diff options
Diffstat (limited to 'xen/include/public/hvm/params.h')
| -rw-r--r-- | xen/include/public/hvm/params.h | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/xen/include/public/hvm/params.h b/xen/include/public/hvm/params.h index 9fa80d39e7..486499816d 100644 --- a/xen/include/public/hvm/params.h +++ b/xen/include/public/hvm/params.h @@ -67,13 +67,19 @@ * As above, missed interrupts are delivered, but guest time always tracks * wallclock (i.e., real) time while doing so. * no_missed_ticks_pending: - * No more than one missed interrupt is held pending, and guest time always - * tracks wallclock (i.e., real) time. + * No missed interrupts are held pending. Instead, to ensure ticks are + * delivered at some non-zero rate, if we detect missed ticks then the + * internal tick alarm is not disabled if the VCPU is preempted during the + * next tick period. + * one_missed_tick_pending: + * Missed interrupts are collapsed together and delivered as one 'late tick'. + * Guest time always tracks wallclock (i.e., real) time. */ #define HVM_PARAM_TIMER_MODE 10 #define HVMPTM_delay_for_missed_ticks 0 #define HVMPTM_no_delay_for_missed_ticks 1 -#define HVMPTM_no_missed_tick_accounting 2 +#define HVMPTM_no_missed_ticks_pending 2 +#define HVMPTM_one_missed_tick_pending 3 #define HVM_NR_PARAMS 11 |