On 01/14/2012 08:27 PM, Raghavendra K T wrote: > + > +5. KVM_HC_KICK_CPU > +------------------------ > +value: 5 > +Architecture: x86 > +Purpose: Hypercall used to wakeup a vcpu from HLT state > + > +Usage example : A vcpu of a paravirtualized guest that is busywaiting in > guest > +kernel mode for an event to occur (ex: a spinlock to become available) > +can execute HLT instruction once it has busy-waited for more than a > +threshold time-interval. Execution of HLT instruction would cause > +the hypervisor to put the vcpu to sleep (unless yield_on_hlt=0) until > occurence > +of an appropriate event. Another vcpu of the same guest can wakeup the > sleeping > +vcpu by issuing KVM_HC_KICK_CPU hypercall, specifying APIC ID of the vcpu to > be > +wokenup.
Wait, what happens with yield_on_hlt=0? Will the hypercall work as advertised? > + > +TODO: > +1. more information on input and output needed? > +2. Add more detail to purpose of hypercalls. > -- error compiling committee.c: too many arguments to function _______________________________________________ Virtualization mailing list [email protected] https://lists.linuxfoundation.org/mailman/listinfo/virtualization
