On 04/04/16 13:32, Anna-Maria Gleixner wrote: > Xen guests do not offline/online CPUs during suspend/resume and > therefore FROZEN notifier transitions are not required. Add this > explanation as a comment in the code to get not confused why > CPU_TASKS_FROZEN masked transitions are not considered. > > Cc: David Vrabel <[email protected]> > Cc: Stefano Stabellini <[email protected]> > Cc: [email protected] > Signed-off-by: Anna-Maria Gleixner <[email protected]> > --- > arch/arm/xen/enlighten.c | 6 ++++++ > arch/x86/xen/enlighten.c | 7 +++++++ > drivers/xen/events/events_fifo.c | 6 ++++++ > 3 files changed, 19 insertions(+) > > --- a/arch/arm/xen/enlighten.c > +++ b/arch/arm/xen/enlighten.c > @@ -213,6 +213,12 @@ static int xen_cpu_notification(struct n > unsigned long action, > void *hcpu) > { > + /* > + * Xen guests do not offline/online CPUs during > + * suspend/resume, thus CPU_TASKS_FROZEN masked transitions > + * are not considered. > + */
This may not be true for arm guests. David
