>>> On 23.01.15 at 19:58, <mcgrof@xxxxxxxx> wrote: > On Fri, Jan 23, 2015 at 11:45:06AM +0000, David Vrabel wrote: >> On 23/01/15 00:29, Luis R. Rodriguez wrote: >> > @@ -1243,6 +1247,25 @@ void xen_evtchn_do_upcall(struct pt_regs *regs) >> > set_irq_regs(old_regs); >> > } >> > >> > +/* >> > + * CONFIG_PREEMPT=n kernels can end up triggering the softlock >> > + * TASK_UNINTERRUPTIBLE hanger check (default 120 seconds) >> > + * when certain multicalls are used [0] on large systems, in >> > + * that case we need a way to voluntarily preempt. This is >> > + * only an issue on CONFIG_PREEMPT=n kernels. >> >> Rewrite this comment as; >> >> * Some hypercalls issued by the toolstack can take many 10s of > > Its not just hypercalls though, this is all about the interactions > with multicalls no? multicalls are just a special case of hypercalls. Jan -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
