Lines Matching full:this

4  * This structure provides a vDSO-style clock to VM guests, exposing the
9  * When a guest is live migrated, this affects the clock in two ways.
13  * ±50PPM, or 4 seconds a day). This frequency also varies over time on the
24  * In its most basic mode, this structure provides only an indication to the
25  * guest that live migration has occurred. This allows the guest to know that
28  * can be mapped all the way to userspace. This allows the application to see
33  * In its more advanced mode. this structure can also be used to expose the
35  * host. This means that userspace applications can have accurate time
37  * and wait for NTP to recover. This mode does, of course, rely on the
40  * Note that this must be true UTC, never with smeared leap seconds. If a
42  * smeared clock through this interface would be problematic because it
48  * This structure is offered with the intent that it be adopted into the
67 	uint32_t size;		/* Size of region containing this structure */
83 	 * This field changes to another non-repeating value when the CPU
84 	 * counter is disrupted, for example on live migration. This lets
106 	 * guaranteed that the time calculated according this structure at
128 	 * The time exposed through this device is never smeared. This field
130 	 * the smearing method. However in this case it provides a *hint* to
143 	 * This field is based on the VIRTIO_RTC_LEAP_xxx values as defined