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| author | Vivek Thampi <vithampi@vmware.com> | 2020-02-28 06:32:46 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-03-06 02:25:07 +0100 |
| commit | 7d10001e20e46ad6ad95622164686bc2cbfc9802 (patch) | |
| tree | 107641721daeeb7e94e8c5839bbc8566eee6c2c5 /Documentation | |
| parent | Merge tag 'wireless-drivers-next-2020-03-05' of git://git.kernel.org/pub/scm/... (diff) | |
| download | linux-7d10001e20e46ad6ad95622164686bc2cbfc9802.tar.xz linux-7d10001e20e46ad6ad95622164686bc2cbfc9802.zip | |
ptp: add VMware virtual PTP clock driver
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>
Diffstat (limited to 'Documentation')
0 files changed, 0 insertions, 0 deletions