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7d10001e20
Add a PTP clock driver called ptp_vmw, for guests running on VMware ESXi hypervisor. The driver attaches to a VMware virtual device called "precision clock" that provides a mechanism for querying host system time. Similar to existing virtual PTP clock drivers (e.g. ptp_kvm), ptp_vmw utilizes the kernel's PTP hardware clock API to implement a clock device that can be used as a reference in Chrony for synchronizing guest time with host. The driver is only applicable to x86 guests running in VMware virtual machines with precision clock virtual device present. It uses a VMware specific hypercall mechanism to read time from the device. Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com> Signed-off-by: Vivek Thampi <vithampi@vmware.com> Signed-off-by: David S. Miller <davem@davemloft.net>
17 lines
646 B
Makefile
17 lines
646 B
Makefile
# SPDX-License-Identifier: GPL-2.0
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#
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# Makefile for PTP 1588 clock support.
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#
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ptp-y := ptp_clock.o ptp_chardev.o ptp_sysfs.o
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obj-$(CONFIG_PTP_1588_CLOCK) += ptp.o
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obj-$(CONFIG_PTP_1588_CLOCK_DTE) += ptp_dte.o
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obj-$(CONFIG_PTP_1588_CLOCK_INES) += ptp_ines.o
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obj-$(CONFIG_PTP_1588_CLOCK_PCH) += ptp_pch.o
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obj-$(CONFIG_PTP_1588_CLOCK_KVM) += ptp_kvm.o
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obj-$(CONFIG_PTP_1588_CLOCK_QORIQ) += ptp-qoriq.o
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ptp-qoriq-y += ptp_qoriq.o
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ptp-qoriq-$(CONFIG_DEBUG_FS) += ptp_qoriq_debugfs.o
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obj-$(CONFIG_PTP_1588_CLOCK_IDTCM) += ptp_clockmatrix.o
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obj-$(CONFIG_PTP_1588_CLOCK_IDT82P33) += ptp_idt82p33.o
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obj-$(CONFIG_PTP_1588_CLOCK_VMW) += ptp_vmw.o
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