09-13 09:49:11.000000000 -0400 > +++ linux/kernel/sys.c 2007-09-28 09:48:54.000000000 -0400 > @@ -32,6 +32,7 @@ > #include <linux/getcpu.h> > #include <linux/task_io_accounting_ops.h> > #include <linux/seccomp.h> > +#include <linux/cpu.h> > > #include <linux/compat.h> > #include <linux/syscalls.h> > @@ -879,6 +880,7 @@ > if (pm_power_off_prepare) > pm_power_off_prepare(); > sysdev_shutdown(); > + disable_nonboot_cpus();
Before sysdev_shutdown(), please. sysdev_shutdown() may touch things that belong to CPU0. > printk(KERN_EMERG "Power down.\n"); > machine_power_off(); > } Greetings, Rafael - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
