diff options
Diffstat (limited to 'drivers/ptp')
| -rw-r--r-- | drivers/ptp/Kconfig | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/ptp/Kconfig b/drivers/ptp/Kconfig index 3eac514195af..07bf7f9aae01 100644 --- a/drivers/ptp/Kconfig +++ b/drivers/ptp/Kconfig @@ -135,12 +135,16 @@ config PTP_1588_CLOCK_VMCLOCK tristate "Virtual machine PTP clock" depends on X86_TSC || ARM_ARCH_TIMER depends on PTP_1588_CLOCK && ACPI && ARCH_SUPPORTS_INT128 - default y + default PTP_1588_CLOCK_KVM help This driver adds support for using a virtual precision clock advertised by the hypervisor. This clock is only useful in virtual machines where such a device is present. + Unlike the KVM virtual PTP clock, the VMCLOCK device offers support + for reliable timekeeping even across live migration. So this driver + is enabled by default whenever the KVM PTP clock is. + To compile this driver as a module, choose M here: the module will be called ptp_vmclock. |