8.10.4. frequency, mode, and present
frequencyattribute is used to set a fixed frequency, and is measured in Hz. This attribute is only relevant when the
nameelement has a value of
tsc. All other timers operate at a fixed frequency (
modedetermines how the time source is exposed to the guest virtual machine. This attribute is only relevant for a name value of
tsc. All other timers are always emulated. Command is as follows:
<timer name='tsc' frequency='NNN' mode='auto|native|emulate|smpsafe'/>. Mode definitions are given in the table.
Table 8.5. mode attribute values
|auto||Native if TSC is unstable, otherwise allow native TSC access.|
|native||Always allow native TSC access.|
|emulate||Always emulate TSC.|
|smpsafe||Always emulate TSC and interlock SMP|
presentis used to override the default set of timers visible to the guest virtual machine..
Table 8.6. present attribute values
|yes||Force this timer to the visible to the guest virtual machine.|
|no||Force this timer to not be visible to the guest virtual machine.|