CONFIG_PTP_1588_CLOCK_VMCLOCK: Virtual machine PTP clock

General informations

The Linux kernel configuration item CONFIG_PTP_1588_CLOCK_VMCLOCK:

• prompt: Virtual machine PTP clock
• type: tristate
• depends on: ( CONFIG_X86_TSC || CONFIG_ARM_ARCH_TIMER ) && ( CONFIG_PTP_1588_CLOCK && CONFIG_ACPI && CONFIG_ARCH_SUPPORTS_INT128 )
• defined in drivers/ptp/Kconfig
• found in Linux kernels: 6.13–6.14
• modules built: ptp_vmclock

Help text

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.

Hardware

LKDDb

Raw data from LKDDb:

• lkddb acpi "AMZNC10C" : CONFIG_PTP_1588_CLOCK_VMCLOCK : drivers/ptp/ptp_vmclock.c # in 6.13–6.14
• lkddb module ptp_vmclock CONFIG_PTP_1588_CLOCK_VMCLOCK : drivers/ptp/Kconfig : "Virtual machine PTP clock" # in 6.13–6.14
• lkddb platform "vmclock" : CONFIG_PTP_1588_CLOCK_VMCLOCK : drivers/ptp/ptp_vmclock.c # in 6.13–6.14

Sources

This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).

The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

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