On Fri, 15 Jun 2018, Ricardo Neri wrote:
> On Fri, Jun 15, 2018 at 12:29:06PM +0200, Thomas Gleixner wrote:
> > You have to consider two cases:
> >
> > 1) !remapped mode:
> >
> > That's reasonably simple because you just have to deal with the HPET
> > TIMERn_PROCMSG_ROUT register. But
On Fri, Jun 15, 2018 at 12:29:06PM +0200, Thomas Gleixner wrote:
> On Thu, 14 Jun 2018, Ricardo Neri wrote:
> > On Wed, Jun 13, 2018 at 11:48:09AM +0200, Thomas Gleixner wrote:
> > > On Tue, 12 Jun 2018, Ricardo Neri wrote:
> > > > + /* There are no CPUs to monitor. */
> > > > + if
On Thu, 14 Jun 2018, Ricardo Neri wrote:
> On Wed, Jun 13, 2018 at 11:48:09AM +0200, Thomas Gleixner wrote:
> > On Tue, 12 Jun 2018, Ricardo Neri wrote:
> > > + /* There are no CPUs to monitor. */
> > > + if (!cpumask_weight(>monitored_mask))
> > > + return NMI_HANDLED;
> > > +
> > >
On Wed, Jun 13, 2018 at 11:48:09AM +0200, Thomas Gleixner wrote:
> On Tue, 12 Jun 2018, Ricardo Neri wrote:
> > + /* There are no CPUs to monitor. */
> > + if (!cpumask_weight(>monitored_mask))
> > + return NMI_HANDLED;
> > +
> > inspect_for_hardlockups(regs);
> >
> > + /*
>
On Tue, 12 Jun 2018, Ricardo Neri wrote:
> + /* There are no CPUs to monitor. */
> + if (!cpumask_weight(>monitored_mask))
> + return NMI_HANDLED;
> +
> inspect_for_hardlockups(regs);
>
> + /*
> + * Target a new CPU. Keep trying until we find a monitored CPU.
In order to detect hardlockups in all the monitored CPUs, move the
interrupt to the next monitored CPU when handling the NMI interrupt; wrap
around when reaching the highest CPU in the mask. This rotation is achieved
by setting the affinity mask to only contain the next CPU to monitor.
In order
